Goodwill and Other Intangible Assets, Net - Goodwill (Details) $ in Millions	6 Months Ended
Jun. 30, 2019 USD ($)
Goodwill [Roll forward]
Beginning balance	$ 11,400.1
Acquisitions	99.9
Divestitures	0.0
Adjustments to Acquisitions	(2.3)
Ending balance	11,497.7
Group 1
Goodwill [Roll forward]
Beginning balance	6,150.6
Acquisitions	78.0
Divestitures	0.0
Adjustments to Acquisitions	(2.3)
Ending balance	6,226.3
Group 2
Goodwill [Roll forward]
Beginning balance	5,249.5
Acquisitions	21.9
Divestitures	0.0
Adjustments to Acquisitions	0.0
Ending balance	$ 5,271.4

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.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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