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Income Tax (Interest Accrued Related to Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Tax Examination [Line Items] |  |  |
Interest expense (benefit) recognized on the consolidated statements of operations (1) | $ (7) | $ 0 | $ 36
Interest included in other liabilities on the consolidated balance sheets | $ 22 | $ 15 |
Operating Expense |  |  |
Income Tax Examination [Line Items] |  |  |
Interest expense (benefit) recognized on the consolidated statements of operations (1) |  |  | 10
Current Income Tax Payable |  |  |
Income Tax Examination [Line Items] |  |  |
Interest expense (benefit) recognized on the consolidated statements of operations (1) |  |  | $ (26)

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- Definition Amount of interest expense accrued for an underpayment of income taxes. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15 + Details
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