Stock Repurchase Program - Additional Information (Detail) (USD $)	3 Months Ended	1 Months Ended
	Nov. 23, 2013	Dec. 17, 2013 Subsequent Event [Member]
Stock Repurchase Program [Line Items]
Stock repurchased during period, shares	678,143	0
Stock repurchased cumulative, shares	135,300,000
Purchase of treasury stock	$ 13,200,000,000
Stock repurchased during period, amount	291,500,000
Stock repurchase authorized during the period, value		750,000,000
Stock repurchase authorized amended value	13,400,000,000	14,150,000,000
Remaining value authorized for share repurchases	176,900,000
Treasury stock acquired repurchase authorization	From January 1, 1998 to November 23, 2013, the Company has repurchased a total of 135.3 million shares at an aggregate cost of $13.2 billion, including 678,143 shares of its common stock at an aggregate cost of $291.5 million during the twelve week period ended November 23, 2013. On December 17, 2013, the Board voted to increase the authorization by $750 million to raise the cumulative share repurchase authorization from $13.40 billion to $14.15 billion.
Authorize to repurchase, shares		$ 926,900,000