Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating activities
Net income	$ 648,041	$ 565,116	$ 475,511
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	98,383	88,936	89,332
Excess tax benefits from share-based compensation	(11,018)	(5,356)	(3,251)
Gain on sale of property, plant, and equipment	(3,943)	(3,012)	(1,685)
Deferred income taxes	14,751	(2,337)	11,994
Share-based compensation	10,747	7,547	7,016
Changes in operating assets and liabilities:
Trade accounts receivable, net	13,365	(85,011)	(140,562)
Merchandise inventories, net	(25,845)	(19,624)	44,865
Trade accounts payable	220,694	85,766	280,739
Other long-term assets	(45,248)	(12,943)	(48,423)
Other, net	(13,489)	5,845	(36,873)
Changes in operating assets and liabilities	258,397	59,811	203,152
Net cash provided by operating activities	906,438	624,927	678,663
Investing activities
Purchases of property, plant and equipment	(101,987)	(103,469)	(85,379)
Proceeds from sale of property, plant, and equipment	8,504	8,908	3,676
Acquisition of businesses and other investing activities	(558,384)	(136,936)	(90,645)
Net cash used in investing activities	(651,867)	(231,497)	(172,348)
Financing activities
Proceeds from debt	750,000	250,000
Payments on debt	(750,000)	(250,000)
Stock options exercised	(7,043)	(1,049)	9,085
Excess tax benefits from share-based compensation	11,018	5,356	3,251
Dividends paid	(300,983)	(276,369)	(257,898)
Purchase of stock	(81,826)	(122,078)	(75,007)
Net cash used in financing activities	(378,834)	(394,140)	(320,569)
Effect of exchange rate changes on cash	2,304	(4,204)	7,419
Net (decrease) increase in cash and cash equivalents	(121,959)	(4,914)	193,165
Cash and cash equivalents at beginning of year	525,054	529,968	336,803
Cash and cash equivalents at end of year	403,095	525,054	529,968
Supplemental disclosures of cash flow information
Income taxes	381,407	317,748	275,979
Interest	$ 20,416	$ 27,640	$ 28,061