Goodwill and Intangible Assets - Goodwill Roll Forward (Details) - USD ($)		3 Months Ended	12 Months Ended
		Jun. 29, 2019	Dec. 31, 2019		Dec. 31, 2018
Goodwill [Roll Forward]
Beginning balance			$ 3,979,800,000		$ 4,175,400,000
Business divestitures			(42,200,000)
Business acquisitions			291,100,000
Impairments			(109,200,000)		(136,700,000)
Currency translation adjustments			(2,800,000)		(58,900,000)
Ending balance			4,116,700,000		3,979,800,000
CSCA
Goodwill [Roll Forward]
Beginning balance			1,713,700,000		1,847,400,000
Business divestitures			(42,200,000)
Business acquisitions			223,000,000.0
Impairments			0		(136,700,000)
Currency translation adjustments			4,600,000		3,000,000.0
Ending balance			1,899,100,000		1,713,700,000
CSCI
Goodwill [Line Items]
Accumulated impairment			868,400,000		868,400,000
Goodwill [Roll Forward]
Beginning balance	[1]		1,151,300,000		1,205,700,000
Business divestitures	[1]		0
Business acquisitions	[1]		68,100,000
Impairments	[1]		0		0
Currency translation adjustments	[1]		(15,700,000)		(54,400,000)
Ending balance	[1]		1,203,700,000		1,151,300,000
RX
Goodwill [Line Items]
Accumulated impairment			109,200,000
Goodwill [Roll Forward]
Beginning balance	[2]		1,114,800,000		1,122,300,000
Business divestitures	[2]		0
Business acquisitions	[2]		0
Impairments		$ 0	(109,200,000)	[2]	0	[2]
Currency translation adjustments	[2]		8,300,000		(7,500,000)
Ending balance	[2]		$ 1,013,900,000		$ 1,114,800,000

[1] (1) We had accumulated impairments of $868.4 million as of December 31, 2019 and December 31, 2018.

[2] We had accumulated impairments of $109.2 million as of December 31, 2019.