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EMPLOYEE BENEFIT PLANS - Schedule of Target Weighted-Average Asset Allocations and Fair Value (Details) - Defined benefit pension plans - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]      
Target asset allocations (as a percent) 100.00%    
Plan assets at fair value $ 76.9 $ 73.3 $ 63.2
Total plan assets measured at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 67.8 65.5  
Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 55.8 55.8  
Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 11.1 8.7  
Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.9 1.0  
Alternative investments measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 9.1 7.8  
Cash | Total plan assets measured at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 5.4 3.0  
Cash | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 5.4 3.0  
Cash | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
Cash | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value $ 0.0 0.0  
Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Target asset allocations (as a percent) 28.30%    
United States equities | Total plan assets measured at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value $ 1.6 3.3  
United States equities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 1.6 3.3  
United States equities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
United States equities | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
International equities | Total plan assets measured at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 16.3 16.1  
International equities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 16.3 16.1  
International equities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
International equities | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value $ 0.0 0.0  
Debt securities      
Defined Benefit Plan Disclosure [Line Items]      
Target asset allocations (as a percent) 41.70%    
United States government bonds | Total plan assets measured at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value $ 6.2 7.4  
United States government bonds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 6.2 7.4  
United States government bonds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
United States government bonds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
Foreign government bonds | Total plan assets measured at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 26.3 26.0  
Foreign government bonds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 26.3 26.0  
Foreign government bonds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
Foreign government bonds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value $ 0.0 0.0  
Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Target asset allocations (as a percent) 9.80%    
Real estate | Total plan assets measured at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value $ 7.6 5.6  
Real estate | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
Real estate | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 7.6 5.6  
Real estate | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
Mortgages | Total plan assets measured at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 3.5 3.1  
Mortgages | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
Mortgages | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 3.5 3.1  
Mortgages | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
Insurance contracts | Total plan assets measured at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.9 1.0  
Insurance contracts | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
Insurance contracts | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0.0 0.0  
Insurance contracts | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value $ 0.9 $ 1.0 $ 0.9
Other      
Defined Benefit Plan Disclosure [Line Items]      
Target asset allocations (as a percent) 20.20%