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Stock-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized (in shares) 9,900    
Shares reserved for issuance (in shares) 7,500    
Weighted average remaining contractual life, vested 3 years    
Number of years over which equity awards expire 10 years    
Share-based compensation, net of tax $ 179 $ 175 $ 149
Unrecognized compensation cost $ 177    
Period over which unrecognized compensation costs are expected to be recognized (years) 1 year 8 months 12 days    
Realized tax benefits from stock-based compensation activities $ 67 63 103
Stock Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Cash received from exercise of stock options $ 28 41 66
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of stock, granted (in shares) 612    
Average grant date fair value per unit (in dollars per share) $ 341.76    
Number of years over which equity awards vest 3 years    
Performance Stock Units (PSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of stock, granted (in shares) 100    
Number of years over which equity awards vest 3 years    
Performance Stock Units (PSUs) | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of shares that can be earned from stock awards, as a percentage of the target award 0.00%    
Performance Stock Units (PSUs) | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of shares that can be earned from stock awards, as a percentage of the target award 200.00%    
Performance Stock Units (PSUs) | Remaining Half Of PSUs Granted In Period      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Average grant date fair value per unit (in dollars per share) $ 341.53    
Performance Stock Units (PSUs) | Remaining PSUs Granted In Period      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Average grant date fair value per unit (in dollars per share) $ 301.38    
Segment Reconciling Items      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation $ 227 $ 221 $ 189