Business Segment Information Business Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2023
Segment Reporting Information [Line Items]
Revenues	$ 1,395,645	$ 1,215,994	$ 4,022,547	$ 3,573,002
Segment operating income	216,156	190,803	590,895	42,783
Restructuring Charges	6	38	2	127
Goodwill impairment loss	0	0	0	490,565
Amortization of acquired intangible assets	93,850	93,941	286,786	281,727
Business Combination, Acquisition Related Costs	5,722	4,817	24,444	18,493
loss (gain) on fair value contingent consideration adjustments	0	0	0	(3,100)
Impact of TCJA	643	282	652	533
Net loss on divestiture of businesses	0	(838)	0	3,939
Amortization of inventory and property step-up to fair value	6,348	1,608	9,329	5,697
Assets	11,435,155		11,435,155		$ 10,821,839
Property, Plant and Equipment, Net	1,844,484		1,844,484		$ 1,705,512
Life Sciences
Segment Reporting Information [Line Items]
Revenues	146,566	121,273	411,074	379,248
Segment operating income	56,738	45,249	156,863	149,173
Corporate
Segment Reporting Information [Line Items]
Segment operating income	(81,359)	(53,873)	(261,265)	(196,872)
Segment operating income
Segment Reporting Information [Line Items]
Segment operating income	322,725	290,651	912,108	840,764
Healthcare [Member] [Member]
Segment Reporting Information [Line Items]
Revenues	916,227	769,144	2,605,157	2,200,483
Segment operating income	223,898	175,399	626,134	497,233
Dental
Segment Reporting Information [Line Items]
Revenues	97,921	103,563	303,233	317,988
Segment operating income	$ 18,292	$ 20,337	$ 64,847	$ 67,992
Dental | Revenue Benchmark | Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	47.50%	47.20%	44.50%	43.80%
Applied Sterilization Technologies [Member]
Segment Reporting Information [Line Items]
Revenues	$ 234,931	$ 222,014	$ 703,083	$ 675,283
Segment operating income	105,156	103,539	325,529	323,238
Other foreign locations [Member]
Segment Reporting Information [Line Items]
Revenues	350,536	314,645	1,013,494	930,400
UNITED STATES
Segment Reporting Information [Line Items]
Revenues	1,025,458	883,390	2,948,878	2,589,472
UNITED KINGDOM
Segment Reporting Information [Line Items]
Revenues	19,651	17,959	60,175	53,130
Consumable revenues [Member] | Life Sciences
Segment Reporting Information [Line Items]
Revenues	60,072	55,610	181,179	172,587
Consumable revenues [Member] | Healthcare [Member] [Member]
Segment Reporting Information [Line Items]
Revenues	329,435	259,810	915,741	757,892
Sales Revenue, Services, Net [Member] | Life Sciences
Segment Reporting Information [Line Items]
Revenues	41,658	37,082	118,630	107,566
Sales Revenue, Services, Net [Member] | Healthcare [Member] [Member]
Segment Reporting Information [Line Items]
Revenues	319,954	282,108	929,574	823,747
Sales Revenue, Services, Net [Member] | Applied Sterilization Technologies [Member]
Segment Reporting Information [Line Items]
Revenues	229,690	218,335	695,214	660,500
Capital equipment revenues [Member] | Life Sciences
Segment Reporting Information [Line Items]
Revenues	44,836	28,581	111,265	99,095
Capital equipment revenues [Member] | Healthcare [Member] [Member]
Segment Reporting Information [Line Items]
Revenues	266,838	227,226	759,842	618,844
Capital equipment revenues [Member] | Applied Sterilization Technologies [Member]
Segment Reporting Information [Line Items]
Revenues	$ 5,241	$ 3,679	$ 7,869	$ 14,783