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Stockholders' Equity - Additional Information (Detail) - USD ($) |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 27, 2019 | Oct. 30, 2019 | Dec. 31, 2019 | Sep. 29, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 24, 2018 | Mar. 25, 2018 | Dec. 31, 2017 | Sep. 24, 2017 | Jun. 25, 2017 | Mar. 26, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 20, 2019 | Sep. 26, 2019
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  |  | 1,500,000,000 |  |  |  | 1,500,000,000.0 |  |  |  |  |  |  |  | 1,500,000,000 | 1,500,000,000.0 |  |  |
Preferred stock, shares authorized (in shares) |  |  | 50,000,000 |  |  |  | 50,000,000 |  |  |  |  |  |  |  | 50,000,000 | 50,000,000 |  |  |
Common stock, shares issued and outstanding (in shares) |  |  | 281,000,000 |  |  |  | 283,000,000 |  |  |  |  |  |  |  | 281,000,000 | 283,000,000 |  |  |
Common stock, $1 par value per share |  |  | $ 280,000,000 |  |  |  | $ 281,000,000 |  |  |  |  |  |  |  | $ 280,000,000 | $ 281,000,000 |  |  |
Preferred stock, shares issued (in shares) |  |  | 0 |  |  |  | 0 |  |  |  |  |  |  |  | 0 | 0 |  |  |
Number of shares of common stock repurchased with cash (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,500,000 | 4,700,000 | 7,100,000 |  |
Reduction to stockholder's equity due to repurchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,200,000,000 | $ 1,492,000,000 | $ 2,001,000,000 |  |
Cash paid for repurchases of common stock |  | $ 350,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,000,000 | $ 1,492,000,000 | 2,001,000,000 |  |
Accelerate Share Repurchase (ASR) authorized amount |  |  | $ 350,000,000 |  |  |  |  |  |  |  |  |  |  |  | $ 350,000,000 |  |  |  |
Shares received (in shares) |  | 658,886 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 257,363 |
Average Price Paid Per Share | $ 381.99 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding |  |  | 0 |  |  |  | 0 |  |  |  |  |  |  |  | 0 | 0 |  |  |
Additional share repurchase program authorized amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000.0
Remaining authorized repurchase amount under share repurchase program |  |  | $ 2,800,000,000 |  |  |  |  |  |  |  |  |  |  |  | $ 2,800,000,000 |  |  |  |
Common stock, par value (in USD per share) |  |  | $ 1 |  |  |  | $ 1 |  |  |  |  |  |  |  | $ 1 | $ 1 |  |  |
Additional paid-in capital |  |  | $ 0 |  |  |  | $ 0 |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  | $ 0
Dividends paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,556,000,000 | $ 2,347,000,000 | $ 2,163,000,000 |  |
Common stock dividends per share paid (in dollars per share) |  |  | $ 2.40 | $ 2.20 | $ 2.2 | $ 2.20 | $ 2.20 | $ 2.00 | $ 2.0 | $ 2.0 | $ 2.00 | $ 1.82 | $ 1.82 | $ 1.82 | $ 9.00 | $ 8.20 | $ 7.46 |  |
Retained Earnings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reduction to stockholder's equity due to repurchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 713,000,000.0 | $ 1,083,000,000 | $ 1,596,000,000 |  |

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