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Derivatives and Hedging Activities - Narrative (Details) $ in Millions, £ in Billions	3 Months Ended	9 Months Ended
	Sep. 30, 2025 USD ($) derivative	Sep. 30, 2025 USD ($) derivative	Sep. 30, 2025 GBP (£) derivative	Dec. 31, 2024 USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Foreign currency transaction gains and losses resulting in a net gain (loss)	$ (1)	$ 49
Losses were offset by foreign currency transaction gains on hedged loans	0	0
Reclassification from AOCI	(2)	(5)
Cross Currency Swaps | Fair Value Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Outstanding balance of loans	453	453		$ 24
Outstanding balance of loans, current	346	346		17
Aggregate notional value	479	479		346
Cross Currency Swaps | Net Investment Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate notional value	3,700	3,700	£ 1.9	1,000
Currency Swaps Mature on July 10, 2028 | Fair Value Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate notional value	453	453		346
Two Cross Currency Swaps | Fair Value Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate notional value	$ 26	$ 26
Number of currency swaps | derivative	2	2	2
Two Cross Currency Swaps | Net Investment Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate notional value	$ 1,200	$ 1,200
Currency Swaps Will Mature Between 2026 And 2034 | Net Investment Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate notional value				$ 1,000
Currency Swaps Matured On February 15, 2040 | Net Investment Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate notional value | £			£ 0.7
Currency Swaps Matured On February 15, 2045 | Net Investment Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate notional value | £			£ 1.2

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