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Stock Compensation Plans - Stock-Based Compensation Expense and Related Tax Benefits (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Feb. 01, 2021
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total stock-based compensation expense   $ 17 $ 9 $ 50 $ 30
Less: Tax benefit   (3) (2) (10) (5)
Total stock-based compensation expense, after tax   14 7 40 25
Nutrition & Biosciences, Inc          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total stock-based compensation expense       $ 4  
Shares issued as part of merger consideration (shares) 141,740,461        
Equity issued in business combination, fair value $ 25        
Post-combination service period       3 years  
Nutrition & Biosciences, Inc | Share-based Payment Arrangement, Option          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares issued as part of merger consideration (shares) 335,347        
Nutrition & Biosciences, Inc | Restricted Stock Units (RSUs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares issued as part of merger consideration (shares) 258,572        
Nutrition & Biosciences, Inc | Stock Appreciation Rights (SARs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares issued as part of merger consideration (shares) 5,816        
Equity-based awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total stock-based compensation expense   17 8 $ 44 27
Liability-based awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total stock-based compensation expense   $ 0 $ 1 $ 6 $ 3