Derivative Financial Instruments - Information about Hedged Items Included in Consolidated Balance Sheet (Detail) - Long-term Borrowings [Member] - Derivatives Designated and Qualifying as Hedging Instruments [Member] - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Carrying Amount [Member]
Derivatives, Fair Value [Line Items]
Hedged Item	$ 3,742	$ 2,954
Cumulative Amount of Fair Value Hedging Adjustment Increasing (Decreasing) the Carrying Amount [Member]
Derivatives, Fair Value [Line Items]
Hedged Item	$ (104)	$ (44)