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Intangible Assets Table (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Amount | $ 1,116.1 |  | $ 1,116.1 |  | $ 1,115.5
Accumulated Amortization | (541.9) |  | (541.9) |  | (499.3)
Net Carrying Amount | 574.2 |  | 574.2 |  | 616.2
Amortization of intangible assets | 21.4 | $ 21.4 | 42.8 | $ 42.9 |
Minimum [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Current Fiscal Year | 80.0 |  | 80.0 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two | 80.0 |  | 80.0 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | 80.0 |  | 80.0 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | 80.0 |  | 80.0 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five | 80.0 |  | 80.0 |  |
Maximum [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Current Fiscal Year | 85.0 |  | 85.0 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two | 85.0 |  | 85.0 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | 85.0 |  | 85.0 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | 85.0 |  | 85.0 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five | 85.0 |  | 85.0 |  |
Capitalized Computer Software, Intangible Asset [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Amount | 52.9 |  | 52.9 |  | 52.2
Accumulated Amortization | (46.2) |  | (46.2) |  | (43.2)
Net Carrying Amount | 6.7 |  | 6.7 |  | 9.0
Customer Platforms - Intangible Assets [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Amount | 856.2 |  | 856.2 |  | 856.2
Accumulated Amortization | (396.4) |  | (396.4) |  | (364.7)
Net Carrying Amount | 459.8 |  | 459.8 |  | 491.5
Customer Relationships - Intangible Assets [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Amount | 53.0 |  | 53.0 |  | 53.0
Accumulated Amortization | (21.4) |  | (21.4) |  | (19.7)
Net Carrying Amount | 31.6 |  | 31.6 |  | 33.3
Technology-Based Intangible Assets [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Amount | 154.0 |  | 154.0 |  | 154.1
Accumulated Amortization | (77.9) |  | (77.9) |  | (71.7)
Net Carrying Amount | $ 76.1 |  | $ 76.1 |  | $ 82.4

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