Consolidated Statements of Cash Flows (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating activities:
Net income	$ 57,904	$ 57,286
Adjustments to reconcile net income to cash (used for) provided by operating activities of continuing operations:
Provision for LIFO reserve	11,265	8,433
Depreciation and amortization	17,016	13,896
Share-based compensation expense	3,581	4,633
Provision for losses on accounts and notes receivable	758	1,450
Pension expense		1,340
Pension contributions	(543)	(8,300)
Deferred income tax (benefit) expense	(674)	4,201
Changes in operating assets and liabilities:
Accounts and notes receivable	(33,606)	28,604
Merchandise inventories	(42,762)	(30,622)
Accounts payable	(24,267)	113,988
Net change in other assets and liabilities	(23,321)	(10,900)
Other, net	114	(921)
Cash (used for) provided by operating activities of continuing operations	(34,535)	183,088
Investing activities:
Additions to property and equipment	(8,175)	(15,488)
Additions to computer software and intangible assets	(5,573)	(4,811)
Proceeds from sale of property and equipment	44	1,612
Cash used for investing activities of continuing operations	(13,704)	(18,687)
Financing activities:
Increase (decrease) in drafts payable	74,300	(82,350)
Proceeds from exercise of stock options	7,394	5,602
Excess tax benefits related to share-based compensation	1,761	1,735
Other, net	(4,514)	(4,622)
Repurchases of common stock	(5,086)
Cash dividends paid	(25,496)	(22,324)
Cash provided by (used for) financing activities of continuing operations	48,359	(101,959)
Discontinued operations:
Operating cash flows	(139)	(940)
Net cash used for discontinued operations	(139)	(940)
Net (decrease) increase in cash and cash equivalents	(19)	61,502
Cash and cash equivalents at beginning of period	159,213	96,136
Cash and cash equivalents at end of period	159,194	157,638
Supplemental disclosure of cash flow information:
Income taxes paid, net	42,987	32,201
Interest paid	$ 7,445	$ 6,602