Stockholders' Equity - Additional Information (Detail) - USD ($) |
3 Months Ended | 12 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Sep. 25, 2016 |
Jun. 26, 2016 |
Mar. 27, 2016 |
Dec. 31, 2015 |
Sep. 27, 2015 |
Jun. 28, 2015 |
Mar. 29, 2015 |
Dec. 31, 2014 |
Sep. 28, 2014 |
Jun. 29, 2014 |
Mar. 30, 2014 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Sep. 22, 2016 |
|
| Shareholders Equity [Line Items] | ||||||||||||||||
| Common stock, shares authorized | 1,500,000,000 | 1,500,000,000 | 1,500,000,000 | 1,500,000,000 | ||||||||||||
| Preferred stock, shares authorized | 50,000,000 | 50,000,000 | 50,000,000 | 50,000,000 | ||||||||||||
| Common stock, shares issued and outstanding | 290,000,000 | 305,000,000 | 290,000,000 | 305,000,000 | ||||||||||||
| Common stock, shares outstanding for Balance Sheet presentation purposes | 289,000,000 | 303,000,000 | 289,000,000 | 303,000,000 | ||||||||||||
| Preferred stock, shares issued and outstanding | 0 | 0 | 0 | 0 | ||||||||||||
| Cash paid for repurchases of common stock | $ 2,096,000,000 | $ 3,071,000,000 | $ 1,900,000,000 | |||||||||||||
| Number of shares of common stock repurchased with cash | 8,900,000 | 15,200,000 | 11,500,000 | |||||||||||||
| Additional share repurchase program authorized amount | $ 2,000,000,000 | |||||||||||||||
| Remaining authorized repurchase amount under share repurchase program | $ 3,500,000,000 | $ 3,500,000,000 | ||||||||||||||
| Common stock par value, per share | $ 1 | $ 1 | $ 1 | $ 1 | ||||||||||||
| Additional paid-in capital | $ 0 | $ 0 | $ 0 | $ 0 | ||||||||||||
| Reduction to stockholder's equity due to repurchases of common stock | 2,096,000,000 | 3,071,000,000 | $ 1,900,000,000 | |||||||||||||
| Dividends preferred stock cash | $ 2,000,000,000 | $ 1,900,000,000 | $ 1,800,000,000 | |||||||||||||
| Dividends, per share | $ 6.77 | $ 6.15 | $ 5.49 | |||||||||||||
| Quarterly increase dividend rate | 10.00% | 10.00% | 10.00% | |||||||||||||
| Common stock dividends per share declared | $ 1.82 | $ 1.65 | $ 1.65 | $ 1.65 | $ 1.65 | $ 1.50 | $ 1.50 | $ 1.50 | $ 1.50 | $ 1.33 | $ 1.33 | $ 1.33 | $ 6.77 | $ 6.15 | $ 5.49 | |
| Retained Earnings | ||||||||||||||||
| Shareholders Equity [Line Items] | ||||||||||||||||
| Reduction to stockholder's equity due to repurchases of common stock | $ 1,692,000,000 | $ 2,400,000,000 | $ 1,096,000,000 | |||||||||||||