CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues
Total revenues	$ 621.3	$ 598.2	$ 1,233.3	$ 1,115.8
Cost of services
Processing costs	149.7	137.4	295.3	269.9
Service fees	17.9	14.9	36.2	30.6
Provision for credit losses	22.7	42.2	68.1	67.8
Operating interest	19.5	3.2	32.3	5.5
Depreciation and amortization	25.2	26.6	50.4	52.6
Total cost of services	235.0	224.3	482.3	426.5
General and administrative	106.2	83.5	195.1	162.1
Sales and marketing	78.9	80.4	158.8	154.4
Depreciation and amortization	41.8	38.9	83.4	79.3
Operating income	159.4	171.1	313.7	293.4
Financing interest expense	(42.4)	(31.8)	(80.8)	(61.5)
Change in fair value of contingent consideration	(1.2)	(88.2)	(3.0)	(104.8)
Net foreign currency loss	(0.2)	(19.4)	(1.6)	(14.4)
Net unrealized gain (loss) on financial instruments	2.2	16.9	(12.3)	66.7
Income before income taxes	117.8	48.6	216.0	179.4
Income tax expense	22.5	14.5	52.7	56.5
Net income	95.3	34.1	163.3	122.9
Less: Net income from non-controlling interests	0.0	0.0	0.0	0.3
Net income attributable to WEX Inc.	95.3	34.1	163.3	122.6
Change in value of redeemable non-controlling interest	0.0	0.0	0.0	34.2
Net income attributable to shareholders	$ 95.3	$ 34.1	$ 163.3	$ 156.9
Net income attributable to shareholders per share:
Basic (in dollars per share)	$ 2.22	$ 0.76	$ 3.80	$ 3.50
Diluted (in dollars per share)	$ 2.20	$ 0.76	$ 3.76	$ 3.47
Weighted average common shares outstanding:
Basic (in shares)	42.9	44.8	43.0	44.9
Diluted (in shares)	43.4	45.1	43.5	45.2
Payment processing revenue
Revenues
Total revenues	$ 300.5	$ 312.3	$ 588.6	$ 551.8
Account servicing revenue
Revenues
Total revenues	152.9	137.6	313.6	277.6
Finance fee revenue
Revenues
Total revenues	76.4	85.3	157.1	163.9
Other revenue
Revenues
Total revenues	$ 91.5	$ 63.0	$ 174.0	$ 122.5