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Pension, Other Postretirement Benefits (OPEB) and Savings Plans - Fair Value Measurements and Levels of Inputs Used In Determining Fair Values (Parenthetical) (Details) - Pension Plan [Member] - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Defined Benefit Plan Disclosure [Line Items] |  |
Net receivables excluded from Fair Value | $ 6 | $ 2
Cash and foreign currency excluded from Fair Value | $ 1 |

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- Definition Cash and foreign currency excluded from Fair Value + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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Period Type: |