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Income Taxes (Valuation Allowance on Deferred Tax Assets) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Valuation Allowance, Deferred Tax Asset [Roll Forward] |  |  |
Balance, beginning of year | $ 159 | $ 147 | $ 143
Charged to costs and expenses | 11 | 28 | 6
Other adjustments | 120 | (16) | (2)
Balance, ending of year | 290 | 159 | 147
Federal |  |  |
Valuation Allowance, Deferred Tax Asset [Roll Forward] |  |  |
Balance, beginning of year | 22 | 20 | 15
Charged to costs and expenses | 3 | 2 | 5
Other adjustments | 0 | 0 | 0
Balance, ending of year | 25 | 22 | 20
State |  |  |
Valuation Allowance, Deferred Tax Asset [Roll Forward] |  |  |
Balance, beginning of year | 109 | 107 | 116
Charged to costs and expenses | 0 | 16 | (8)
Other adjustments | 23 | (14) | (1)
Balance, ending of year | 132 | 109 | 107
Foreign Operations |  |  |
Valuation Allowance, Deferred Tax Asset [Roll Forward] |  |  |
Balance, beginning of year | 28 | 20 | 12
Charged to costs and expenses | 8 | 10 | 9
Other adjustments | 97 | (2) | (1)
Balance, ending of year | $ 133 | $ 28 | $ 20

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- Definition Valuation Allowance, Deferred Taxes Asset, Other Adjustments + References No definition available. + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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