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Stock Repurchase Program - Additional Information (Detail) - USD ($) shares in Thousands |  |  | 3 Months Ended | 5 Months Ended | 253 Months Ended
--- | --- | --- | --- | --- | ---
Feb. 10, 2019 | Sep. 26, 2018 | Feb. 09, 2019 | Feb. 10, 2018 | Feb. 09, 2019 | Feb. 10, 2018 | Feb. 09, 2019
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Stock repurchased cumulative, shares |  |  | 422 | 227 | 1,076 | 825 | 145,800
Purchase of treasury stock |  |  |  |  | $ 847,097,000 | $ 527,454,000 | $ 20,265,000,000
Increase in authorization of stock repurchase, value |  | $ 1,250,000,000 |  |  |  |  |
Stock repurchase authorized amended value |  | $ 20,900,000,000 |  |  |  |  |
Remaining value authorized for share repurchases |  |  | $ 634,600,000 |  | 634,600,000 |  | $ 634,600,000
Retained Earnings [Member] |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Retirement of treasury shares |  |  | (1,706,972,000) | $ (918,463,000) | (1,706,972,000) | (918,463,000) |
Additional Paid-in Capital [Member] |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Retirement of treasury shares |  |  | $ (125,442,000) | $ (60,498,000) | $ (125,442,000) | $ (60,498,000) |
Common Stock [Member] |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Share of treasury stock retired |  |  | (2,563) | (1,512) | (2,563) | (1,512) |
Retirement of treasury shares |  |  | $ (26,000) | $ (15,000) | $ (26,000) | $ (15,000) |
Subsequent Events [Member] |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Stock repurchased cumulative, shares | 154,261 |  |  |  |  |  |
Purchase of treasury stock | $ 140,000,000 |  |  |  |  |  |

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