Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Statement of Cash Flows [Abstract]
Net income	$ 52,516	$ 82,941
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	41,597	37,347
Loss on early retirement of debt	14,890	0
Share-based compensation expense	6,136	5,162
Provision for losses on accounts and notes receivable	(356)	179
Deferred income tax (benefit) expense	(7,387)	8,424
Changes in operating assets and liabilities:
Accounts and notes receivable	(21,456)	(20,703)
Merchandise inventories	(63,883)	(23,690)
Accounts payable	54,634	93,950
Net change in other assets and liabilities	3,131	(21,285)
Other, net	1,322	(1,159)
Cash provided by operating activities	81,144	161,166
Investing activities:
Additions to property and equipment	(36,169)	(25,144)
Additions to computer software and intangible assets	(17,988)	(20,361)
Proceeds from sale of investment	1,937	0
Proceeds from sale of property and equipment	151	2,020
Cash used for investing activities	(52,069)	(43,485)
Financing activities:
Long-term debt borrowings	547,693	0
Cash dividends paid	(47,335)	(45,587)
Repurchases of common stock	(9,934)	(15,701)
Excess tax benefits related to share-based compensation	514	733
Proceeds from exercise of stock options	1,180	4,821
Purchase of noncontrolling interest	(1,500)	0
Debt issuance costs	(4,178)	0
Other, net	(5,671)	(6,769)
Cash provided by (used for) financing activities	480,769	(62,503)
Effect of exchange rate changes on cash and cash equivalents	(1,602)	723
Net increase in cash and cash equivalents	508,242	55,901
Cash and cash equivalents at beginning of period	101,905	97,888
Cash and cash equivalents at end of period	610,147	153,789
Supplemental disclosure of cash flow information:
Income taxes paid, net	65,140	51,567
Interest paid	$ 8,417	$ 7,926