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Accounts Receivable - Changes in Reserves for Credit Losses Related to Accounts Receivable (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Accounts Receivable And Other Assets, Allowance for Credit Loss |  |  |
Balance, beginning of year | $ 52,274 | $ 46,948 | $ 33,387
Provision for credit losses | 78,443 | 65,664 | 66,482
Other | 19,019 | 22,746 | 19,067
Charge-offs | (112,297) | (92,638) | (78,323)
Recoveries of amounts previously charged-off | 10,613 | 9,781 | 6,854
Currency translation | (482) | (227) | (519)
Balance, end of year | 59,147 | 52,274 | $ 46,948
Cumulative Effect, Period of Adoption, Adjustment |  |  |
Accounts Receivable And Other Assets, Allowance for Credit Loss |  |  |
Balance, beginning of year | 11,577 |  |
Balance, end of year |  | 11,577 |
As Reported |  |  |
Accounts Receivable And Other Assets, Allowance for Credit Loss |  |  |
Balance, beginning of year | 63,851 |  |
Balance, end of year |  | 63,851 |
Fleet Solutions |  |  |
Accounts Receivable And Other Assets, Allowance for Credit Loss |  |  |
Balance, beginning of year | 40,620 |  |
Provision for credit losses | 56,620 |  |
Other | 19,019 |  |
Charge-offs | (88,091) |  |
Recoveries of amounts previously charged-off | 10,421 |  |
Currency translation | 1,288 |  |
Balance, end of year | 49,267 | 40,620 |
Fleet Solutions | Cumulative Effect, Period of Adoption, Adjustment |  |  |
Accounts Receivable And Other Assets, Allowance for Credit Loss |  |  |
Balance, beginning of year | 9,390 |  |
Balance, end of year |  | 9,390 |
Fleet Solutions | As Reported |  |  |
Accounts Receivable And Other Assets, Allowance for Credit Loss |  |  |
Balance, beginning of year | 50,010 |  |
Balance, end of year |  | 50,010 |
Travel and Corporate Solutions Segment |  |  |
Accounts Receivable And Other Assets, Allowance for Credit Loss |  |  |
Balance, beginning of year | 3,578 |  |
Provision for credit losses | 21,610 |  |
Other | 0 |  |
Charge-offs | (18,787) |  |
Recoveries of amounts previously charged-off | 175 |  |
Currency translation | 847 |  |
Balance, end of year | 9,610 | 3,578 |
Travel and Corporate Solutions Segment | Cumulative Effect, Period of Adoption, Adjustment |  |  |
Accounts Receivable And Other Assets, Allowance for Credit Loss |  |  |
Balance, beginning of year | 2,187 |  |
Balance, end of year |  | 2,187 |
Travel and Corporate Solutions Segment | As Reported |  |  |
Accounts Receivable And Other Assets, Allowance for Credit Loss |  |  |
Balance, beginning of year | 5,765 |  |
Balance, end of year |  | 5,765 |
Health and Employee Benefit Solutions |  |  |
Accounts Receivable And Other Assets, Allowance for Credit Loss |  |  |
Balance, beginning of year | 8,076 |  |
Provision for credit losses | 213 |  |
Other | 0 |  |
Charge-offs | (5,419) |  |
Recoveries of amounts previously charged-off | 17 |  |
Currency translation | (2,617) |  |
Balance, end of year | 270 | 8,076 |
Health and Employee Benefit Solutions | Cumulative Effect, Period of Adoption, Adjustment |  |  |
Accounts Receivable And Other Assets, Allowance for Credit Loss |  |  |
Balance, beginning of year | 0 |  |
Balance, end of year |  | 0 |
Health and Employee Benefit Solutions | As Reported |  |  |
Accounts Receivable And Other Assets, Allowance for Credit Loss |  |  |
Balance, beginning of year | $ 8,076 |  |
Balance, end of year |  | $ 8,076 |

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