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Accounting Pronouncements Accounting Pronouncements (Details) - USD ($) $ in Millions |  | 9 Months Ended
--- | --- | ---
Jan. 01, 2020 | Sep. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Credit Losses, Topic 326 (ASC Topic 326) |  | $ 2
Retained Earnings |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Credit Losses, Topic 326 (ASC Topic 326) | $ 2 | $ 2

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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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- Definition Credit Losses, Topic 326 (ASC Topic 326) + References No definition available. + Details
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- Details
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