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Derivative instruments - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Derivative Instruments Gain Loss [Line Items] |  |  |
Length of time hedged in foreign currency contracts | 3 years |  |
Foreign currency and cross currency swap contracts [Member] |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |
Amounts expected to be reclassified from AOCI into earnings over the next 12 months, foreign currency and cross-currency swaps | $ 159 |  |
Derivatives designated as hedging instruments [Member] | Foreign currency forward contracts [Member] |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |
Notional amount | 6,000 | $ 5,700 | $ 5,100
Derivatives designated as hedging instruments [Member] | Interest rate swap [Member] |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |
Notional amount | 6,700 | 6,700 |
Derivatives designated as hedging instruments [Member] | Forward interest rate contracts |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |
Notional amount | 700 |  |
Derivatives not designated as hedging instruments [Member] | Foreign currency forward contracts [Member] |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |
Notional amount | $ 517 | $ 680 | $ 1,000

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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + Details
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- Definition The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
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- Definition Maximum period of time the entity is hedging its exposure to variability in future cash flows for forecasted transactions, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transactions related to payment of variable interest on existing financial instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
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