Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Amortized intangible assets:
Accumulated Amortization	$ (1,080.6)	$ (732.6)
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross Carrying Amount	5,813.2	1,987.6
Accumulated Amortization	(1,080.6)	(732.6)
Net Carrying Amount	4,732.6	1,255.0
Tradenames
Unamortized intangible assets:
Carrying amount	1,933.1	614.3
Customer lists and relationships
Amortized intangible assets:
Gross Carrying Amount	3,446.9	1,238.7
Accumulated Amortization	(966.0)	(673.9)
Net Carrying Amount	2,480.9	564.8
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	(966.0)	(673.9)
Technology
Amortized intangible assets:
Gross Carrying Amount	285.9	30.2
Accumulated Amortization	(39.0)	(6.0)
Net Carrying Amount	246.9	24.2
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	(39.0)	(6.0)
Tradenames
Amortized intangible assets:
Gross Carrying Amount	41.8	40.4
Accumulated Amortization	(15.6)	(11.9)
Net Carrying Amount	26.2	28.5
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	(15.6)	(11.9)
Other
Amortized intangible assets:
Gross Carrying Amount	105.5	64.0
Accumulated Amortization	(60.0)	(40.8)
Net Carrying Amount	45.5	23.2
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	$ (60.0)	$ (40.8)