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Stock Repurchase Program - Additional Information (Detail) - USD ($)			8 Months Ended		232 Months Ended
	May 07, 2017	Mar. 21, 2017	May 06, 2017	May 07, 2016	May 06, 2017
Stock Repurchase Program [Line Items]
Stock repurchased cumulative, shares			1,129,821		141,900,000
Purchase of treasury stock			$ 844,183,000	$ 1,082,725,000	$ 17,599,000,000
Repurchased shares of common stock at an aggregate cost			844,200,000
Increase in authorization of stock repurchase, value		$ 750,000,000
Stock repurchase authorized amended value		$ 18,650,000,000
Remaining value authorized for share repurchases			$ 1,051,000,000		$ 1,051,000,000
Share of treasury stock retired			1,800,000	2,100,000
Retained Deficit [Member]
Stock Repurchase Program [Line Items]
Retirement of treasury shares			$ 1,321,000,000	$ 1,424,000,000
Additional Paid-In Capital [Member]
Stock Repurchase Program [Line Items]
Retirement of treasury shares			$ 64,900,000	$ 67,000,000
Subsequent Event [Member]
Stock Repurchase Program [Line Items]
Stock repurchased cumulative, shares	200,280
Repurchased shares of common stock at an aggregate cost	$ 132,600,000

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The increase in the value that is authorized to be repurchased under the stock repurchase program.

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Stock repurchase program.

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The cash outflow to reacquire common stock during the period.

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Amount of decrease of par value, additional paid in capital (APIC) and retained earnings of common and preferred stock retired from treasury when treasury stock is accounted for under the cost method.

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