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Derivative Instruments (Effect Of Derivative Instruments On Consolidated Statements Of Operations) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Derivative [Line Items] |  |  |  |
Net gain/(loss) recognized in income | $ 9 | $ 27 | $ (5) | $ 57
Insured swaps [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Net gain/(loss) recognized in income | 0 | 1 | 0 | 1
Interest Rate Swap [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Net gain/(loss) recognized in income | 10 | 26 | 1 | 56
Currency swaps-VIE [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Net gain/(loss) recognized in income | $ (1) | $ 0 | $ (6) | $ 0

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A + 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480237/815-40-50-5 + Details
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