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Employee Benefits - Asset Target Allocations Prescribed by Pension Funds' Investment Policies (Details)
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]  
Total Target Allocation 100.00%
Global equity securities  
Defined Benefit Plan Disclosure [Line Items]  
Total Target Allocation 16.00%
Fixed income securities  
Defined Benefit Plan Disclosure [Line Items]  
Total Target Allocation 84.00%