Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Revenues, net	$ 1,831,546	$ 1,702,865	$ 1,199,390
Expenses:
Merchant commissions	104,345	108,257	96,254
Processing	355,414	331,073	173,337
Selling	131,443	109,075	75,527
General and administrative	283,625	297,715	205,963
Depreciation and amortization	203,256	193,453	112,361
Other operating, net	(690)	(4,242)	(29,501)
Operating income	754,153	667,534	565,449
Equity method investment loss	36,356	57,668	8,586
Other expense (income), net	2,982	2,523	(700)
Interest expense, net	71,896	71,339	28,856
Loss on early extinguishment of debt	0	0	15,764
Total other expense	111,234	131,530	52,506
Income before income taxes	642,919	536,004	512,943
Provision for income taxes	190,534	173,573	144,236
Net income	$ 452,385	$ 362,431	$ 368,707
Earnings per share:
Basic earnings per share (in usd per share)	$ 4.89	$ 3.94	$ 4.37
Diluted earnings per share (in usd per share)	$ 4.75	$ 3.85	$ 4.24
Weighted average shares outstanding:
Basic weighted average shares outstanding (in shares)	92,597	92,023	84,317
Diluted weighted average shares outstanding (in shares)	95,213	94,139	86,982