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Employee Benefit Plans - Pension Plan Assets (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 2,583 | $ 3,457 | $ 3,462
Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 6 | 2 |
Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,858 | 2,708 |
Fair Value Measured at Net Asset Value Per Share |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 702 | 546 |
Return Seeking Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Actual Allocation, Percentage | 42.10% |  |
Liability Matching Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Actual Allocation, Percentage | 57.90% |  |
Cash |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 6 | 2 |
Cash | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 6 | 2 |
Cash | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Collective trust funds(a) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,858 | 2,708 |
Collective trust funds(a) | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Collective trust funds(a) | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,858 | 2,708 |
Includes accrued liabilities and excluded accrued investment income and other receivables and investments measured at NAV |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,864 | 2,710 |
Accrued investment income and other receivables |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 42 | 247 |
Accured liabilities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ (25) | $ (46) |
Minimum | Return Seeking Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation, Percentage | 20.00% |  |
Maximum | Return Seeking Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation, Percentage | 40.00% |  |

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