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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Income Taxes Disclosure [Line Items]        
Decrease in unrecognized tax benefits within the next twelve months $ 120   $ 120  
Increase in unrecognized tax benefits within the next twelve months 20   20  
Amount of potential additional income tax expense related to an IRS notice of proposed adjustment subject to interest and penalties. $ 370   $ 370  
Effective tax rate 19.60% 24.20% 19.60% 21.50%
U.S. corporate income tax rate     21.00%