Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 315,897	$ 398,607
Available-for-sale securities	0	9,290
Receivables, net of allowance for doubtful accounts of $30,352 and $30,945	1,311,192	1,036,070
Deferred tax asset	7,854	5,466
Prepaid expenses and other	41,138	32,335
Total current assets	1,676,081	1,481,768
Property and equipment, net	114,872	114,333
Goodwill	358,791	359,116
Intangible and other assets, net	36,557	32,646
Deferred tax asset	7,496	7,836
Total assets	2,193,797	1,995,699
Current liabilities:
Accounts payable and outstanding checks	758,023	627,561
Accrued expenses:
Compensation and profit-sharing contribution	77,516	96,991
Income taxes and other	54,348	47,055
Total current liabilities	889,887	771,607
Long term liabilities:
Noncurrent income taxes payable	11,588	10,667
Other long term liabilities	3,896	9,357
Total liabilities	905,371	791,631
Stockholders' investment:
Preferred stock, $0.10 par value, 20,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.10 par value, 480,000 shares authorized; 177,039 and 177,060 shares issued; 165,620 and 166,048 shares outstanding	16,562	16,605
Retained earnings	1,724,632	1,613,912
Additional paid-in capital	193,615	178,087
Accumulated other comprehensive loss	(6,890)	(6,425)
Treasury stock at cost (11,419 and 11,012 shares)	(639,493)	(598,111)
Total stockholders' investment	1,288,426	1,204,068
Total liabilities and stockholders' investment	$ 2,193,797	$ 1,995,699