Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Consolidated Statements of Income
Sales	$ 6,182,184	$ 5,788,816	$ 5,397,525
Cost of goods sold, including warehouse and distribution expenses	3,084,766	2,951,467	2,776,533
Gross profit	3,097,418	2,837,349	2,620,992
Selling, general and administrative expenses	2,120,025	1,973,381	1,887,316
Former CSK officer clawback	0	(2,798)	0
Legacy CSK DOJ investigation charge	0	0	20,900
Operating income	977,393	866,766	712,776
Other income (expense):
Interest expense	(40,200)	(28,165)	(39,273)
Interest income	2,441	2,245	1,941
Write-off of asset-based revolving credit facility debt issuance costs	0	(21,626)	0
Termination of interest rate swap agreements	0	(4,237)	0
Gain on settlement of note receivable	0	0	11,639
Other, net	1,887	790	2,290
Total other expense	(35,872)	(50,993)	(23,403)
Income before income taxes	941,521	815,773	689,373
Provision for income taxes	355,775	308,100	270,000
Net income	$ 585,746	$ 507,673	$ 419,373
Earnings per share-basic:
Earnings per share - basic	$ 4.83	$ 3.77	$ 3.02
Weighted-average common shares outstanding - basic	121,182	134,667	138,654
Earnings per share-assuming dilution:
Earnings per share - assuming dilution	$ 4.75	$ 3.71	$ 2.95
Weighted-average common shares outstanding - assuming dilution	123,314	136,983	141,992