Fair Value Measurements (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Fair Value Measurements [Abstract]
Investments	$ 2.3	$ 2.9
Deferred compensation obligations	$ 2.3	2.9
Notice period for redeeming real estate investment funds	90 days
U.S. Pension Plans [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	$ 153.3	179.9	$ 183.3
U.S. Pension Plans [Member] | Money Market Investments [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	1.9	2.2
U.S. Pension Plans [Member] | Fixed Income Securities [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets		9.1
U.S. Pension Plans [Member] | Pooled Equity Funds [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	34.9	40.4
U.S. Pension Plans [Member] | U.S. Government and Agency Securities [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets		11.8
U.S. Pension Plans [Member] | Other [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	0.4	1.5
U.S. Pension Plans [Member] | Total [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	37.2	65.0
U.S. Pension Plans [Member] | Level 1 [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	34.9	40.5
U.S. Pension Plans [Member] | Level 1 [Member] | Money Market Investments [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	0.0	0.0
U.S. Pension Plans [Member] | Level 1 [Member] | Fixed Income Securities [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets		0.0
U.S. Pension Plans [Member] | Level 1 [Member] | Pooled Equity Funds [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	34.9	40.4
U.S. Pension Plans [Member] | Level 1 [Member] | U.S. Government and Agency Securities [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets		0.0
U.S. Pension Plans [Member] | Level 1 [Member] | Other [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	0.0	0.1
U.S. Pension Plans [Member] | Level 2 [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	2.3	24.5
U.S. Pension Plans [Member] | Level 2 [Member] | Money Market Investments [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	1.9	2.2
U.S. Pension Plans [Member] | Level 2 [Member] | Fixed Income Securities [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets		9.1
U.S. Pension Plans [Member] | Level 2 [Member] | Pooled Equity Funds [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	0.0	0.0
U.S. Pension Plans [Member] | Level 2 [Member] | U.S. Government and Agency Securities [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets		11.8
U.S. Pension Plans [Member] | Level 2 [Member] | Other [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	0.4	1.4
U.S. Pension Plans [Member] | Level 3 [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	0.0	0.0
U.S. Pension Plans [Member] | Net Asset Value [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	$ 116.1	$ 114.9