Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenues, net	$ 3,427,129	$ 2,833,736	$ 2,388,855
Expenses:
Processing	764,707	559,819	596,363
Selling	309,082	262,118	192,732
General and administrative	584,135	485,830	374,678
Depreciation and amortization	322,282	284,197	254,802
Other operating expense (income), net	282	(784)	(1,985)
Operating income	1,446,641	1,242,556	972,265
Investment loss (gain), net	1,382	(9)	(30,008)
Other expense (income), net	3,003	3,858	(10,055)
Interest expense, net	164,662	113,705	129,803
Loss on extinguishment of debt	1,934	16,194	0
Total other expense	170,981	133,748	89,740
Income before income taxes	1,275,660	1,108,808	882,525
Provision for income taxes	321,333	269,311	178,309
Net income	$ 954,327	$ 839,497	$ 704,216
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	$ 12.62	$ 10.23	$ 8.38
Diluted earnings per share (in dollars per share)	$ 12.42	$ 9.99	$ 8.12
Weighted average shares outstanding:
Basic (in shares)	75,598	82,060	84,005
Diluted (in shares)	76,862	84,061	86,719