Unaudited Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenues, net	$ 970,892	$ 893,000	$ 2,820,399	$ 2,543,519
Expenses:
Processing	208,217	203,315	618,449	563,097
Selling	85,954	74,005	253,958	230,218
General and administrative	147,839	149,294	461,879	440,262
Depreciation and amortization	84,750	77,213	252,658	232,489
Other operating, net	(845)	3	633	82
Operating income	444,977	389,170	1,232,822	1,077,371
Other expenses:
Investment loss (gain)	30	174	(142)	519
Other (income) expense, net	(13,432)	3,688	(15,110)	6,187
Interest expense, net	88,285	45,410	256,566	90,510
Loss on extinguishment of debt	0	0	0	1,934
Total other expense	74,883	49,272	241,314	99,150
Income before income taxes	370,094	339,898	991,508	978,221
Provision for income taxes	98,598	91,013	265,475	249,213
Net income	$ 271,496	$ 248,885	$ 726,033	$ 729,008
Basic earnings per share (in dollars per share)	$ 3.71	$ 3.34	$ 9.87	$ 9.55
Diluted earnings per share (in dollars per share)	$ 3.64	$ 3.29	$ 9.72	$ 9.38
Weighted average shares outstanding:
Basic (in shares)	73,165	74,461	73,523	76,311
Diluted (in shares)	74,604	75,558	74,733	77,687