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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

X

- 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

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-Publisher FASB
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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
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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
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611

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-Name Accounting Standards Codification
-Topic 210
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-Section 55
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-URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313

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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

No definition available.

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