Fair Value Measurements (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Fair Value Measurements [Abstract]
Investments	$ 4.1	$ 2.3
Deferred compensation obligations	$ 4.1	2.3
Notice period for redeeming real estate investment funds	90 days
U.S. Pension Plans [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	$ 150.5	153.3	$ 179.9
U.S. Pension Plans [Member] | Money Market Investments [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	6.7	1.9
U.S. Pension Plans [Member] | Fixed Income Securities [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	45.3
U.S. Pension Plans [Member] | Pooled Equity Funds [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	7.0	34.9
U.S. Pension Plans [Member] | U.S. Government and Agency Securities [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	57.0
U.S. Pension Plans [Member] | Other [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	6.8	0.4
U.S. Pension Plans [Member] | Total [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	122.8	37.2
U.S. Pension Plans [Member] | Level 1 [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	8.1	34.9
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	7.0	34.9
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	1.1	0.0
U.S. Pension Plans [Member] | Level 2 [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	114.7	2.3
U.S. Pension Plans [Member] | Level 2 [Member] | Money Market Investments [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	6.7	1.9
U.S. Pension Plans [Member] | Level 2 [Member] | Fixed Income Securities [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	45.3
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	57.0
U.S. Pension Plans [Member] | Level 2 [Member] | Other [Member]
Fair Value Measurements [Abstract]
Fair value of plan assets	5.7	0.4
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	$ 27.7	$ 116.1