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Derivative instruments (Fair Value of Derivatives) (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Derivatives Fair Value [Line Items] |  |
Derivative Asset | $ 252 | $ 341
Derivative Liability | 1,252 | 1,398
Forward Interest Rate Contracts |  |
Derivatives Fair Value [Line Items] |  |
Derivative Liability | 0 | 5
Derivatives designated as hedging instrument |  |
Derivatives Fair Value [Line Items] |  |
Derivative Asset | 252 | 341
Derivative Liability | 1,252 | 1,398
Derivatives designated as hedging instrument | Foreign currency forward contracts |  |
Derivatives Fair Value [Line Items] |  |
Derivative Asset | 252 | 287
Derivative Liability | 73 | 76
Derivatives designated as hedging instrument | Cross-currency swap contracts |  |
Derivatives Fair Value [Line Items] |  |
Derivative Asset | 0 | 54
Derivative Liability | 517 | 541
Derivatives designated as hedging instrument | Interest rate swap contracts |  |
Derivatives Fair Value [Line Items] |  |
Derivative Asset | 0 | 0
Derivative Liability | 662 | 776
Derivatives designated as hedging instrument | Forward Interest Rate Contracts |  |
Derivatives Fair Value [Line Items] |  |
Derivative Asset | 0 | 0
Derivatives designated as hedging instrument | Forward Contracts |  |
Derivatives Fair Value [Line Items] |  |
Derivative Liability | $ 0 | $ 5

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 + Details
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