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Financial Instruments and Fair Value Measurements - Foreign Currency Contracts Activity (Detail) - Forwards [Member] - Net Investment Hedges [Member] - Designated As Hedging Instrument [Member]
 3 Months Ended
Mar. 31, 2026
USD ($)
Derivative
Mar. 31, 2025
USD ($)
Derivative
Derivative [Line Items]    
Notional amounts at January 1 $ 883,000,000 $ 595,000,000
New contracts 125,000,000 0
Matured, expired or settled contracts (125,000,000) (163,000,000)
Notional amounts at March 31 883,000,000 432,000,000
CAD    
Derivative [Line Items]    
Notional amounts at January 1 200,000,000 163,000,000
New contracts 0 0
Matured, expired or settled contracts 0 (163,000,000)
Notional amounts at March 31 $ 200,000,000 $ 0
Weighted average forward rate at March 31 1.36 0
Active contracts at March 31 | Derivative 2 0
GBP    
Derivative [Line Items]    
Notional amounts at January 1 $ 683,000,000 $ 432,000,000
New contracts 125,000,000 0
Matured, expired or settled contracts (125,000,000) 0
Notional amounts at March 31 $ 683,000,000 $ 432,000,000
Weighted average forward rate at March 31 1.34 1.26
Active contracts at March 31 | Derivative 6 4