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Settlement Assets and Obligations - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2022 | Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Receivables from agents, business solutions customers, and others, net | $ 1,265.3 | $ 1,265.3 | $ 1,175.1
Advances to agents | 1,277.2 | $ 1,277.2 | 1,198.8
Variable rate demand notes, maximum maturity year |  | 2061 |
Due after 1 year through 5 years | 539.4 | $ 539.4 |
Due after 5 years through 10 years | 394.8 | 394.8 |
Due after 10 years | 186.4 | 186.4 |
Other Assets |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Advances to agents | 147.1 | 147.1 | 146.9
Receivables from agents and others |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Receivables from agents, business solutions customers, and others, net | 1,243.3 | 1,243.3 | 1,125.9
Receivables from Business Solutions customers |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Receivables from agents, business solutions customers, and others, net | 22.0 | 22.0 | $ 49.2
State and municipal variable rate demand notes |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Due after 1 year through 5 years | 10.0 | 10.0 |
Due after 5 years through 10 years | 10.0 | 10.0 |
Due after 10 years | 77.5 | 77.5 |
State and municipal debt securities |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Impairment of securities recorded as revenues | $ 4.6 | $ 4.6 |

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