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v3.19.3.a.u2

Summary of significant accounting policies - Additional Information (Details) $ / shares in Units, $ in Millions |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 27, 2019 USD ($) plan | Dec. 31, 2019 USD ($) institution $ / shares | Sep. 30, 2019 USD ($) $ / shares | Jun. 30, 2019 USD ($) $ / shares | Mar. 31, 2019 USD ($) $ / shares | Dec. 31, 2018 USD ($) $ / shares | Sep. 30, 2018 USD ($) $ / shares | Jun. 30, 2018 USD ($) $ / shares | Mar. 31, 2018 USD ($) $ / shares | Jun. 30, 2020 USD ($) | Dec. 31, 2019 USD ($) institution $ / shares | Dec. 31, 2018 USD ($) $ / shares | Dec. 31, 2017 USD ($) $ / shares
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease to cost of revenue |  |  |  |  |  |  |  |  |  |  | $ (2,282.3) | $ (2,138.7) | $ (2,194.1)
Increase to consolidated net income |  | $ (10.8) | $ (13.2) | $ 26.2 | $ (19.4) | $ 25.0 | $ 6.1 | $ 3.8 | $ 40.6 |  | $ (17.2) | $ 75.5 | $ (65.3)
Increase to diluted earnings per share (in dollars per share) | $ / shares |  | $ (0.17) | $ (0.23) | $ 0.42 | $ (0.38) | $ 0.41 | $ 0.12 | $ 0.07 | $ 0.62 |  | $ (0.31) | $ 1.30 | $ (1.30)
Period of recognition in changes in fair value of plan assets |  |  |  |  |  |  |  |  |  |  | 4 years |  |
Advertising costs incurred |  |  |  |  |  |  |  |  |  |  | $ 3.6 | $ 2.8 | $ 1.6
Technology |  |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease to cost of revenue |  |  |  |  |  |  |  |  |  |  | $ (148.2) | $ (128.2) | $ (160.3)
Intelligent Processing Solutions Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest |  | 51.00% |  |  |  |  |  |  |  |  | 51.00% |  |
Number of financial institutions that own remaining interests for which iPSL performs services | institution |  | 3 |  |  |  |  |  |  |  |  | 3 |  |
Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease to cost of revenue |  |  |  |  |  |  |  |  |  |  | $ 19.8 |  |
Increase to consolidated net income |  |  |  |  |  |  |  |  |  |  | $ 19.8 |  |
Increase to diluted earnings per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 0.35 |  |
Marketable Software |  |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Typical renewal period (on average) |  |  |  |  |  |  |  |  |  |  | 5 years |  |
Finite-lived intangible asset in process |  | $ 67.1 |  |  |  |  |  |  |  |  | $ 67.1 |  |
Finite-lived intangible assets remaining |  | $ 119.7 |  |  |  |  |  |  |  |  | $ 119.7 |  |
Weighted-average remaining life |  |  |  |  |  |  |  |  |  |  | 3 years 2 months 12 days |  |
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 |  |
Enterprise software product as percentage of total marketable software |  |  |  |  |  |  |  |  |  |  | 66.00% |  |
Enterprise Software | Previously Reported |  |  |  |  |  |  |  |  |  |  |  |  |
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 |  |
Remaining Products Classified as Marketable Software |  |  |  |  |  |  |  |  |  |  |  |  |
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 |  |
Pension Plans |  |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Waiver to defer portion of required contributions to U.S. pension plans, number of plans | plan | 2 |  |  |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan, Waiver to Defer Portion of Contributions, Potential Reduction of Required Cash Contribution if Granted | $ 115.0 |  |  |  |  |  |  |  |  |  |  |  |
U.S. Federal Business | Discontinued Operation, Disposed of by Sale | Subsequent Event | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Cash purchase price |  |  |  |  |  |  |  |  |  | $ 1,200.0 |  |  |

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