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Stock Repurchase Program - Additional Information (Detail) - USD ($) |  | 1 Months Ended | 3 Months Ended | 5 Months Ended | 6 Months Ended | 266 Months Ended
--- | --- | --- | --- | --- | --- | ---
Oct. 07, 2019 | Mar. 13, 2020 | Feb. 15, 2020 | Feb. 09, 2019 | Feb. 09, 2019 | Feb. 15, 2020 | Feb. 15, 2020
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Stock repurchased cumulative, shares |  |  | 267,000 | 422,000 | 1,076,000 | 669,967 | 147,500,000
Purchase of treasury stock |  |  |  |  | $ 847,097,000 | $ 764,846,000 | $ 22,188,000,000
Increase in authorization of stock repurchase, value | $ 1,250,000,000 |  |  |  |  |  |
Stock repurchase authorized | $ 23,150,000,000 |  |  |  |  |  |
Remaining value authorized for share repurchases |  |  | $ 961,900,000 |  |  | 961,900,000 | $ 961,900,000
Retirement of treasury shares |  |  | 0 | $ 0 | 0 | 0 |
Retained Deficit [Member] |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Retirement of treasury shares |  |  | 1,878,595,000 | 1,706,972,000 | 1,706,972,000 | 1,878,595,000 |
Additional Paid-In Capital [Member] |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Retirement of treasury shares |  |  | $ 99,686,000 | $ 125,442,000 | $ 125,442,000 | $ 99,686,000 |
Common Stock [Member] |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Share of treasury stock retired |  |  | 1,912,000 | 2,563,000 | 2,563,000 | 1,912,000 |
Retirement of treasury shares |  |  | $ 19,000 | $ 26,000 | $ 26,000 | $ 19,000 |
Subsequent Events [Member] |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Stock repurchased cumulative, shares |  | 156,035 |  |  |  |  |
Purchase of treasury stock |  | $ 166,100,000 |  |  |  |  |

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