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Fair Value Measurements - Change in Balance Sheet Carrying Value Associated with Level 3 Financial Instruments Carried at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |  |
Balance, beginning of period | $ (255) | $ (194) | $ (302)
Total gains/(losses): |  |  |
Included in earnings | $ 18 | $ (104) | $ 84
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Mark-to-market gains (losses) recognized | Mark-to-market gains (losses) recognized | Mark-to-market gains (losses) recognized
Included in other comprehensive income | $ 0 | $ 0 | $ 0
Settlements | 47 | 43 | 24
Transfers in and/or out of level 3 | 0 | 0 | 0
Balance, end of period | (190) | (255) | (194)
Change in mark-to-market gains/(losses) relating to instruments still held at the reporting date | 65 | (62) | (154)
Interest Rate Swaps [Member] |  |  |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |  |
Balance, beginning of period | (2) | (4) | (8)
Total gains/(losses): |  |  |
Included in earnings | 1 | 1 | 3
Included in other comprehensive income | 0 | 0 | 0
Settlements | 0 | 1 | 1
Transfers in and/or out of level 3 | 0 | 0 | 0
Balance, end of period | (1) | (2) | (4)
Change in mark-to-market gains/(losses) relating to instruments still held at the reporting date | 1 | 1 | 3
Cross-Currency Interest Rate Swaps [Member] |  |  |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |  |
Balance, beginning of period | (253) | (190) | (294)
Total gains/(losses): |  |  |
Included in earnings | 17 | (105) | 81
Included in other comprehensive income | 0 | 0 | 0
Settlements | 47 | 42 | 23
Transfers in and/or out of level 3 | 0 | 0 | 0
Balance, end of period | (189) | (253) | (190)
Change in mark-to-market gains/(losses) relating to instruments still held at the reporting date | 64 | (63) | (157)
Other [Member] |  |  |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |  |
Balance, beginning of period | 0 | 0 | 0
Total gains/(losses): |  |  |
Included in earnings | 0 | 0 | 0
Included in other comprehensive income | 0 | 0 | 0
Settlements | 0 | 0 | 0
Transfers in and/or out of level 3 | 0 | 0 | 0
Balance, end of period | 0 | 0 | 0
Change in mark-to-market gains/(losses) relating to instruments still held at the reporting date | $ 0 | $ 0 | $ 0

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- Definition Change in mark-to-market gains/(losses) relating to instruments still held at the reporting date. + References No definition available. + Details
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- Definition Fair value net derivative asset (liability) measured on recurring basis unobservable input reconciliation gains (losses). + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
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- Definition Amount of gain (loss) recognized in other comprehensive income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
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- Definition Amount of settlements of financial instrument classified as a derivative asset (liability) after deduction of derivative liability, measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
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