Goodwill and Intangible Assets - Computer Software and Goodwill (Details) - USD ($) $ in Millions |
3 Months Ended | |||||
|---|---|---|---|---|---|---|
Sep. 30, 2022 |
Jun. 30, 2022 |
Mar. 31, 2022 |
Sep. 30, 2021 |
Jun. 30, 2021 |
Mar. 31, 2021 |
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| Computer software | ||||||
| Balance at beginning of period | $ 578.9 | $ 563.4 | $ 557.4 | $ 516.5 | $ 508.1 | $ 437.0 |
| Acquisitions | (1.0) | 65.0 | ||||
| Additions at cost | 57.3 | 61.9 | 43.4 | 46.0 | 33.9 | 42.2 |
| Amortization | (30.7) | (31.8) | (30.3) | (30.7) | (26.6) | (24.5) |
| Write-off | (1.1) | (0.4) | (0.7) | (3.1) | ||
| Other | (15.7) | (14.6) | (7.1) | (5.8) | 2.8 | (8.5) |
| Balance at end of period | 588.7 | 578.9 | 563.4 | 525.6 | 516.5 | 508.1 |
| Goodwill | ||||||
| Balance at beginning of period | 3,437.1 | 3,475.4 | 3,493.3 | 3,331.1 | 3,318.2 | 2,857.9 |
| Acquisitions | 2.6 | 488.4 | ||||
| Other | (36.3) | (38.3) | (17.9) | (12.4) | 10.3 | (28.1) |
| Balance at end of period | $ 3,400.8 | $ 3,437.1 | $ 3,475.4 | $ 3,318.7 | $ 3,331.1 | $ 3,318.2 |
| X | ||||||||||
- Definition Capitalized Computer Software, Acquisitions No definition available.
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| X | ||||||||||
- Definition Capitalized Computer Software Other Increase (Decrease) No definition available.
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| X | ||||||||||
- Definition Additions made to capitalized computer software costs during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of expense for amortization of capitalized computer software costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of impairment loss from capitalized computer software costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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