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Derivative instruments - Schedule of Hedged Liabilities and Cumulative Amount (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
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Derivative [Line Items] |  |
Cumulative amounts of fair value hedging adjustments related to the carrying amounts of the hedged liabilities | $ (247) | $ (343)
Current portion of long-term debt |  |
Derivative [Line Items] |  |
Carrying amounts of hedged liabilities | 1,051 | 1,045
Cumulative amounts of fair value hedging adjustments related to the carrying amounts of the hedged liabilities | 51 | 45
Carrying value with discontinued hedging relationships | 54 | 56
Hedging adjustments on discontinued hedging relationships | 54 | 56
Long-term debt |  |
Derivative [Line Items] |  |
Carrying amounts of hedged liabilities | 5,244 | 5,152
Cumulative amounts of fair value hedging adjustments related to the carrying amounts of the hedged liabilities | (298) | (388)
Carrying value with discontinued hedging relationships | 219 | 232
Hedging adjustments on discontinued hedging relationships | $ 119 | $ 132

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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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- Definition Amount of cumulative increase (decrease) in fair value of hedged liability in fair value hedge, attributable to hedged risk, remaining after discontinued hedge. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4EE -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4EE + Details
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- Definition Amount of liability hedged in fair value hedging relationship. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4EE -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4EE + Details
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- Definition Amount of cumulative increase (decrease) in fair value of hedged liability in fair value hedge, attributable to hedged risk. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4EE -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4EE + Details
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