Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Amortized intangible assets
Accumulated Amortization	$ (1,153.0)	$ (953.6)
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross Carrying Amount	4,848.8	4,750.8
Accumulated Amortization	(1,153.0)	(953.6)
Net Carrying Amount	3,695.8	3,797.2
Tradenames
Unamortized intangible assets
Carrying amount	1,507.3	1,491.3
Customer lists and relationships
Amortized intangible assets
Gross Carrying Amount	2,871.8	2,835.0
Accumulated Amortization	(981.7)	(841.3)
Net Carrying Amount	1,890.1	1,993.7
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	(981.7)	(841.3)
Technology
Amortized intangible assets
Gross Carrying Amount	322.6	279.9
Accumulated Amortization	(75.7)	(38.1)
Net Carrying Amount	246.9	241.8
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	(75.7)	(38.1)
Tradenames
Amortized intangible assets
Gross Carrying Amount	41.0	41.8
Accumulated Amortization	(19.6)	(15.6)
Net Carrying Amount	21.4	26.2
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	(19.6)	(15.6)
Other
Amortized intangible assets
Gross Carrying Amount	106.1	102.8
Accumulated Amortization	(76.0)	(58.6)
Net Carrying Amount	30.1	44.2
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	$ (76.0)	$ (58.6)