Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 300,061		$ 285,159
Restricted cash	52,186		55,762
Accounts receivable (less allowance for doubtful accounts of $19,995 and $15,315, respectively)	578,818		481,791
Securitized accounts receivable-restricted for securitization investors	355,000		280,000
Prepaid expenses and other current assets	25,608		15,416
Deferred income taxes	6,296		4,797
Total current assets	1,317,969		1,122,925
Property and equipment	117,008		93,380
Less accumulated depreciation and amortization	(70,466)		(60,656)
Net property and equipment	46,542		32,724
Goodwill	923,715		756,597
Other intangibles, net	465,785		385,607
Other assets	88,110		45,834
Total assets	2,842,121		2,343,687
Current liabilities:
Accounts payable	533,113		478,882
Accrued expenses	60,697		41,565
Customer deposits	177,952		180,269
Securitization facility	355,000	[1]	280,000	[1]
Current portion of notes payable and other obligations	228,639		140,354
Total current liabilities	1,355,401		1,121,070
Notes payable and other obligations, less current portion	278,863		278,429
Deferred income taxes	172,789		132,752
Total noncurrent liabilities	451,652		411,181
Commitments and contingencies
Stockholders' equity:
Common stock, $0.001 par value; 475,000,000 shares authorized, 116,266,406 shares issued and 84,384,736 shares outstanding at September 30, 2012; and 475,000,000 shares authorized, 113,741,883 shares issued and 81,860,213 shares outstanding at December 31, 2011	116		114
Additional paid-in capital	525,056		466,203
Retained earnings	690,626		534,498
Accumulated other comprehensive loss	(5,067)		(13,716)
Less treasury stock (31,881,670 shares at September 30, 2012 and December 31, 2011)	(175,663)		(175,663)
Total stockholders' equity	1,035,068		811,436
Total liabilities and stockholders' equity	$ 2,842,121		$ 2,343,687

[1] The Company is party to a receivables purchase agreement (Securitization Facility) that was amended and restated for the fourth time as of October 29, 2007 and which has been amended seven times since then to add or remove purchasers, extend the facility termination date and remove all financial covenants. The current purchase limit under the Securitization Facility is $500 million. The Securitization Facility was amended for the seventh time on February 6, 2012 to add a new purchaser and extend the facility termination date to February 4, 2013. There is a program fee equal to the Commercial Paper Rate of 0.27%, plus 0.75% as of September 30, 2012. The unused facility fee is payable at a rate of 0.35% per annum as of September 30, 2012. The Securitization Facility provides for certain termination events, which includes nonpayment, upon the occurrence of which the administrator may declare the facility termination date to have occurred, may exercise certain enforcement rights with respect to the receivables, and may appoint a successor servicer, among other things.