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Fair Value Measurements (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Fair Value Measurements [Abstract]      
Investments $ 2.9 $ 2.8  
Deferred compensation obligations $ 2.9 2.8  
Notice period for redeeming real estate investment funds 90 days    
Notice period for redeeming fixed income investment funds 60 days    
U.S. Pension Plans [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets $ 179.9 183.3 $ 131.1
U.S. Pension Plans [Member] | Money Market Investments [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 2.2 2.5  
U.S. Pension Plans [Member] | Fixed Income Securities [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 9.1 8.9  
U.S. Pension Plans [Member] | Pooled Equity Funds [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 40.4 37.3  
U.S. Pension Plans [Member] | U.S. Government and Agency Securities [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 11.8 14.5  
U.S. Pension Plans [Member] | Other [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 1.5 1.1  
U.S. Pension Plans [Member] | Total [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 65.0 64.3  
U.S. Pension Plans [Member] | Level 1 [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 40.5 37.4  
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 0.0  
U.S. Pension Plans [Member] | Level 1 [Member] | Pooled Equity Funds [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 40.4 37.3  
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 0.0  
U.S. Pension Plans [Member] | Level 1 [Member] | Other [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 0.1 0.1  
U.S. Pension Plans [Member] | Level 2 [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 24.5 26.9  
U.S. Pension Plans [Member] | Level 2 [Member] | Money Market Investments [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 2.2 2.5  
U.S. Pension Plans [Member] | Level 2 [Member] | Fixed Income Securities [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 9.1 8.9  
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 14.5  
U.S. Pension Plans [Member] | Level 2 [Member] | Other [Member]      
Fair Value Measurements [Abstract]      
Fair value of plan assets 1.4 1.0  
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 $ 114.9 $ 119.0