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Financial Instruments (Detail) - Foreign Exchange Forwards / Swaps - Not Designated as Hedging Instrument - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Foreign Currency Fair Value Hedge Derivative [Line Items]    
Outstanding gross notional amount $ 197 $ 189
Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement $ 1 $ 1