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Acquisitions and Other Investments - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions | 4 Months Ended | 6 Months Ended | 8 Months Ended | 10 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 31, 2023 | Jun. 30, 2024 | Jun. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023
Less: |  |  |  |  |
Goodwill | $ 3,015.7 | $ 3,006.2 | $ 3,006.2 | $ 3,006.2 | $ 3,015.7
Payzer |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash consideration transferred, net in cash and restricted cash acquired |  | 244.0 |  |  | 244.0
Less: |  |  |  |  |
Accounts receivable | 2.4 | 2.4 | 2.4 | 2.4 | 2.4
Other current and long-term assets | 1.4 | 1.4 | 1.4 | 1.4 | 1.4
Accrued expenses and other current liabilities | (1.8) | (1.8) | (1.8) | (1.8) | (1.8)
Measurement Period Adjustments, deferred tax liability |  | 3.0 |  |  |
Deferred tax liability | (6.5) | (3.5) | (3.5) | (3.5) | (6.5)
Contingent/deferred consideration | (7.1) | (7.1) | (7.1) | (7.1) | (7.1)
Other liabilities | (0.9) | (0.9) | (0.9) | (0.9) | (0.9)
Measurement Period Adjustments, goodwill |  | (3.0) |  |  |
Goodwill | 193.0 | 190.0 | 190.0 | 190.0 | 193.0
Cash acquired from acquisition |  |  | $ 4.5 |  |
Weighted average life (in years) |  |  | 3 years 10 months 24 days |  |
Payzer | Customer relationships |  |  |  |  |
Less: |  |  |  |  |
Intangible assets | 40.4 | 40.4 | $ 40.4 | 40.4 | 40.4
Weighted average life (in years) |  |  | 4 years 8 months 12 days |  |
Payzer | Developed technology |  |  |  |  |
Less: |  |  |  |  |
Intangible assets | 17.2 | 17.2 | $ 17.2 | 17.2 | 17.2
Weighted average life (in years) |  |  | 2 years 4 months 24 days |  |
Payzer | Strategic partner relationships |  |  |  |  |
Less: |  |  |  |  |
Intangible assets | 4.5 | 4.5 | $ 4.5 | 4.5 | 4.5
Weighted average life (in years) |  |  | 2 years 6 months |  |
Payzer | Trademarks |  |  |  |  |
Less: |  |  |  |  |
Intangible assets | 1.4 | 1.4 | $ 1.4 | 1.4 | 1.4
Weighted average life (in years) |  |  | 2 years 9 months 18 days |  |
Ascensus Acquired Entities |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash consideration transferred, net in cash and restricted cash acquired | 158.0 | 158.9 |  |  |
Measurement period adjustments, cash consideration |  | 0.9 |  |  |
Less: |  |  |  |  |
Accounts receivable | 7.3 | 7.3 | $ 7.3 | 7.3 | 7.3
Other assets | 3.8 | 3.8 | 3.8 | 3.8 | 3.8
Accrued expenses and other current liabilities | (6.5) | (6.5) | (6.5) | (6.5) | (6.5)
Restricted cash payable | (25.7) | (25.7) | (25.7) | (25.7) | (25.7)
Other liabilities | (2.7) | (2.7) | (2.7) | (2.7) | (2.7)
Measurement Period Adjustments, goodwill |  | 0.9 |  |  |
Goodwill | 85.9 | 86.8 | 86.8 | 86.8 | 85.9
Cash acquired from acquisition |  |  |  | $ 26.7 |
Weighted average life (in years) |  |  |  | 4 years 4 months 24 days |
Ascensus Acquired Entities | Customer relationships |  |  |  |  |
Less: |  |  |  |  |
Intangible assets | 52.1 | 52.1 | 52.1 | $ 52.1 | 52.1
Weighted average life (in years) |  |  |  | 5 years 4 months 24 days |
Ascensus Acquired Entities | Developed technology |  |  |  |  |
Less: |  |  |  |  |
Intangible assets | 6.6 | 6.6 | 6.6 | $ 6.6 | 6.6
Weighted average life (in years) |  |  |  | 2 years 2 months 12 days |
Ascensus Acquired Entities | Strategic partner relationships |  |  |  |  |
Less: |  |  |  |  |
Intangible assets | 14.0 | 14.0 | 14.0 | $ 14.0 | 14.0
Weighted average life (in years) |  |  |  | 1 year 2 months 12 days |
Ascensus Acquired Entities | Custodial Rights |  |  |  |  |
Less: |  |  |  |  |
Intangible assets | $ 23.2 | $ 23.2 | $ 23.2 | $ 23.2 | $ 23.2
Weighted average life (in years) |  |  |  | 4 years 10 months 24 days |

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