Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details)

v3.20.4
Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
U.S. | Postretirement Health and Life Plans      
Components of net periodic benefit cost (income)      
Service cost $ 5 $ 5 $ 6
Interest cost 32 38 36
Expected return on plan assets (4) (5) (6)
Amortization of net actuarial loss 29 (24) (27)
Other (2) (2) (3)
Net periodic benefit cost (income) $ 60 $ 12 $ 6
Weighted-average assumptions used to determine net cost for years ended December 31      
Discount rate 3.27% 4.25% 3.58%
Expected return on plan assets 2.00% 2.00% 2.00%
U.S. | Qualified | Pension Plan      
Components of net periodic benefit cost (income)      
Service cost $ 0 $ 0 $ 0
Interest cost 500 593 563
Expected return on plan assets (1,154) (1,088) (1,136)
Amortization of net actuarial loss 173 135 147
Other 0 0 0
Net periodic benefit cost (income) $ (481) $ (360) $ (426)
Weighted-average assumptions used to determine net cost for years ended December 31      
Discount rate 3.32% 4.32% 3.68%
Expected return on plan assets 6.00% 6.00% 6.00%
U.S. | Nonqualified | Other Pension Plan      
Components of net periodic benefit cost (income)      
Service cost $ 1 $ 1 $ 1
Interest cost 90 113 105
Expected return on plan assets (71) (95) (84)
Amortization of net actuarial loss 50 34 43
Other 0 0 0
Net periodic benefit cost (income) $ 70 $ 53 $ 65
Weighted-average assumptions used to determine net cost for years ended December 31      
Discount rate 3.20% 4.26% 3.58%
Expected return on plan assets 2.77% 3.73% 3.19%
Rate of compensation increase 4.00% 4.00% 4.00%
Non-U.S. | Pension Plan      
Components of net periodic benefit cost (income)      
Service cost $ 20 $ 17 $ 19
Interest cost 49 65 65
Expected return on plan assets (66) (99) (126)
Amortization of net actuarial loss 9 6 10
Other 8 4 12
Net periodic benefit cost (income) $ 20 $ (7) $ (20)
Weighted-average assumptions used to determine net cost for years ended December 31      
Discount rate 1.81% 2.60% 2.39%
Expected return on plan assets 2.57% 4.13% 4.37%
Rate of compensation increase 4.10% 4.49% 4.31%