Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements of Income
Sales	$ 5,788,816	$ 5,397,525	$ 4,847,062
Cost of goods sold, including warehouse and distribution expenses	2,951,467	2,776,533	2,520,534
Gross profit	2,837,349	2,620,992	2,326,528
Selling, general and administrative expenses	1,973,381	1,887,316	1,788,909
Former CSK officer clawback	(2,798)	0	0
Legacy CSK DOJ investigation charge	0	20,900	0
Operating income	866,766	712,776	537,619
Other income (expense):
Interest expense	(28,165)	(39,273)	(45,176)
Interest income	2,245	1,941	1,543
Write-off of asset-based revolving credit facility debt issuance costs	(21,626)	0	0
Termination of interest rate swap agreements	(4,237)	0	0
Gain on settlement of note receivable	0	11,639	0
Other, net	790	2,290	2,912
Total other expense	(50,993)	(23,403)	(40,721)
Income before income taxes	815,773	689,373	496,898
Provision for income taxes	308,100	270,000	189,400
Net income	$ 507,673	$ 419,373	$ 307,498
Earnings per share-basic:
Earnings per share - basic	$ 3.77	$ 3.02	$ 2.26
Weighted-average common shares outstanding - basic	134,667	138,654	136,230
Earnings per share-assuming dilution:
Earnings per share - assuming dilution	$ 3.71	$ 2.95	$ 2.23
Weighted-average common shares outstanding - assuming dilution	136,983	141,992	137,882