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Goodwill and Intangible Assets (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |
Goodwill, Gross Carrying Value | $ 10,199.0 |  | $ 10,259.6
Goodwill, Accumulated Amortization | (497.2) |  | (521.0)
Goodwill, Net Carrying Value | 9,701.8 | $ 9,723.2 | 9,738.6
Intangible assets: |  |  |
Intangible assets:, Gross Carrying Value | 1,147.1 |  | 1,154.5
Intangible assets:, Accumulated Amortization | (815.6) |  | (856.5)
Intangible assets:, Net Carrying Value | 331.5 |  | 298.0
Changes in Goodwill |  |  |
Goodwill, January 1 | 9,738.6 | 9,609.7 |
Goodwill, Acquisitions | 201.1 | 17.8 |
Goodwill, Noncontrolling interests in acquired businesses | 47.9 | 37.3 |
Goodwill, Contingent purchase price obligations of acquired businesses | 0.0 | 88.0 |
Goodwill, Dispositions | (19.6) | (21.6) |
Goodwill, Foreign currency translation | (266.2) | (8.0) |
Goodwill, March 31 | 9,701.8 | $ 9,723.2 |
Purchased and internally developed software |  |  |
Intangible assets: |  |  |
Intangible assets:, Gross Carrying Value | 370.0 |  | 382.2
Intangible assets:, Accumulated Amortization | (311.7) |  | (318.7)
Intangible assets:, Net Carrying Value | 58.3 |  | 63.5
Customer related and other |  |  |
Intangible assets: |  |  |
Intangible assets:, Gross Carrying Value | 777.1 |  | 772.3
Intangible assets:, Accumulated Amortization | (503.9) |  | (537.8)
Intangible assets:, Net Carrying Value | $ 273.2 |  | $ 234.5

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