Unaudited Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenues, net	$ 893,000	$ 755,477	$ 2,543,519	$ 2,031,481
Expenses:
Processing	203,315	149,564	563,097	388,286
Selling	74,005	71,204	230,218	186,511
General and administrative	149,294	121,785	440,262	345,155
Depreciation and amortization	77,213	74,237	232,489	209,184
Other operating, net	3	0	82	81
Operating income	389,170	338,687	1,077,371	902,264
Other expenses:
Investment loss (gain)	174	0	519	(9)
Other expense (income), net	3,688	1,532	6,187	(2,547)
Interest expense, net	45,410	29,033	90,510	92,269
Loss on extinguishment of debt	0	0	1,934	6,230
Total other expense	49,272	30,565	99,150	95,943
Income before income taxes	339,898	308,122	978,221	806,321
Provision for income taxes	91,013	74,115	249,213	191,828
Net income	$ 248,885	$ 234,007	$ 729,008	$ 614,493
Basic earnings per share (in dollars per share)	$ 3.34	$ 2.86	$ 9.55	$ 7.42
Diluted earnings per share (in dollars per share)	$ 3.29	$ 2.80	$ 9.38	$ 7.24
Weighted average shares outstanding:
Basic (in shares)	74,461	81,836	76,311	82,811
Diluted (in shares)	75,558	83,716	77,687	84,917