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		2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Common Stock Value		0.91	0.90	0.90	0.90	0.90	0.89	0.89	0.89	0.89	0.89	0.88	0.88	0.88	0.87	0.86	0.86	0.86	0.86	0.86	0.86	0.86	0.85	0.85	0.85	0.85	0.84	0.84	0.84	0.84	0.83	0.83	0.83	0.83	0.83	0.83	0.83	0.83	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.81	NA	NA	NA
Weighted Average Number Of Diluted Shares Outstanding		66.84	NA	67.10	68.53	68.51	NA	68.55	69.18	69.57	NA	71.47	71.68	71.48	NA	71.02	70.90	71.71	NA	72.14	70.11	71.49	NA	71.79	71.56	71.12	NA	70.86	70.88	70.32	NA	68.46	69.02	68.80	NA	67.96	67.89	67.53	NA	NA	NA	NA	NA	NA	NA	66.43	NA	66.10	66.03	66.96	NA	74.06	75.53	0.08	NA	79.82	80.46	0.08
Weighted Average Number Of Shares Outstanding Basic		65.56	NA	65.63	67.42	67.23	NA	67.51	68.34	68.75	NA	70.09	70.30	70.15	NA	69.17	69.09	69.84	NA	70.14	70.11	69.84	NA	69.74	69.67	69.22	NA	69.08	69.03	68.58	NA	68.46	68.37	68.16	NA	67.96	67.89	67.53	NA	NA	NA	NA	NA	NA	NA	66.43	NA	66.10	66.03	66.84	NA	73.58	74.88	0.08	NA	78.92	79.35	0.08
Earnings Per Share Basic		0.60	0.27	0.63	0.81	0.51	0.24	0.33	0.38	0.47	0.36	0.40	0.38	0.44	0.39	0.58	0.41	0.42	0.39	0.26	-0.01	0.35	0.20	0.21	0.13	0.25	-0.64	0.04	0.06	0.08	-0.48	-0.01	0.17	0.04	2.10	-0.67	-0.31	-0.37	NA	NA	NA	NA	NA	NA	NA	-0.23	-0.93	-0.50	-1.52	0.78	-1.64	0.14	0.74	0.96	0.15	0.33	0.81	0.67
Earnings Per Share Diluted		0.59	0.26	0.62	0.80	0.50	0.23	0.32	0.37	0.46	0.36	0.39	0.37	0.43	0.38	0.56	0.40	0.41	0.38	0.25	-0.01	0.35	0.20	0.21	0.12	0.25	-0.64	0.04	0.06	0.07	-0.48	-0.01	0.17	0.04	2.08	-0.67	-0.31	-0.37	NA	NA	NA	NA	NA	NA	NA	-0.23	-0.93	-0.50	-1.52	0.78	-1.64	0.14	0.73	0.95	0.15	0.33	0.80	0.66

		2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Revenue From Contract With Customer Excluding Assessed Tax		168.26	147.92	179.92	186.56	195.60	176.15	168.42	167.68	182.96	159.86	174.00	175.54	183.64	171.16	169.13	176.03	170.99	158.45	154.96	156.44	157.85	145.50	145.69	142.04	148.06	143.12	144.99	146.22	162.11	155.25	167.62	182.63	198.89	199.95	162.07	174.78	182.30	174.21	227.45	229.29	243.10	247.09	251.31	294.85	340.48	354.69	332.76	368.97	434.14	439.52	431.31	497.19	543.36	531.57	524.14	527.74	529.43
Revenues		168.26	147.92	179.92	186.56	195.60	176.15	168.42	167.68	182.96	159.86	174.00	175.54	183.64	171.16	169.13	176.03	170.99	158.45	154.96	156.44	157.85	145.50	145.69	142.04	148.06	143.12	144.99	146.22	162.11	155.25	167.62	182.63	198.89	199.95	162.07	174.78	182.30	174.21	227.45	229.29	243.10	247.09	251.31	294.85	340.48	354.69	332.76	368.97	434.14	439.52	431.31	497.19	543.36	531.57	524.14	527.74	529.43
Operating Expenses		121.99	131.98	136.85	138.47	152.26	153.47	139.10	133.74	139.27	125.28	136.14	139.58	143.02	134.97	137.05	138.67	133.69	126.44	130.66	156.26	127.88	125.32	126.41	130.73	127.54	132.41	140.45	137.12	152.33	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
General And Administrative Expense		87.48	92.76	92.05	100.59	112.69	114.61	103.88	101.33	106.30	95.04	106.29	107.13	110.05	102.35	105.50	105.84	103.53	99.10	103.06	128.67	99.32	97.52	96.84	98.34	98.01	100.81	99.08	96.84	108.25	140.37	111.72	102.07	123.56	190.99	112.70	121.36	139.15	12.75	161.90	160.87	189.78	183.05	191.30	214.17	206.42	226.57	227.37	225.62	214.63	228.58	237.48	229.80	240.86	266.07	308.39	256.92	264.14
Operating Income Loss		46.28	15.94	43.07	48.09	43.34	22.67	29.32	33.95	43.69	34.58	37.86	35.96	40.62	36.19	32.07	37.37	37.30	32.01	24.29	0.18	29.97	20.18	19.28	11.30	20.53	10.71	4.54	9.10	9.78	-55.91	-0.71	17.29	6.98	-3.93	-10.79	-9.33	-24.60	-7.78	-44.87	-33.34	-47.87	-59.02	-68.65	-63.53	-18.10	-77.22	-48.25	-108.10	46.63	-168.91	15.79	82.68	113.23	18.17	39.51	96.75	89.45
Interest Expense		0.34	0.12	0.10	0.10	0.10	0.10	0.10	0.10	0.10	-0.04	0.57	0.28	0.11	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.36	0.11	0.11	0.11	0.11	0.11	0.11	0.11	0.12	0.12	0.12	0.24	0.33	0.17	0.17	0.16	0.20	0.10	0.11	0.08	0.23	0.21	0.21	0.71	0.18	0.02	0.03	0.04	0.47	0.04	0.02	0.03	0.30	0.03	0.03	0.01
Allocated Share Based Compensation Expense		2.30	1.42	2.33	2.02	2.29	2.51	1.91	1.90	2.41	3.69	3.85	3.67	3.75	3.64	3.23	3.29	2.97	5.87	1.85	1.48	2.36	1.67	1.88	1.69	2.56	2.15	2.65	2.49	1.80	3.17	2.22	1.93	1.47	0.84	1.44	0.62	1.85	2.55	1.75	NA	3.59	3.98	2.21	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Income Loss From Continuing Operations Before Income Taxes Domestic		52.85	22.38	48.09	74.60	47.05	24.43	31.29	34.72	43.83	34.78	37.33	35.97	41.01	36.88	32.76	38.46	38.74	33.60	26.05	1.78	31.59	21.01	20.16	11.80	21.38	11.35	5.09	9.71	10.10	-55.36	-0.48	17.24	7.22	-4.29	-44.66	-20.75	-24.74	44.20	-44.79	-33.75	-47.23	-97.86	-55.05	-59.09	-34.10	-89.62	-39.61	-104.28	34.61	-181.89	25.75	78.24	101.46	NA	NA	NA	NA
Income Tax Expense Benefit		13.41	5.19	6.78	19.93	12.57	8.47	9.22	8.95	11.76	10.31	9.56	9.32	10.24	9.81	-7.21	10.27	9.60	6.07	7.65	2.30	6.41	7.03	5.09	2.94	3.50	55.98	1.60	5.04	4.50	-25.33	0.02	4.62	4.13	-146.53	0.04	-0.75	-0.21	0.55	1.12	1.85	0.22	50.47	-25.33	-33.27	-11.24	-16.70	-16.68	-13.87	0.43	-27.65	4.71	27.23	41.86	5.75	12.57	29.71	32.26
Profit Loss		39.44	17.19	41.31	54.67	34.48	15.96	22.07	25.77	32.08	24.47	27.77	26.65	30.75	27.05	39.94	28.17	29.11	27.52	18.23	-0.56	24.79	14.07	14.86	8.75	17.50	-44.38	3.02	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Other Comprehensive Income Loss Net Of Tax		-0.95	4.33	0.62	-1.50	1.33	0.87	-3.14	-1.63	-1.45	-0.09	-0.02	0.01	-0.35	-0.24	-0.34	1.48	-0.89	-0.04	-0.07	0.41	0.35	-0.03	0.09	-0.06	-0.13	-0.31	0.10	0.23	0.06	-0.34	0.42	0.03	0.52	-0.26	0.08	-0.04	0.20	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Net Income Loss		39.44	17.19	41.31	54.67	34.48	15.96	22.07	25.77	32.08	24.47	27.77	26.65	30.75	27.05	39.94	28.17	29.11	27.52	18.23	-0.56	24.79	14.07	14.86	8.75	17.50	-44.38	3.02	4.29	5.18	-32.88	-0.69	11.84	3.01	142.72	-45.23	-20.72	-24.88	-25.49	-47.97	-46.56	-58.14	-30.61	-87.06	-31.39	-15.20	-61.49	-33.15	-100.23	52.08	-120.45	10.63	55.35	73.03	12.10	26.13	64.32	55.22
Comprehensive Income Net Of Tax		38.49	21.52	41.93	53.17	35.81	16.82	18.92	24.13	30.63	24.37	27.75	26.66	30.40	26.81	39.60	29.65	28.22	27.47	18.16	-0.15	25.14	14.04	14.94	8.69	17.37	-44.69	3.13	4.52	5.24	-33.22	-0.27	11.87	3.53	142.46	-45.15	-20.77	-24.69	-25.59	-48.08	-46.67	-58.17	-33.91	-80.55	-28.57	-16.95	-57.26	-32.61	-110.08	57.50	-125.28	-1.13	58.56	81.36	9.66	39.22	53.09	NA

		2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Assets		1051.96	1007.32	1026.03	1013.67	963.01	957.37	899.20	856.06	843.83	847.43	836.42	786.42	750.37	721.52	683.75	655.10	606.53	599.15	598.81	561.80	530.16	482.49	461.35	458.79	457.34	447.10	501.20	506.48	509.73	559.60	551.47	552.79	550.24	610.91	448.88	490.38	529.63	573.53	624.04	667.48	741.50	805.04	985.18	994.19	994.62	1122.70	1145.03	1139.09	1279.26	1316.12	1532.34	1488.68	1499.20	1560.86	NA	NA	NA
Liabilities And Stockholders Equity		1051.96	1007.32	1026.03	1013.67	963.01	957.37	899.20	856.06	843.83	847.43	836.42	786.42	750.37	721.52	683.75	655.10	606.53	599.15	598.81	561.80	530.16	482.49	461.35	458.79	457.34	447.10	501.20	506.48	509.73	559.60	551.47	552.79	550.24	610.91	448.88	490.38	529.63	573.53	624.04	667.48	741.50	805.04	985.18	994.19	994.62	1122.70	1145.03	1139.09	1279.26	1316.12	1532.34	1488.68	1499.20	1560.86	NA	NA	NA
Stockholders Equity		866.11	841.42	829.66	792.43	761.17	725.85	706.22	692.76	678.38	650.11	645.38	613.61	588.35	555.91	521.67	478.68	445.14	431.30	401.94	381.25	380.32	355.20	339.65	322.92	312.97	296.20	339.39	334.95	327.06	321.50	355.02	354.16	341.41	337.61	194.44	238.47	257.95	281.93	305.68	352.63	398.13	455.38	491.13	569.74	596.47	611.79	671.66	702.33	809.08	805.98	946.85	950.93	926.19	934.38	NA	NA	NA

		2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Assets Current		706.02	654.96	669.59	643.39	585.45	575.12	582.32	571.79	556.20	554.45	537.14	549.14	506.05	467.06	416.85	394.06	332.29	360.38	353.02	320.94	282.18	269.45	240.11	230.69	225.39	210.72	209.11	209.73	205.79	248.19	259.77	249.71	233.48	288.96	278.39	315.93	347.51	380.80	336.30	355.04	400.65	460.02	557.20	458.01	436.90	543.56	544.97	531.24	580.98	610.48	615.08	558.88	571.30	619.36	NA	NA	NA
Cash And Cash Equivalents At Carrying Value		125.81	118.01	165.64	140.53	89.84	109.41	147.12	148.75	190.44	319.98	266.40	87.34	86.03	105.68	58.12	91.54	37.93	108.69	47.41	51.10	38.80	32.39	32.03	33.17	24.20	18.11	16.28	38.90	13.27	49.51	55.66	49.66	47.54	66.92	68.94	63.27	69.24	93.83	126.93	138.61	264.19	318.94	30.92	165.92	223.82	240.56	242.83	209.31	229.39	280.59	289.10	228.82	239.26	289.48	283.42	150.33	215.78
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents		126.83	119.02	174.12	150.01	99.32	118.88	149.31	149.94	191.65	325.18	271.60	91.34	90.03	109.68	62.12	95.54	41.93	108.69	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Inventory Net		4.25	5.00	2.18	2.88	3.77	1.90	2.04	1.17	1.41	0.90	1.18	0.62	0.59	0.60	0.62	0.57	0.55	0.58	0.67	0.66	0.73	0.76	0.89	0.91	1.01	1.11	0.99	0.88	1.45	1.87	1.83	2.11	2.50	3.35	2.35	2.67	3.07	3.31	5.19	6.04	6.33	6.74	7.15	7.69	7.50	8.57	9.16	10.00	9.83	11.36	10.69	11.09	11.50	13.14	NA	NA	NA
Other Assets Current		0.20	0.15	0.26	0.66	0.73	0.60	0.52	2.74	2.70	2.51	2.52	2.64	0.25	0.34	0.42	0.79	1.62	1.94	1.64	0.36	0.63	0.44	1.12	1.61	0.83	1.32	1.11	0.79	1.03	0.82	0.95	1.54	2.33	2.52	1.56	1.85	1.98	2.38	4.72	3.88	4.49	3.47	5.88	7.25	6.84	4.42	5.21	6.18	16.20	17.77	21.52	24.66	21.91	6.25	NA	NA	NA
Available For Sale Securities Debt Securities		NA	485.13	NA	NA	NA	399.31	NA	NA	NA	174.21	NA	NA	NA	300.68	NA	NA	NA	185.49	NA	NA	NA	196.43	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	71.26	NA	NA	NA	171.02	NA	NA	NA	170.98	NA	NA	NA

		2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Property Plant And Equipment Gross		NA	80.16	NA	NA	NA	80.28	NA	NA	NA	142.07	NA	NA	NA	129.14	NA	NA	NA	118.94	NA	NA	NA	228.10	NA	NA	NA	247.06	NA	NA	NA	421.93	NA	NA	NA	507.17	NA	NA	NA	399.48	NA	NA	NA	681.57	NA	NA	NA	776.02	NA	NA	NA	778.41	NA	NA	NA	809.23	NA	NA	NA
Furniture And Fixtures Gross		NA	10.87	NA	NA	NA	11.42	NA	NA	NA	23.63	NA	NA	NA	23.07	NA	NA	NA	23.14	NA	NA	NA	37.36	NA	NA	NA	40.46	NA	NA	NA	59.64	NA	NA	NA	88.78	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	98.76	NA	NA	NA	109.80	NA	NA	NA
Leasehold Improvements Gross		NA	16.45	NA	NA	NA	19.82	NA	NA	NA	60.52	NA	NA	NA	56.09	NA	NA	NA	58.29	NA	NA	NA	73.95	NA	NA	NA	90.49	NA	NA	NA	228.55	NA	NA	NA	264.28	NA	NA	NA	174.03	NA	NA	NA	370.77	NA	NA	NA	388.08	NA	NA	NA	414.72	NA	NA	NA	387.61	NA	NA	NA
Construction In Progress Gross		NA	1.81	NA	NA	NA	4.15	NA	NA	NA	3.19	NA	NA	NA	0.82	NA	NA	NA	1.13	NA	NA	NA	1.95	NA	NA	NA	0.30	NA	NA	NA	0.07	NA	NA	NA	2.20	NA	NA	NA	0.37	NA	NA	NA	1.03	NA	NA	NA	3.56	NA	NA	NA	4.76	NA	NA	NA	10.96	NA	NA	NA
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment		60.69	58.78	61.23	59.22	56.70	54.24	119.18	116.23	116.93	113.71	110.65	107.63	104.55	101.38	101.79	98.63	95.59	92.93	197.07	194.79	192.61	198.05	195.65	196.49	213.06	213.82	346.72	368.93	376.89	381.42	NA	NA	NA	448.92	NA	NA	NA	326.40	NA	NA	NA	499.18	NA	NA	NA	498.45	NA	NA	NA	428.63	NA	NA	NA	445.72	NA	NA	NA
Property Plant And Equipment Net		20.94	21.37	23.53	24.26	25.75	26.04	26.29	26.95	27.96	28.36	25.84	24.81	25.70	27.76	28.81	28.34	28.35	26.01	26.70	27.51	28.40	30.05	29.98	30.83	32.03	33.23	33.28	35.43	37.47	40.51	45.21	48.57	52.60	58.25	54.68	57.95	65.08	73.08	138.25	159.09	170.57	182.40	202.12	246.01	259.12	277.57	317.48	327.26	341.81	349.79	360.80	364.76	359.68	366.77	NA	NA	NA
Goodwill		241.16	241.16	241.16	244.11	243.94	243.54	184.13	162.58	162.58	162.58	162.69	118.31	118.31	118.31	118.31	118.31	118.78	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	87.36	132.39	131.72	133.03	131.86	130.88	213.86	212.63	381.32	385.32	384.40	381.48	NA	NA	NA
Indefinite Lived Intangible Assets Excluding Goodwill		NA	7.90	NA	NA	NA	7.90	NA	NA	NA	7.90	NA	NA	NA	7.90	NA	NA	NA	7.90	NA	NA	NA	7.90	NA	NA	NA	7.90	NA	NA	NA	7.90	NA	NA	NA	7.90	NA	NA	NA	9.60	NA	NA	NA	39.53	NA	NA	NA	58.92	NA	NA	NA	71.96	NA	NA	NA	NA	NA	NA	NA
Intangible Assets Net Excluding Goodwill		35.11	36.22	39.97	49.09	50.94	53.56	44.26	28.88	30.54	32.21	34.11	13.86	14.69	15.52	16.36	17.19	18.30	7.90	7.90	7.90	7.90	7.90	7.90	7.90	7.90	7.90	7.90	8.10	8.30	8.50	8.70	8.90	9.10	9.30	7.90	7.90	8.06	9.82	29.06	32.25	39.85	40.12	40.39	56.90	61.13	61.68	74.03	74.63	76.67	77.19	108.66	112.73	118.50	118.76	NA	NA	NA
Finite Lived Intangible Assets Net		NA	28.32	NA	NA	NA	45.66	NA	NA	NA	24.31	NA	NA	NA	7.62	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0.60	NA	NA	NA	1.40	NA	NA	NA	0.22	NA	NA	NA	0.58	NA	NA	NA	2.76	NA	NA	NA	5.22	NA	NA	NA	9.09	NA	NA	NA
Other Assets Noncurrent		6.85	6.84	5.22	6.89	6.88	6.49	6.54	6.45	6.57	6.69	6.08	6.23	6.31	6.43	5.93	5.83	5.88	5.64	5.14	4.95	4.93	4.99	5.28	6.65	5.92	5.67	7.02	7.56	7.41	7.61	8.33	16.04	17.55	16.56	16.90	17.51	17.70	18.57	17.17	17.43	26.26	18.11	25.92	28.15	32.32	33.33	42.29	40.24	30.69	30.12	32.27	32.00	32.48	37.82	NA	NA	NA

		2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Liabilities Current		142.51	111.04	139.24	160.69	135.14	163.38	140.40	110.20	110.35	140.24	134.41	117.77	103.22	103.81	98.50	110.43	92.29	103.81	132.14	128.48	92.62	97.05	91.62	105.91	114.09	112.69	120.02	121.01	123.16	169.21	130.79	129.35	135.00	192.81	187.09	177.00	193.39	201.18	193.65	184.34	205.45	207.43	355.90	278.86	246.66	352.71	310.76	270.17	293.29	329.44	413.71	361.51	391.42	464.07	NA	NA	NA
Accounts Payable Current		11.83	10.77	14.54	15.36	15.18	13.52	13.29	12.42	12.13	10.84	12.65	11.53	10.77	13.26	12.86	11.91	9.62	11.53	11.04	12.38	13.07	9.20	12.65	11.30	11.69	8.52	11.78	10.41	13.27	10.10	16.00	13.83	18.58	25.91	28.29	17.64	28.68	21.97	29.66	25.50	29.64	24.65	33.72	31.86	42.60	38.44	53.24	38.38	34.17	48.41	47.57	47.40	41.47	56.01	NA	NA	NA
Other Accrued Liabilities Current		21.11	13.50	20.75	23.01	19.03	14.62	14.81	14.50	12.15	15.18	17.60	18.61	12.29	11.92	11.10	18.66	15.74	16.38	46.61	39.50	10.28	19.67	16.22	33.83	32.67	31.23	35.13	32.92	36.66	69.24	25.60	24.70	21.97	24.08	22.30	17.88	19.36	21.44	26.72	28.20	51.04	43.27	61.38	83.48	41.17	44.65	48.54	50.56	55.74	61.54	53.19	48.10	52.56	98.11	NA	NA	NA
Accrued Income Taxes Current		16.54	3.97	12.61	16.04	20.08	7.81	8.08	8.00	10.98	0.21	3.56	1.52	6.63	1.40	2.38	1.92	1.49	1.38	1.68	1.14	1.30	1.47	2.06	1.76	1.73	2.19	1.90	2.10	2.31	1.83	1.73	1.60	5.15	1.06	1.72	1.54	1.58	1.63	1.51	2.22	0.60	14.99	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	8.07	NA	NA	NA
Contract With Customer Liability Current		61.50	37.22	38.70	66.91	44.71	71.59	61.98	35.57	39.11	70.61	57.05	45.21	37.00	34.53	29.30	38.54	29.00	24.65	23.78	28.66	24.29	32.35	22.99	23.05	NA	22.90	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Liabilities Noncurrent		43.35	54.86	57.13	60.54	66.70	68.14	52.58	53.10	55.10	57.08	56.62	55.03	58.80	61.80	63.59	65.98	69.09	64.04	64.72	52.07	57.21	30.24	30.09	29.96	30.28	38.20	41.79	50.51	59.51	68.89	65.66	69.28	73.83	80.50	67.36	74.91	78.29	90.42	124.70	130.51	137.92	142.23	138.15	145.59	151.50	158.20	162.50	166.49	176.79	180.59	171.67	176.11	181.44	162.25	NA	NA	NA
Other Liabilities Noncurrent		26.65	33.51	34.26	36.19	40.86	40.86	22.19	21.11	21.34	21.53	18.89	14.47	18.38	18.39	17.31	17.31	17.39	11.65	9.82	9.85	9.88	17.49	15.88	15.14	15.76	22.14	23.38	23.42	27.54	31.75	24.13	23.19	22.51	25.20	19.76	20.04	16.66	19.18	25.70	25.18	27.59	30.80	29.79	29.33	30.06	29.93	35.89	36.85	39.95	40.37	38.65	39.71	40.57	11.76	NA	NA	NA
Operating Lease Liability Noncurrent		16.70	21.35	22.87	24.36	25.84	27.29	30.39	31.99	33.76	35.55	37.73	40.56	40.42	43.41	46.27	48.67	51.70	52.39	54.90	42.22	47.33	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Stockholders Equity		866.11	841.42	829.66	792.43	761.17	725.85	706.22	692.76	678.38	650.11	645.38	613.61	588.35	555.91	521.67	478.68	445.14	431.30	401.94	381.25	380.32	355.20	339.65	322.92	312.97	296.20	339.39	334.95	327.06	321.50	355.02	354.16	341.41	337.61	194.44	238.47	257.95	281.93	305.68	352.63	398.13	455.38	491.13	569.74	596.47	611.79	671.66	702.33	809.08	805.98	946.85	950.93	926.19	934.38	NA	NA	NA
Common Stock Value		0.91	0.90	0.90	0.90	0.90	0.89	0.89	0.89	0.89	0.89	0.88	0.88	0.88	0.87	0.86	0.86	0.86	0.86	0.86	0.86	0.86	0.85	0.85	0.85	0.85	0.84	0.84	0.84	0.84	0.83	0.83	0.83	0.83	0.83	0.83	0.83	0.83	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.82	0.81	NA	NA	NA
Additional Paid In Capital Common Stock		698.62	694.80	691.58	688.80	686.72	684.18	681.38	679.40	677.31	674.24	670.50	666.47	662.49	658.42	650.99	646.85	642.96	639.34	633.54	630.88	629.77	628.29	626.75	624.87	623.38	621.01	619.48	618.11	614.57	613.33	613.61	612.45	611.47	610.78	610.06	608.93	607.64	606.53	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Retained Earnings Accumulated Deficit		512.62	480.61	470.83	437.00	382.32	347.84	331.88	309.82	284.05	251.97	227.51	199.74	173.09	142.34	115.28	75.34	47.18	18.07	-9.45	-27.68	-27.12	-52.95	-67.02	-81.87	-90.62	-108.13	-63.74	-66.77	-71.05	-76.23	-43.35	-42.67	-54.51	-57.52	-200.24	-155.01	-134.28	-109.40	-84.02	-36.05	10.52	68.66	99.26	186.33	217.72	232.92	294.31	327.46	427.69	375.61	496.06	485.41	430.04	356.99	NA	NA	NA
Accumulated Other Comprehensive Income Loss Net Of Tax		-1.62	-0.67	-5.00	-5.62	-4.12	-5.45	-6.32	-3.17	-1.54	-0.10	-0.00	0.02	0.01	0.36	0.60	0.94	-0.54	0.34	0.39	0.46	0.05	-0.30	-0.27	-0.36	-0.30	-0.16	0.14	0.04	-0.19	-0.26	0.09	-0.33	-0.36	-0.88	-0.62	-0.70	-0.66	-0.85	-0.75	-0.64	-0.53	-0.50	2.80	-3.71	-6.53	-4.79	-9.02	-9.55	0.29	-5.14	-0.31	11.46	8.25	-0.08	NA	NA	NA
Treasury Stock Value		344.42	334.22	328.65	328.65	304.65	301.62	301.62	294.18	282.33	276.89	253.49	253.49	248.12	246.09	246.07	245.31	245.31	227.31	223.39	223.26	223.23	220.70	220.67	220.57	220.34	217.35	217.34	217.27	217.10	216.17	216.16	216.13	216.02	215.61	215.59	215.59	215.58	215.16	215.16	215.16	215.11	214.49	214.49	214.49	214.44	213.99	213.99	213.97	213.94	156.28	142.65	135.44	95.41	0.19	NA	NA	NA
Stock Issued During Period Value New Issues		-1.92	NA	0.44	0.07	-1.96	NA	-0.07	-0.19	0.95	NA	-0.17	-0.31	1.72	NA	-0.71	-0.60	0.27	NA	-1.01	-0.04	2.42	NA	-0.34	-0.06	2.10	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value		2.31	NA	2.34	2.02	2.29	NA	1.92	1.90	2.42	NA	3.86	3.68	3.75	NA	3.23	3.29	3.21	NA	1.52	1.04	1.37	NA	1.45	1.20	1.50	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Net Cash Provided By Used In Operating Activities		54.49	13.19	32.61	61.65	4.57	40.55	52.86	32.62	22.15	46.91	61.46	38.04	44.71	42.20	28.39	60.60	48.77	-12.31	31.98	40.47	12.95	38.69	3.54	3.66	11.10	7.32	5.14	4.81	-39.05	-9.80	9.67	16.66	-10.61	-0.68	5.59	-6.42	-20.18	-17.48	-19.86	-45.87	-35.42	-7.96	-10.87	-52.78	-14.20	-49.29	15.92	-0.78	17.35	21.03	94.67	55.10	59.66	54.74	169.65	-5.60	53.47
Net Cash Provided By Used In Investing Activities		-30.80	-57.31	-0.72	-9.11	-21.36	-71.04	-46.11	-62.68	-146.91	30.01	118.62	-31.66	-62.64	1.58	-61.96	-7.59	-97.94	47.04	-7.02	-28.20	-4.12	-38.37	-5.48	5.26	-2.90	-5.51	-28.38	18.66	3.59	3.50	-3.86	-25.24	-8.75	-3.59	0.27	-0.79	-3.87	-16.73	9.26	-81.20	-18.96	174.32	5.15	-6.51	-6.10	62.79	24.37	-13.08	-15.73	-8.55	-23.68	-28.52	-21.84	-50.14	-39.60	10.37	-30.29
Net Cash Provided By Used In Financing Activities		-15.88	-10.97	-7.79	-1.85	-2.78	0.07	-7.38	-11.65	-8.77	-23.33	0.17	-5.07	-1.72	3.78	0.15	0.60	-17.58	-3.48	1.02	0.04	-2.42	0.04	0.34	0.06	-2.11	0.16	0.02	2.15	-0.79	0.19	0.30	10.49	0.23	2.19	-0.11	1.26	-0.83	1.08	-1.13	1.22	-0.19	0.21	-0.37	-0.43	6.70	-17.64	-5.54	-0.01	-56.50	-13.00	-6.41	-38.17	-89.11	1.74	-0.88	-68.29	-89.44

		2024-03-31	2023-12-31	2023-09-30	2023-06-30	2023-03-31	2022-12-31	2022-09-30	2022-06-30	2022-03-31	2021-12-31	2021-09-30	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2010-03-31
Net Cash Provided By Used In Operating Activities		54.49	13.19	32.61	61.65	4.57	40.55	52.86	32.62	22.15	46.91	61.46	38.04	44.71	42.20	28.39	60.60	48.77	-12.31	31.98	40.47	12.95	38.69	3.54	3.66	11.10	7.32	5.14	4.81	-39.05	-9.80	9.67	16.66	-10.61	-0.68	5.59	-6.42	-20.18	-17.48	-19.86	-45.87	-35.42	-7.96	-10.87	-52.78	-14.20	-49.29	15.92	-0.78	17.35	21.03	94.67	55.10	59.66	54.74	169.65	-5.60	53.47
Net Income Loss		39.44	17.19	41.31	54.67	34.48	15.96	22.07	25.77	32.08	24.47	27.77	26.65	30.75	27.05	39.94	28.17	29.11	27.52	18.23	-0.56	24.79	14.07	14.86	8.75	17.50	-44.38	3.02	4.29	5.18	-32.88	-0.69	11.84	3.01	142.72	-45.23	-20.72	-24.88	-25.49	-47.97	-46.56	-58.14	-30.61	-87.06	-31.39	-15.20	-61.49	-33.15	-100.23	52.08	-120.45	10.63	55.35	73.03	12.10	26.13	64.32	55.22
Profit Loss		39.44	17.19	41.31	54.67	34.48	15.96	22.07	25.77	32.08	24.47	27.77	26.65	30.75	27.05	39.94	28.17	29.11	27.52	18.23	-0.56	24.79	14.07	14.86	8.75	17.50	-44.38	3.02	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
Depreciation Depletion And Amortization		3.02	3.45	3.91	4.37	5.16	4.88	5.07	4.91	4.88	4.96	3.89	3.91	4.00	4.00	4.00	4.15	2.64	2.39	2.28	2.23	2.23	2.35	2.36	2.10	2.58	2.62	3.58	3.88	3.91	5.76	5.21	5.20	6.57	5.08	5.96	7.19	6.71	12.49	13.14	14.39	15.43	16.53	18.38	18.94	19.30	21.26	20.43	20.02	20.11	22.05	22.45	20.51	20.37	19.81	17.84	17.22	16.75
Share Based Compensation		2.31	1.43	2.34	2.02	2.29	2.52	1.92	1.90	2.42	3.69	3.86	3.68	3.75	3.64	3.23	3.29	3.21	5.35	1.52	1.04	1.37	1.47	1.45	1.20	1.50	1.35	1.29	1.22	1.11	0.99	0.86	0.85	0.54	0.40	0.98	0.53	0.94	0.97	0.95	1.02	1.34	1.58	1.71	1.63	1.77	2.38	1.57	2.96	2.78	2.95	3.40	4.29	4.20	2.93	4.36	5.04	5.00