v3.26.1
Accounting for Derivative Instruments and Hedging Activities (Details)
£ in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
GBP (£)
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Gain (Loss) On Financial Instruments, Net              
Change in fair value of cross-currency derivative instruments $ 41 $ 124 $ (35) $ 111      
Foreign currency remeasurement of Sterling Notes to U.S. dollars (4) (104) 27 (156)      
Gain (loss) on financial instruments, net $ 37 $ 20 $ (8) $ (45)      
Cross Currency Derivatives              
Derivatives:              
Notional amount | £         £ 1,275    
Level 2 | Cross Currency Derivatives              
Derivatives:              
Derivative Liability, Statement of Financial Position [Extensible Enumeration]         OTHER LONG-TERM LIABILITIES OTHER LONG-TERM LIABILITIES OTHER LONG-TERM LIABILITIES
Derivative Liability           $ 442 $ 406