Fair Value Measurements Fair Value Hierarchy (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Mar. 31, 2026
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt and Equity Securities, Gain (Loss)	$ (0.2)	$ (0.1)
Level 1
Assets:
Cash and cash equivalents	482.3		$ 439.6
Forward and swap contracts	0.0		0.0
Equity Securities, FV-NI	2.7		3.2
Investments	1.5		1.3
Liabilities:
Foreign Currency Contracts, Liability, Fair Value Disclosure	0.0		0.0
Deferred compensation plans	1.7		1.5
Long term debt	0.0		0.0
Contingent consideration obligations	0.0		0.0
Level 2
Assets:
Cash and cash equivalents	0.0		0.0
Forward and swap contracts	1.3		0.2
Equity Securities, FV-NI	0.0		0.0
Investments	0.0		0.0
Liabilities:
Foreign Currency Contracts, Liability, Fair Value Disclosure	0.7		0.7
Deferred compensation plans	0.0		0.0
Long term debt	1,635.9		1,666.4
Contingent consideration obligations	0.0		0.0
Level 3
Assets:
Cash and cash equivalents	0.0		0.0
Forward and swap contracts	0.0		0.0
Equity Securities, FV-NI	0.0		0.0
Investments	0.0		0.0
Liabilities:
Foreign Currency Contracts, Liability, Fair Value Disclosure	0.0		0.0
Deferred compensation plans	0.0		0.0
Long term debt	0.0		0.0
Contingent consideration obligations	8.6		6.1
Reported Value Measurement [Member]
Assets:
Cash and cash equivalents	482.3		439.6
Forward and swap contracts	1.3		0.2
Equity Securities, FV-NI	2.7		3.2
Investments	1.5		1.3
Liabilities:
Foreign Currency Contracts, Liability, Fair Value Disclosure	0.7		0.7
Deferred compensation plans	1.7		1.5
Long term debt	1,893.7		1,931.7
Contingent consideration obligations	$ 8.6		$ 6.1