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v3.21.1

Pensions and Other Postretirement Benefits (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Non-service cost components of net periodic pension and OPEB income | $ 483 | $ 338
Global OPEB Plans |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Service cost | 4 | 5
Interest cost | 31 | 43
Expected return on plan assets | 0 | 0
Amortization of prior service cost (credit) | (2) | (2)
Amortization of net actuarial losses | 25 | 19
Net periodic pension and OPEB (income) expense | 58 | 65
U.S. | Pension Plan |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Service cost | 65 | 62
Interest cost | 269 | 429
Expected return on plan assets | (795) | (816)
Amortization of prior service cost (credit) | (1) | (1)
Amortization of net actuarial losses | 7 | 4
Net periodic pension and OPEB (income) expense | (455) | (322)
Non-U.S. | Pension Plan |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Service cost | 38 | 29
Interest cost | 59 | 91
Expected return on plan assets | (152) | (170)
Amortization of prior service cost (credit) | 1 | 2
Amortization of net actuarial losses | 54 | 42
Net periodic pension and OPEB (income) expense | $ 0 | $ (6)

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