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Pension Benefits - Actuarial Assumptions for Project Benefit Obligations (Details) - Pension Plans, Defined Benefit
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Discount Rate 2.89% 2.56%
Rate of Increase in Future Compensation Levels 3.40% 3.40%