Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 205,410	$ 248,128	[1]
Accounts receivable, net	153,189	122,989	[1]
Amounts receivable from vendors	51,695	58,185	[1]
Inventory, net	2,295,846	2,276,331	[1]
Other current assets	35,048	27,315	[1]
Total current assets	2,741,188	2,732,948	[1]
Property and equipment, at cost	3,342,371	3,269,570	[1]
Less: accumulated depreciation and amortization	1,098,297	1,057,980	[1]
Net property and equipment	2,244,074	2,211,590	[1]
Notes receivable, less current portion	4,318	5,347	[1]
Goodwill	758,578	758,410	[1]
Other assets, net	41,383	40,892	[1]
Total assets	5,789,541	5,749,187	[1]
Liabilities and shareholders' equity
Accounts payable	1,967,000	1,929,112	[1]
Self-insurance reserves	56,052	54,190	[1]
Accrued payroll	58,958	60,120	[1]
Accrued benefits and withholdings	36,780	42,417	[1]
Deferred income taxes	13,196	19,472	[1]
Income taxes payable	56,004	5,932	[1]
Other current liabilities	160,949	161,400	[1]
Current portion of long-term debt	83	222	[1]
Total current liabilities	2,349,022	2,272,865	[1]
Long-term debt, less current portion	1,095,852	1,095,734	[1]
Deferred income taxes	83,130	79,544	[1]
Other liabilities	189,012	192,737	[1]
Shareholders' equity:
Common stock, $0.01 par value: Authorized shares - 245,000,000 Issued and outstanding shares - 111,041,666 as of March 31, 2013, and 112,963,413 as of December 31, 2012	1,110	1,130	[1]
Additional paid-in capital	1,097,928	1,083,910	[1]
Retained earnings	973,487	1,023,267	[1]
Total shareholders' equity	2,072,525	2,108,307	[1]
Total liabilities and shareholders' equity	$ 5,789,541	$ 5,749,187	[1]

[1] The balance sheet at December 31, 2012, has been derived from the audited consolidated financial statements at that date, but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.