Goodwill and Other Intangible Assets - Goodwill Roll Forward (Details) - USD ($)		3 Months Ended				6 Months Ended	12 Months Ended
		Dec. 31, 2016	Dec. 31, 2016	Oct. 01, 2016	Apr. 02, 2016	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Jun. 27, 2015
Goodwill [Roll Forward]
Beginning balance					$ 5,152,700,000	$ 4,721,200,000	$ 4,049,400,000	$ 5,152,700,000
Business acquisitions						97,100,000		1,700,000
Changes in assets held-for-sale						(27,600,000)		13,500,000
Impairments		$ (224,100,000)		$ (737,900)	(130,500,000)	0		(1,092,500,000)
Re-allocation of goodwill	[1]						0
Business divestitures							(30,500,000)
Currency translation adjustments						(58,100,000)	156,500,000	(26,700,000)
Purchase accounting adjustments						420,100,000		700,000
Ending balance		4,049,400,000	$ 4,049,400,000			5,152,700,000	4,175,400,000	4,049,400,000	$ 4,721,200,000
CHCA
Goodwill [Roll Forward]
Beginning balance					1,814,300,000	1,817,200,000	1,810,600,000	1,814,300,000
Business acquisitions						9,700,000		0
Changes in assets held-for-sale						(13,000,000)		4,500,000
Impairments								(24,500,000)	(6,800,000)
Re-allocation of goodwill	[1]						35,300,000
Business divestitures							0
Currency translation adjustments						(800,000)	1,500,000	(900,000)
Purchase accounting adjustments						1,200,000		17,200,000
Ending balance		1,810,600,000	1,810,600,000			1,814,300,000	1,847,400,000	1,810,600,000	1,817,200,000
CHCI
Goodwill [Roll Forward]
Beginning balance					1,983,200,000	1,530,200,000	1,070,800,000	1,983,200,000
Business acquisitions						87,400,000		0
Changes in assets held-for-sale						0		0
Impairments					(130,500,000)			(868,400,000)
Re-allocation of goodwill	[1]						0
Business divestitures							(4,100,000)
Currency translation adjustments						(53,300,000)	139,000,000	(27,500,000)
Purchase accounting adjustments						418,900,000		(16,500,000)
Ending balance		1,070,800,000	1,070,800,000			1,983,200,000	1,205,700,000	1,070,800,000	1,530,200,000
RX
Goodwill [Roll Forward]
Beginning balance					1,084,100,000	1,086,000,000	1,086,600,000	1,084,100,000
Business acquisitions						0		1,700,000
Changes in assets held-for-sale						0		0
Impairments								0
Re-allocation of goodwill	[1]						27,700,000
Business divestitures							0
Currency translation adjustments						(1,900,000)	8,000,000	800,000
Purchase accounting adjustments						0		0
Ending balance		1,086,600,000	1,086,600,000			1,084,100,000	1,122,300,000	1,086,600,000	1,086,000,000
Specialty Sciences
Goodwill [Roll Forward]
Beginning balance					199,600,000	199,600,000	0	199,600,000
Business acquisitions						0		0
Changes in assets held-for-sale						0		0
Impairments			(199,600,000)					(199,600,000)
Re-allocation of goodwill	[1]						0
Business divestitures							0
Currency translation adjustments						0	0	0
Purchase accounting adjustments						0		0
Ending balance		0	0			199,600,000	0	0	199,600,000
Other
Goodwill [Roll Forward]
Beginning balance					$ 71,500,000	88,200,000	81,400,000	71,500,000
Business acquisitions						0		0
Changes in assets held-for-sale						(14,600,000)		9,000,000
Impairments								0
Re-allocation of goodwill	[1]						(63,000,000)
Business divestitures							(26,400,000)
Currency translation adjustments						(2,100,000)	8,000,000	900,000
Purchase accounting adjustments						0		0
Ending balance		$ 81,400,000	$ 81,400,000			$ 71,500,000	$ 0	$ 81,400,000	$ 88,200,000

[1] Certain cash flow associated with the API business were retained. We performed a relative fair value allocation of the business retained and allocated it among the two segments where the business was allocated.