Derivative financial instruments - Information about Hedged Items Included in Consolidated Balance Sheet (Detail) - Designated as Hedging Instrument - Long-term Debt - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
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| Carrying Amount | ||
| Derivatives, Fair Value [Line Items] | ||
| Hedged item | $ 6,039 | $ 6,072 |
| Estimated Fair Value | ||
| Derivatives, Fair Value [Line Items] | ||
| Hedged item | $ (49) | $ (16) |
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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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