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Revenue - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | $ 314,149 | $ 236,824 | $ 580,461 | $ 476,539
Total revenues | 441,807 | 370,798 | 823,683 | 724,826
Fleet Solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 146,962 | 128,804 | 278,156 | 261,290
Total revenues | 267,314 | 241,412 | 500,096 | 471,777
Travel and corporate solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 88,683 | 61,490 | 160,371 | 116,853
Total revenues | 91,350 | 75,764 | 172,998 | 142,543
Health and Employee Benefit Solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 78,504 | 46,530 | 141,934 | 98,396
Total revenues | 83,143 | 53,622 | 150,589 | 110,506
Payment processing revenue |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 214,826 | 178,738 | 401,624 | 347,192
Payment processing revenue | Fleet Solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 120,717 | 112,895 | 228,125 | 219,873
Payment processing revenue | Travel and corporate solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 77,273 | 51,289 | 137,271 | 96,066
Payment processing revenue | Health and Employee Benefit Solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 16,836 | 14,554 | 36,228 | 31,253
Account servicing revenue |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 72,022 | 41,081 | 126,669 | 86,041
Total revenues | 34,870 | 37,635 | 67,309 | 71,379
Account servicing revenue | Fleet Solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 6,636 | 5,384 | 13,436 | 13,850
Total revenues | 34,870 | 37,635 | 67,309 | 71,379
Account servicing revenue | Travel and corporate solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 10,717 | 8,995 | 21,302 | 18,464
Total revenues | 0 | 0 | 0 | 0
Account servicing revenue | Health and Employee Benefit Solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 54,669 | 26,702 | 91,931 | 53,727
Total revenues | 0 | 0 | 0 | 0
Finance fee revenue |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Total revenues | 62,912 | 51,553 | 109,285 | 100,434
Finance fee revenue | Fleet Solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Total revenues | 62,385 | 45,188 | 108,249 | 88,792
Finance fee revenue | Travel and corporate solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Total revenues | 496 | 228 | 853 | 487
Finance fee revenue | Health and Employee Benefit Solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Total revenues | 31 | 6,137 | 183 | 11,155
Other revenue |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 27,301 | 17,005 | 52,168 | 43,306
Total revenues | 29,876 | 44,786 | 66,628 | 76,474
Other revenue | Fleet Solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 19,609 | 10,525 | 36,595 | 27,567
Total revenues | 23,097 | 29,785 | 46,382 | 50,316
Other revenue | Travel and corporate solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 693 | 1,206 | 1,798 | 2,323
Total revenues | 2,171 | 14,046 | 11,774 | 25,203
Other revenue | Health and Employee Benefit Solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Topic 606 revenues | 6,999 | 5,274 | 13,775 | 13,416
Total revenues | 4,608 | 955 | 8,472 | 955
Total non-Topic 606 revenues |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Total revenues | 127,658 | 133,974 | 243,222 | 248,287
Total non-Topic 606 revenues | Fleet Solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Total revenues | 120,352 | 112,608 | 221,940 | 210,487
Total non-Topic 606 revenues | Travel and corporate solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Total revenues | 2,667 | 14,274 | 12,627 | 25,690
Total non-Topic 606 revenues | Health and Employee Benefit Solutions |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Total revenues | $ 4,639 | $ 7,092 | $ 8,655 | $ 12,110

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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