Goodwill and Other Intangible Assets - Summary of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Beginning Balance	$ 1,778.5	$ 1,765.3
Acquisitions	184.5	46.3
Measurement period adjustments	(0.3)	14.9
Effect of movements in exchange rates and other	6.4	(48.0)
Ending Balance	1,969.1	1,778.5
Americas
Goodwill [Roll Forward]
Beginning Balance	1,254.4	1,249.7
Acquisitions	160.3	0.0
Measurement period adjustments	(0.7)	12.7
Effect of movements in exchange rates and other	3.1	(8.0)
Ending Balance	1,417.1	1,254.4
EMEA
Goodwill [Roll Forward]
Beginning Balance	266.1	249.0
Acquisitions	11.5	30.2
Measurement period adjustments	0.0	0.1
Effect of movements in exchange rates and other	4.6	(13.2)
Ending Balance	282.2	266.1
APAC
Goodwill [Roll Forward]
Beginning Balance	258.0	266.6
Acquisitions	12.7	16.1
Measurement period adjustments	0.4	2.1
Effect of movements in exchange rates and other	(1.3)	(26.8)
Ending Balance	$ 269.8	$ 258.0

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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