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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 12 Months Ended
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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

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