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Derivative Financial Instruments - Impact of Derivatives on Other Comprehensive Income (Equity) (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Derivative Instruments Gain Loss [Line Items]        
Total gains (losses) on cash flow hedges $ (2) $ 1 $ (2) $ 4
Net changes in cash flow hedges, net of tax [1] (2) (5) (3) (9)
Interest Expense [Member]        
Derivative Instruments Gain Loss [Line Items]        
Reclassification adjustments for derivative (gains) losses included in net income (interest expense) $ 0 $ (6) $ (1) $ (13)
[1] See “Note 5 – Derivative Financial Instruments.”