Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($)	3 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Hedge percentage for foreign exchange transactional exposures, minimum	70.00%
Hedge percentage for foreign exchange transactional exposures, maximum	90.00%
Net Investment Hedging
Derivative [Line Items]
Pre-tax gains (losses) related to net investment hedges recorded in other comprehensive income	$ (269,000,000)	$ 73,000,000
Pre-tax gains (losses) related to net investment hedges reclassified from other comprehensive income	$ 0	$ 0

Hedge percentage for foreign exchange transactional exposures, Maximum.

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- Definition

Hedge percentage for foreign exchange transactional exposures, Minimum.

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CCC
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL109998896-113959

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- Definition

Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from derivative designated and qualifying as net investment hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CCC
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL109998896-113959

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