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Accounting for Derivative Instruments and Hedging Activities (Details) £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 GBP (£)	Dec. 31, 2024 USD ($)
Gain (loss) on financial instruments, net:
Change in fair value of cross-currency derivative instruments	$ (64)	$ 130	$ (280)
Foreign currency remeasurement of Sterling Notes to U.S. dollars	30	(85)	185
Gain (loss) on financial instruments, net	$ (34)	45	$ (95)
Cross Currency Derivatives
Derivatives:
Notional amount | £				£ 1,275
Level 2 | Cross Currency Derivatives
Derivatives:
Derivative Liability		$ 440			$ 504

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