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Benefit Plans (Funded Status) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Changes in benefit obligation: |  |  |
Actuarial (gain) loss | $ (84) | $ 205 |
Pension Benefits |  |  |
Changes in benefit obligation: |  |  |
Balance at beginning of period | 2,769 | 2,661 |
Interest cost | 62 | 80 | $ 100
Participants' contributions | 0 | 0 |
Actuarial (gain) loss | (84) | 205 |
Benefits paid | (182) | (173) |
Foreign currency translation and other | (2) | 3 |
Settlements | (2) | (7) |
Balance at end of period | 2,561 | 2,769 | 2,661
Change in plan assets: |  |  |
Balance beginning of period | 2,420 | 2,285 |
Actual return on plan assets | 332 | 295 |
Company contributions | 10 | 16 |
Participants' contributions | 0 | 0 |
Benefits paid | (182) | (173) |
Foreign currency translation and other | (1) | 4 |
Settlements | (2) | (7) |
Balance end of period | 2,577 | 2,420 | 2,285
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract] |  |  |
Funded status | 16 | (349) |
Amounts recognized on the Consolidated Balance Sheets as of December 31: |  |  |
Other assets | 77 | 2 |
Other liabilities | (61) | (351) |
Net amount recognized | 16 | (349) |
Amounts recognized in Accumulated other comprehensive income, not yet recognized in net periodic cost (benefit): |  |  |
Net actuarial (gain) loss | 763 | 1,073 |
Net amount recognized | 763 | 1,073 |
Postretirement Benefits |  |  |
Changes in benefit obligation: |  |  |
Balance at beginning of period | 7 | 8 |
Interest cost | 0 | 0 |
Participants' contributions | 3 | 2 |
Actuarial (gain) loss | 1 | 2 |
Benefits paid | (5) | (5) |
Foreign currency translation and other | 0 | 0 |
Settlements | 0 | 0 |
Balance at end of period | 6 | 7 | 8
Change in plan assets: |  |  |
Balance beginning of period | 0 | 0 |
Actual return on plan assets | 0 | 0 |
Company contributions | 2 | 3 |
Participants' contributions | 3 | 2 |
Benefits paid | (5) | (5) |
Foreign currency translation and other | 0 | 0 |
Settlements | 0 | 0 |
Balance end of period | 0 | 0 | $ 0
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract] |  |  |
Funded status | (6) | (7) |
Amounts recognized on the Consolidated Balance Sheets as of December 31: |  |  |
Other assets | 0 | 0 |
Other liabilities | (6) | (7) |
Net amount recognized | (6) | (7) |
Amounts recognized in Accumulated other comprehensive income, not yet recognized in net periodic cost (benefit): |  |  |
Net actuarial (gain) loss | 1 | 0 |
Net amount recognized | $ 1 | $ 0 |

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