Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 913,595	$ 475,018
Restricted cash	217,275	168,752
Accounts and other receivables (less allowance for doubtful accounts of $46,031 and $32,506, respectively)	1,420,011	1,202,009
Securitized accounts receivable—restricted for securitization investors	811,000	591,000
Prepaid expenses and other current assets	187,820	90,914
Total current assets	3,549,701	2,527,693
Property, plant and equipment, net	180,057	142,504
Goodwill	4,715,823	4,195,150
Other intangibles, net	2,724,957	2,653,233
Investments	32,859	36,200
Other assets	114,962	71,952
Total assets	11,318,359	9,626,732
Current liabilities:
Accounts payable	1,437,314	1,151,432
Accrued expenses	238,472	238,812
Customer deposits	732,171	530,787
Securitization facility	811,000	591,000
Current portion of notes payable and lines of credit	805,512	745,506
Other current liabilities	71,033	38,781
Total current liabilities	4,095,502	3,296,318
Notes payable and other obligations, less current portion	2,902,104	2,521,727
Deferred income taxes	518,912	668,580
Other noncurrent liabilities	125,319	56,069
Total noncurrent liabilities	3,546,335	3,246,376
Commitments and contingencies (Note 13)
Stockholders’ equity:
Common stock, $0.001 par value; 475,000,000 shares authorized; 122,083,059 shares issued and 89,803,982 shares outstanding at December 31, 2017; and 121,259,960 shares issued and 91,836,938 shares outstanding at December 31, 2016	122	121
Additional paid-in capital	2,214,224	2,074,094
Retained earnings	2,958,921	2,218,721
Accumulated other comprehensive loss	(551,857)	(666,403)
Less treasury stock (32,279,077 shares at December 31, 2017; and 29,423,022 shares at December 31, 2016)	(944,888)	(542,495)
Total stockholders’ equity	3,676,522	3,084,038
Total liabilities and stockholders’ equity	$ 11,318,359	$ 9,626,732