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v3.24.0.1

Summary of significant accounting policies - Narrative (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) financial_institution | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Gross amount of outsourcing assets | $ 563.4 | $ 559.4 |
Outsourcing assets, accumulated amortization | 531.8 | 493.0 |
Gross amount of marketable software | 2,213.9 | 2,174.5 |
Marketable software, accumulated amortization | $ 2,047.7 | 2,009.4 |
Period of recognition in changes in fair value of plan assets | 4 years |  |
Advertising costs incurred | $ 10.7 | $ 8.0 | $ 3.6
Intelligent Processing Solutions Ltd. |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Ownership interest (as a percent) | 51.00% |  |
Number of financial institutions that own remaining interests for which iPSL performs services | financial_institution | 3 |  |
Enterprise Software |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Estimated revenue-producing lives of computer software products from the date of release | 5 years |  |
Remaining Products |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Estimated revenue-producing lives of computer software products from the date of release | 3 years |  |
Minimum | Technology |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Period over which payment is generally received for contracts | 30 days |  |
Maximum | Technology |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Period over which payment is generally received for contracts | 60 days |  |
Buildings | Minimum |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Estimated useful lives | 20 years |  |
Buildings | Maximum |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Estimated useful lives | 50 years |  |
Machinery and office equipment | Minimum |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Estimated useful lives | 4 years |  |
Machinery and office equipment | Maximum |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Estimated useful lives | 7 years |  |
Rental equipment |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Estimated useful lives | 4 years |  |
Internal-use software | Minimum |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Estimated useful lives | 3 years |  |
Internal-use software | Maximum |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Estimated useful lives | 10 years |  |

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