Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents	$ 473,646	$ 250,560	[1]
Accounts receivable, net	162,020	143,900	[1]
Amounts receivable from suppliers	69,545	69,311	[1]
Inventory	2,527,982	2,554,789	[1]
Other current assets	40,928	48,418	[1]
Total current assets	3,274,121	3,066,978	[1]
Property and equipment, at cost	4,080,350	3,993,509	[1]
Less: accumulated depreciation and amortization	1,381,502	1,334,949	[1]
Net property and equipment	2,698,848	2,658,560	[1]
Notes receivable, less current portion	12,414	13,349	[1]
Goodwill	756,384	756,384	[1]
Other assets, net	43,943	45,030	[1]
Total assets	6,785,710	6,540,301	[1]
Liabilities and shareholders' equity
Accounts payable	2,470,749	2,417,167	[1]
Self-insurance reserves	67,676	64,882	[1]
Accrued payroll	75,059	78,442	[1]
Accrued benefits and withholdings	42,413	62,946	[1]
Deferred income taxes	16,651	17,258	[1]
Income taxes payable	78,939	0	[1]
Other current liabilities	200,888	189,836	[1]
Current portion of long-term debt	6	25	[1]
Total current liabilities	2,952,381	2,830,556	[1]
Long-term debt, less current portion	1,396,741	1,396,615	[1]
Deferred income taxes	81,330	85,164	[1]
Other liabilities	211,758	209,548	[1]
Shareholders' equity:
Common stock, $0.01 par value: Authorized shares - 245,000,000 Issued and outstanding shares - 101,347,744 as of March 31, 2015, and 101,602,935 as of December 31, 2014	1,013	1,016	[1]
Additional paid-in capital	1,234,133	1,194,929	[1]
Retained earnings	908,354	822,473	[1]
Total shareholders' equity	2,143,500	2,018,418	[1]
Total liabilities and shareholders' equity	$ 6,785,710	$ 6,540,301	[1]

[1] The balance sheet at December 31, 2014, has been derived from the audited consolidated financial statements at that date, but does not include all of the information and footnotes required by United States generally accepted accounting principles for complete financial statements.