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Fair Value Measurements - Schedule of Pension Plan Assets at Fair Value by Level (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | $ 2,327 | $ 3,016 |
Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 2,327 | 3,016 | $ 3,000
Pension Plan | Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 1,265 | 1,893 |
Pension Plan | Total | Common Stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 335 | 487 |
Pension Plan | Total | Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 29 | 14 |
Pension Plan | Total | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 157 | 108 |
Pension Plan | Total | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 647 | 1,013 |
Pension Plan | Total | Government Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 88 | 173 |
Pension Plan | Total | Asset-backed Securities, Derivatives and Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 9 | 98 |
Pension Plan | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 521 | 609 |
Pension Plan | Level 1 | Common Stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 335 | 487 |
Pension Plan | Level 1 | Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 29 | 14 |
Pension Plan | Level 1 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 157 | 108 |
Pension Plan | Level 1 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 0 | 0 |
Pension Plan | Level 1 | Government Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 0 | 0 |
Pension Plan | Level 1 | Asset-backed Securities, Derivatives and Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 0 | 0 |
Pension Plan | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 744 | 1,284 |
Pension Plan | Level 2 | Common Stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 0 | 0 |
Pension Plan | Level 2 | Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 0 | 0 |
Pension Plan | Level 2 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 0 | 0 |
Pension Plan | Level 2 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 647 | 1,013 |
Pension Plan | Level 2 | Government Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 88 | 173 |
Pension Plan | Level 2 | Asset-backed Securities, Derivatives and Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | 9 | 98 |
Pension Plan | Investments measured at net asset value |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments at Fair Value | $ 1,062 | $ 1,123 |

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