Goodwill and Other Intangible Assets Goodwill (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 27, 2015	Dec. 31, 2015	Jun. 27, 2015	Jun. 28, 2014	Jun. 29, 2013
Goodwill [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 2,263,100,000	$ 1,916,300,000	$ 2,263,100,000	$ 69,700,000
Write-off of in-process research and development		0	0	6,000,000	$ 9,000,000
Goodwill [Roll Forward]
Beginning balance		4,971,900,000	3,474,100,000	1,089,200,000
Goodwill, acquired during period		97,100,000	1,517,900,000	2,350,000,000
Goodwill impairment charge		0	(6,800,000)	0	0
Goodwill, Transfers		(27,500,000)
Currency translation adjustment		(64,800,000)	(300,000)	34,900,000
Purchase Accounting Adjustments		388,200,000	(13,000,000)
Ending balance	4,971,900,000	5,364,900,000	4,971,900,000	3,474,100,000	1,089,200,000
CHC [Member]
Goodwill [Roll Forward]
Beginning balance		1,897,500,000	1,916,400,000	611,600,000
Goodwill, acquired during period		9,700,000	4,800,000	1,297,200,000
Goodwill impairment charge			(6,800,000)
Goodwill, Transfers		(13,000,000)
Currency translation adjustment		(5,100,000)	(9,700,000)	7,600,000
Purchase Accounting Adjustments		900,000	(7,200,000)
Ending balance	1,897,500,000	1,890,000,000	1,897,500,000	1,916,400,000	611,600,000
BCH [Member]
Goodwill [Roll Forward]
Beginning balance		1,551,900,000	0	0
Goodwill, acquired during period		87,400,000	1,513,100,000	0
Goodwill impairment charge			0
Goodwill, Transfers		0
Currency translation adjustment		(46,100,000)	38,800,000	0
Purchase Accounting Adjustments		387,300,000	0
Ending balance	1,551,900,000	1,980,500,000	1,551,900,000	0	0
Rx
Goodwill [Roll Forward]
Beginning balance		1,233,600,000	1,258,300,000	385,400,000
Goodwill, acquired during period		0	0	851,000,000
Goodwill impairment charge			0
Goodwill, Transfers		0
Currency translation adjustment		(11,400,000)	(20,000,000)	21,900,000
Purchase Accounting Adjustments		0	(4,700,000)
Ending balance	1,233,600,000	1,222,200,000	1,233,600,000	1,258,300,000	385,400,000
Specialty Sciences [Member]
Goodwill [Roll Forward]
Beginning balance		200,700,000	201,800,000	0
Goodwill, acquired during period		0	0	201,800,000
Goodwill impairment charge			0
Goodwill, Transfers		0
Currency translation adjustment		0	0	0
Purchase Accounting Adjustments		0	(1,100,000)
Ending balance	200,700,000	200,700,000	200,700,000	201,800,000	0
Other [Member]
Goodwill [Roll Forward]
Beginning balance		88,200,000	97,600,000	92,200,000
Goodwill, acquired during period		0	0	0
Goodwill impairment charge			0
Goodwill, Transfers		(14,500,000)
Currency translation adjustment		(2,200,000)	(9,400,000)	5,400,000
Purchase Accounting Adjustments		0	0
Ending balance	88,200,000	71,500,000	88,200,000	97,600,000	$ 92,200,000
Elan Corporation [Member]
Goodwill [Line Items]
Amount of goodwill allocated to other business segments				2,100,000,000
Goodwill [Roll Forward]
Beginning balance			2,300,000,000
Ending balance				2,300,000,000
Mexico | CHC [Member]
Goodwill [Roll Forward]
Goodwill impairment charge	(6,800,000)
Trade names and trademarks [Member]
Goodwill [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 2,257,300,000	$ 1,868,100,000	$ 2,257,300,000	$ 59,500,000