Goodwill and Other Intangible Assets, Net (Schedule of Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Summary of the activity and balances in goodwill accounts, net, by operating segment [Roll forward]
Goodwill, Beginning Balance	$ 11,315.4	$ 11,163.2
Acquisitions	112.9	180.9
Divestitures	(31.1)	(28.6)
Adjustments to Acquisitions	2.9	(0.1)
Goodwill, ending balance	11,400.1	11,315.4
Group 1
Summary of the activity and balances in goodwill accounts, net, by operating segment [Roll forward]
Goodwill, Beginning Balance	6,084.0	6,055.9
Acquisitions	94.8	57.7
Divestitures	(27.0)	(23.5)
Adjustments to Acquisitions	(1.2)	(6.1)
Goodwill, ending balance	6,150.6	6,084.0
Group 2
Summary of the activity and balances in goodwill accounts, net, by operating segment [Roll forward]
Goodwill, Beginning Balance	5,231.4	5,107.3
Acquisitions	18.1	123.2
Divestitures	(4.1)	(5.1)
Adjustments to Acquisitions	4.1	6.0
Goodwill, ending balance	$ 5,249.5	$ 5,231.4

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 increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the 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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