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Derivatives - Narrative (Details) $ in Millions |  |  | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 27, 2019 USD ($) | Nov. 25, 2019 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) Derivative | Dec. 31, 2019 USD ($) | Mar. 09, 2021 USD ($) | Aug. 22, 2017 USD ($) | Mar. 15, 2017 USD ($) | Mar. 30, 2010
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  |  | $ 3,025.0 |  | $ 3,080.0 |  |  |  |  |  |
Accumulated other comprehensive pre-tax gain (loss) to be reclassified into revenue within the next 12 months |  |  |  | 16.5 |  |  |  |  |  |  |  |
Notes Due 2020 |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  | 5.253%
Repayment of unsecured notes | $ 268.8 | $ 56.1 |  |  |  |  |  |  |  |  |  |
3.600% Notes Due 2022 |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  |  | $ 500.0 |  | $ 500.0 | [1] |  |  | $ 100.0 | $ 400.0 |
Stated interest rate (as a percent) |  |  |  | 3.60% |  | 3.60% |  |  |  |  |  |
1.350% Notes Due 2026 |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  | $ 600.0 | $ 600.0 | [1] |  |  |  | $ 600.0 |  |  |
Stated interest rate (as a percent) |  |  | 1.35% | 1.35% |  |  |  |  |  |  |  |
Business Solutions |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange revenues |  |  |  | $ 366.8 |  | $ 311.9 |  | $ 343.1 |  |  |  |
Cash Flow Hedges | Interest rate contracts | 3.600% Notes Due 2022 |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Number of derivative instruments held | Derivative |  |  |  |  |  | 2 |  |  |  |  |  |
Deferred gain on termination of treasury locks |  |  | $ 2.6 |  |  |  |  |  |  |  |  |
Cash payment received for terminated swap agreement |  |  | 3.3 |  |  |  |  |  |  |  |  |
Gain on derivative recognized in Other income/(expense), net |  |  | $ 0.7 |  |  |  |  |  |  |  |  |
Cash Flow Hedges | Interest rate contracts | 3.600% Notes Due 2022 | Interest Rate Swap Contract 1 |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Notional amounts |  |  |  |  |  | $ 100.0 |  |  |  |  |  |
Cash Flow Hedges | Interest rate contracts | 3.600% Notes Due 2022 | Interest Rate Swap Contract 2 |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Notional amounts |  |  |  |  |  | 150.0 |  |  |  |  |  |
Designated as hedges | Foreign currency contracts |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Derivative policy - contract maturity period maximum |  |  |  | 36 months |  |  |  |  |  |  |  |
Derivative policy - targeted weighted-average maturity |  |  |  | 1 year |  |  |  |  |  |  |  |
Maximum remaining maturity of foreign currency derivatives |  |  |  | 24 months |  |  |  |  |  |  |  |
Derivative weighted-average maturity |  |  |  | 1 year |  |  |  |  |  |  |  |
Not designated as hedges | Foreign currency contracts | Business Solutions |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Notional amounts |  |  |  | $ 8.0 |  | $ 8.0 |  |  |  |  |  |
Minimum | Not designated as hedges | Uncollected Settlement Assets and Obligations |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency forward contracts maturity range |  |  |  | 2 days |  |  |  |  |  |  |  |
Maximum | Uncollected Settlement Assets and Obligations |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency forward contracts maturity range |  |  |  | 1 month |  |  |  |  |  |  |  |
Maximum | Foreign Currency Denominated Cash and Other Asset and Other Liability Positions |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency forward contracts maturity range |  |  |  | 1 year |  |  |  |  |  |  |  |
Maximum | Not designated as hedges | Uncollected Settlement Assets and Obligations |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency forward contracts maturity range |  |  |  | 1 month |  |  |  |  |  |  |  |
Maximum | Not designated as hedges | Foreign currency contracts | Business Solutions |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency forward contracts maturity range |  |  |  | 1 year |  |  |  |  |  |  |  |
Maximum | Not designated as hedges | Foreign Currency Denominated Cash and Other Asset and Other Liability Positions |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency forward contracts maturity range |  |  |  | 1 year |  |  |  |  |  |  |  |
[1] | See the Term Loan Facility and Notes sections below for further discussion of the borrowings and repayments of the unsecured notes and term loan made in 2021.

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