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Hedging Activities - Schedule of Notional Amounts of Outstanding Derivative Positions (Details) - Derivatives designated for hedge accounting: € in Millions, £ in Millions, $ in Millions, $ in Millions	Mar. 31, 2025 EUR (€)	Mar. 31, 2025 CAD ($)	Mar. 31, 2025 GBP (£)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 CAD ($)	Dec. 31, 2024 GBP (£)	Jun. 30, 2024 CAD ($)	Mar. 31, 2024 EUR (€)	Mar. 31, 2024 CAD ($)	Mar. 31, 2024 GBP (£)	Mar. 31, 2024 USD ($)	Jun. 15, 2023 USD ($)
Cross-currency swaps | Net Investment Hedges | CAD
Derivatives, Fair Value [Line Items]
Notional amounts of derivative		$ 6,500			$ 6,000		$ 2,500		$ 1,500
Cross-currency swaps | Fair Value Hedges | GBP
Derivatives, Fair Value [Line Items]
Notional amounts of derivative | £			£ 450							£ 450
Cross-currency swaps | Fair Value Hedges | EUR
Derivatives, Fair Value [Line Items]
Notional amounts of derivative | €	€ 1,100							€ 1,100
Floating interest rate swaps | Fair Value Hedges
Derivatives, Fair Value [Line Items]
Notional amounts of derivative				$ 1,300
Floating interest rate swaps | Fair Value Hedges | USD
Derivatives, Fair Value [Line Items]
Notional amounts of derivative				750							$ 1,250
Floating interest rate swaps | Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Notional amounts of derivative				850								$ 500
Floating interest rate swaps | Cash Flow Hedging | USD
Derivatives, Fair Value [Line Items]
Notional amounts of derivative				$ 850							$ 0
Interest rate swap locks, Foreign currency forwards and Other | Cash Flow Hedging | GBP
Derivatives, Fair Value [Line Items]
Notional amounts of derivative | £			£ 11			£ 45				£ 39

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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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+ References

No definition available.

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