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Defined Benefit Pension Plans - Schedule of Significant Actuarial Weighted Average Assumptions Used in Determining the Benefit Obligation and Net Periodic Benefit Cost (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Retirement Benefits [Abstract]      
Discount rate 1.10% 1.76% 2.24%
Expected annual rate of compensation increase 3.68% 3.76% 3.60%
Discount rate 1.76% 2.24% 2.21%
Expected rate of return on plan assets 4.89% 5.19% 5.58%
Expected annual rate of compensation increase 3.76% 3.60% 3.64%