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Stock-based Compensation Plans - Stock-Based Compensation Expense Recognized in Income (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Stock-based compensation expense $ 313 $ 324 $ 397
Employee Stock Options      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Stock-based compensation expense 17 36 75
Restricted Stock      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Stock-based compensation expense 255 254 293
DSPP      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Stock-based compensation expense $ 41 $ 34 $ 29