Pension and Postretirement Benefit Plans - Pension Asset Fair Value Level 3 (Details) - Qualified and Non-qualified Pension Benefits - Level 3 - International - Funded - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Benefit Plan Information | ||
| Defined benefit plan increase (decrease) related to aggregate of net purchases and net unrealized gains and losses | $ 24 | $ 7 |
| Defined benefit plan increase (decrease) related to currency exchange rates | 42 | 44 |
| Defined benefit plan increase (decrease) related to Level 3 assets | $ 66 | $ 51 |