Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 477,069	$ 338,105
Restricted cash	135,144	48,244
Accounts receivable (less allowance for doubtful accounts of $23,842 and $22,416, respectively)	673,797	573,351
Securitized accounts receivable-restricted for securitization investors	675,000	349,000
Prepaid expenses and other current assets	74,889	40,062
Deferred income taxes	101,451	4,750
Total current assets	2,137,350	1,353,512
Property and equipment	135,062	111,100
Less accumulated depreciation and amortization	(61,499)	(57,144)
Net property and equipment	73,563	53,956
Goodwill	3,811,862	1,552,725
Other intangibles, net	2,437,367	871,263
Equity method investment	141,933
Other assets	72,431	100,779
Total assets	8,674,506	3,932,235
Current liabilities:
Accounts payable	716,676	467,202
Accrued expenses	178,375	114,870
Customer deposits	492,257	182,541
Securitization facility	675,000	349,000
Current portion of notes payable and lines of credit	749,764	662,439
Other current liabilities	84,546	132,846
Total current liabilities	2,896,618	1,908,898
Notes payable and other obligations, less current portion	2,168,953	474,939
Deferred income taxes	815,169	249,504
Other noncurrent liabilities	40,629	55,001
Total noncurrent liabilities	3,024,751	779,444
Commitments and contingencies (Note 13)
Stockholders' equity:
Preferred stock, $0.001 par value; 25,000,000 shares authorized and no shares issued and outstanding at December 31, 2014 and 2013
Common stock, $0.001 par value; 475,000,000 shares authorized, 119,771,155 shares issued and 91,662,043 shares outstanding at December 31, 2014; and 118,206,262 shares issued and 82,471,770 shares outstanding at December 31, 2013	120	117
Additional paid-in capital	1,852,442	631,667
Retained earnings	1,403,905	1,035,198
Accumulated other comprehensive loss	(156,933)	(47,426)
Less treasury stock (28,109,112 shares at December 31, 2014 and 35,734,492 shares at December 31, 2013)	(346,397)	(375,663)
Total stockholders' equity	2,753,137	1,243,893
Total liabilities and stockholders' equity	$ 8,674,506	$ 3,932,235