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Segments - Segments Results (Parenthetical) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Operating income: |  |  |
Total operating income | $ 1,123.1 | $ 967.3 | $ 934.0
Consumer-to-Consumer | Change in Accounting Method |  |  |
Operating income: |  |  |
Total operating income |  |  | (49.6)
Other | Change in Accounting Method |  |  |
Operating income: |  |  |
Total operating income |  |  | 49.6
Operating Segments |  |  |
Operating income: |  |  |
Total operating income | 1,123.1 | 1,004.1 | 1,049.5
Operating Segments | Consumer-to-Consumer |  |  |
Operating income: |  |  |
Total operating income | 977.6 | 924.7 | 975.4
Operating Segments | Other |  |  |
Operating income: |  |  |
Total operating income | $ 50.0 | $ 55.0 | 27.3
Operating Segments | Other | Speedpay | Divestitures |  |  |
Revenues: |  |  |
Revenues |  |  | 125.4
Operating income: |  |  |
Operating expenses |  |  | 98.2
Operating Segments | Other | Paymap | Divestitures |  |  |
Revenues: |  |  |
Revenues |  |  | 5.3
Operating income: |  |  |
Operating expenses |  |  | $ 2.2

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