Stock Repurchase Program - Additional Information (Detail) (USD $)	1 Months Ended		3 Months Ended	1 Months Ended
	Nov. 17, 2012	Sep. 28, 2012	Nov. 17, 2012	Dec. 13, 2012 Subsequent Event [Member]
Stock Repurchase Program [Line Items]
Stock Repurchased Authorized Value		$ 11,900,000,000
Stock Repurchased Cumulative	132,000,000			153,489
Stock Repurchased During Period, Shares			854,668
Purchase of treasury stock			317,300,000
Remaining Value Authorized For Share Repurchases	788,400,000		788,400,000
Stock repurchase authorized during the period, value		750,000,000
Stock repurchase authorized amended value		12,650,000,000
Treasury stock acquired repurchase authorization			From January 1, 1998 to November 17, 2012, the Company has repurchased a total of 132.0 million shares at an aggregate cost of $11.9 billion, including 854,668 shares of its common stock at an aggregate cost of $317.3 million during the twelve week period ended November 17, 2012. On September 28, 2012, the Board voted to increase the authorization by $750 million to raise the cumulative share repurchase authorization from $11.90 billion to $12.65 billion. Considering the cumulative repurchases as of November 17, 2012, the Company had $788.4 million remaining under the Board's authorization to repurchase its common stock. Subsequent to November 17, 2012, the Company has repurchased 153,489 shares of its common stock at an aggregate cost of $57.7 million.
Stock Repurchased During Period, Amount				$ 57,700,000