Summary of Significant Accounting Policies - Summary of Adjustment to Correct Cumulative Effect of Error has been Reflected on Company's Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Merchandise inventories, net	$ 2,602,560	$ 2,440,111
Total current assets	4,820,131	4,754,710
Deferred tax asset	279,463	261,608
Other assets	643,263	406,477
Total assets	6,807,061	6,202,774	5,788,227	5,327,872	5,109,533
Other accrued expenses	359,395	331,582
Income taxes payable	4,354	21,081
Total current liabilities	2,487,638	2,012,548
Other long-term liabilities	488,256	442,914
Retained earnings	3,344,538	3,070,394
Total parent equity	2,997,887	2,744,007
Total equity	3,008,179	2,753,591	2,763,486	2,590,144
Total liabilities and equity	6,807,061	6,202,774
As Previously Reported [Member]
Merchandise inventories, net		2,261,997
Total current assets		4,576,596
Deferred tax asset		250,906
Other assets		272,110
Total assets		5,879,591
Other accrued expenses		116,921
Income taxes payable		35,267
Total current liabilities		1,812,073
Other long-term liabilities		280,978
Retained earnings		3,109,622
Total parent equity		2,783,235
Total equity		2,792,819
Total liabilities and equity		5,879,591
Adjustment [Member]
Merchandise inventories, net		178,114
Total current assets		178,114
Deferred tax asset		10,702
Other assets		134,367
Total assets		323,183
Other accrued expenses		214,661
Income taxes payable		(14,186)
Total current liabilities		200,475
Other long-term liabilities		161,936
Retained earnings	(39,228)	(39,228)		(39,228)
Total parent equity		(39,228)
Total equity		(39,228)
Total liabilities and equity		$ 323,183