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Goodwill - Schedule of Goodwill by Segment (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2021 USD ($)
Goodwill [Roll Forward] |
Beginning balance | $ 2,595.9
Foreign currency translation | 5.5
Ending balance | 2,731.9
Corporate |
Goodwill [Roll Forward] |
Beginning balance | 1,123.6
Foreign currency translation | 0.0
Ending balance | 1,123.8
Accumulated impairment losses | 1,571.0
Small Business |
Goodwill [Roll Forward] |
Beginning balance | 185.9
Foreign currency translation | 0.0
Ending balance | 185.9
Public |
Goodwill [Roll Forward] |
Beginning balance | 929.6
Foreign currency translation | 0.0
Ending balance | 1,059.9
Accumulated impairment losses | 354.0
Other |
Goodwill [Roll Forward] |
Beginning balance | 356.8
Foreign currency translation | 5.5
Ending balance | 362.3
Accumulated impairment losses | 28.0
Amplified IT |
Goodwill [Roll Forward] |
Acquisition | 130.3
Amplified IT | Corporate |
Goodwill [Roll Forward] |
Acquisition | 0.0
Amplified IT | Small Business |
Goodwill [Roll Forward] |
Acquisition | 0.0
Amplified IT | Public |
Goodwill [Roll Forward] |
Acquisition | 130.3
Amplified IT | Other |
Goodwill [Roll Forward] |
Acquisition | 0.0
Other Acquisition |
Goodwill [Roll Forward] |
Acquisition | 0.2
Other Acquisition | Corporate |
Goodwill [Roll Forward] |
Acquisition | 0.2
Other Acquisition | Small Business |
Goodwill [Roll Forward] |
Acquisition | 0.0
Other Acquisition | Public |
Goodwill [Roll Forward] |
Acquisition | 0.0
Other Acquisition | Other |
Goodwill [Roll Forward] |
Acquisition | $ 0.0

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