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Employee Benefit Plans - Assumptions (Details)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Other Benefits      
Assumptions used to determine benefit obligations:      
Discount rate 2.90% 2.60% 3.20%
Assumptions used to determine net periodic benefit cost:      
Discount rate for service cost 3.00% 3.50% 4.60%
Discount rate for interest cost 2.10% 3.00% 4.20%
U.S.      
Assumptions used to determine net periodic benefit cost:      
Expected return on plan assets 6.50%    
U.S. | Pension Benefits      
Assumptions used to determine benefit obligations:      
Discount rate 2.80% 2.40% 3.10%
Rate of compensation increase 4.50% 4.50% 4.50%
Assumptions used to determine net periodic benefit cost:      
Discount rate for service cost 3.00% 3.30% 4.40%
Discount rate for interest cost 1.90% 2.60% 3.70%
Expected return on plan assets 6.50% 6.50% 6.80%
Rate of compensation increase 4.50% 4.50% 4.50%
Int’l. | Pension Benefits      
Assumptions used to determine benefit obligations:      
Discount rate 2.80% 2.40% 3.20%
Rate of compensation increase 4.10% 4.00% 4.00%
Assumptions used to determine net periodic benefit cost:      
Discount rate for service cost 2.40% 3.20% 4.40%
Discount rate for interest cost 2.40% 3.20% 4.40%
Expected return on plan assets 3.50% 4.50% 5.60%
Rate of compensation increase 4.00% 4.00% 4.00%