Derivative, Notional Amount, Entered Into During Period

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- Definition

Derivative, Notional Amount, Terminated

+ References

No definition available.

+ Details

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- Definition

Derivative, Termination Proceeds, Amortization Period

+ References

No definition available.

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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

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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
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

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- Definition

Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-11

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-15

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4C
-Subparagraph (c)
-SubTopic 10
-Topic 815
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C

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Hedging Activities - Narrative (Details) $ in Millions	3 Months Ended			6 Months Ended		12 Months Ended
Hedging Activities - Narrative (Details) $ in Millions	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Oct. 31, 2024 CAD ($)	Sep. 30, 2024 CAD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 CAD ($)	Mar. 31, 2024 CAD ($)	Jun. 15, 2023 USD ($)
Derivative [Line Items]
Other comprehensive income (loss), cash flows hedge, gain (loss) reclassification, before tax	$ 0	$ 0		$ 0	$ 0
Net Investment Hedging \| CAD \| Currency swap \| Derivatives designated for hedge accounting
Derivative [Line Items]
Derivative, notional amount								$ 2,500		$ 2,500	$ 1,500
Derivative notional amount, terminated										$ 1,500
Net Investment Hedging \| CAD \| Currency swap \| Derivatives designated for hedge accounting \| Subsequent Event
Derivative [Line Items]
Derivative, notional amount							$ 1,000
Fair Value Hedges \| Floating interest rate swaps \| Derivatives designated for hedge accounting
Derivative [Line Items]
Derivative, notional amount						$ 1,300,000,000			$ 1,300,000,000
Derivative notional amount, terminated									$ 500,000,000
Cash Flow Hedges \| Currency swap \| Derivatives designated for hedge accounting
Derivative [Line Items]
Other comprehensive income (loss), cash flows hedge, gain (loss) reclassification, before tax	$ (14,000,000)	$ 33,000,000		$ (14,000,000)	$ 27,000,000
Cash Flow Hedges \| Floating interest rate swaps \| Derivatives designated for hedge accounting
Derivative [Line Items]
Derivative, notional amount												$ 500,000,000
Derivative, notional amount, entered into during period			$ 50,000,000			$ 450,000,000
Derivative termination proceeds, amortization period (in years)				10 years