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Goodwill and Other Intangible Assets - Schedule of Changes In Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Goodwill [Roll Forward] |  |
Gross goodwill, beginning of period | $ 2,752,313 | $ 2,455,223
Current year acquisition | 168,424 | 291,884
Measurement period adjustments | 78,426 |
Current year sale of subsidiary |  | (13,161)
Foreign currency translation | (26,931) | 18,367
Gross goodwill, end of period | 2,972,232 | 2,752,313
Accumulated Impairment [Roll Forward] |  |
Accumulated impairment, beginning of period | (64,175) | (14,022)
Sale of subsidiary |  | 3,225
WEX Fleet Europe impairment |  | (53,378)
Accumulated impairment, end of period | (64,175) | (64,175)
Net goodwill, beginning of period | 2,688,138 | 2,441,201
Net goodwill, end of period | 2,908,057 | 2,688,138
Fleet Solutions Segment |  |
Goodwill [Roll Forward] |  |
Gross goodwill, beginning of period | 1,392,711 | 1,378,107
Current year acquisition | 0 | 0
Measurement period adjustments | 0 |
Current year sale of subsidiary |  | (3,225)
Foreign currency translation | (12,139) | 17,829
Gross goodwill, end of period | 1,380,572 | 1,392,711
Accumulated Impairment [Roll Forward] |  |
Accumulated impairment, beginning of period | (54,240) | (4,087)
Sale of subsidiary |  | 3,225
WEX Fleet Europe impairment | (53,400) | (53,378)
Accumulated impairment, end of period | (54,240) | (54,240)
Net goodwill, beginning of period | 1,338,471 | 1,374,020
Net goodwill, end of period | 1,326,332 | 1,338,471
Travel and Corporate Solutions Segment |  |
Goodwill [Roll Forward] |  |
Gross goodwill, beginning of period | 751,398 | 455,007
Current year acquisition | 0 | 291,884
Measurement period adjustments | 78,426 |
Current year sale of subsidiary |  | 0
Foreign currency translation | (14,792) | 4,507
Gross goodwill, end of period | 815,032 | 751,398
Accumulated Impairment [Roll Forward] |  |
Accumulated impairment, beginning of period | (9,935) | (9,935)
Sale of subsidiary |  | 0
WEX Fleet Europe impairment |  | 0
Accumulated impairment, end of period | (9,935) | (9,935)
Net goodwill, beginning of period | 741,463 | 445,072
Net goodwill, end of period | 805,097 | 741,463
Health and Employee Benefit Solutions Segment |  |
Goodwill [Roll Forward] |  |
Gross goodwill, beginning of period | 608,204 | 622,109
Current year acquisition | 168,424 | 0
Measurement period adjustments | 0 |
Current year sale of subsidiary |  | (9,936)
Foreign currency translation | 0 | (3,969)
Gross goodwill, end of period | 776,628 | 608,204
Accumulated Impairment [Roll Forward] |  |
Accumulated impairment, beginning of period | 0 | 0
Sale of subsidiary |  | 0
WEX Fleet Europe impairment |  | 0
Accumulated impairment, end of period |  | 0
Net goodwill, beginning of period | 608,204 | 622,109
Net goodwill, end of period | $ 776,628 | $ 608,204

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