Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($)	3 Months Ended	6 Months Ended
	Apr. 02, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Beginning balance	$ 5,152,700,000
Business acquisitions	2,200,000
Purchase accounting adjustments	600,000
Impairments	(130,500,000)	$ 0
Changes in assets held for sale	8,500,000
Currency translation adjustment	88,300,000
Ending balance	5,121,800,000	5,152,700,000
Fair value, inputs, level 3 | Measured on a non-recurring basis
Goodwill [Roll Forward]
Fair value of impaired goodwill	1,593,300,000	0
CHC
Goodwill [Roll Forward]
Beginning balance	1,890,000,000
Business acquisitions	0
Purchase accounting adjustments	0
Impairments	0
Changes in assets held for sale	4,800,000
Currency translation adjustment	(1,300,000)
Ending balance	1,893,500,000	1,890,000,000
BCH
Goodwill [Roll Forward]
Beginning balance	1,769,400,000
Business acquisitions	0
Purchase accounting adjustments	600,000
Impairments	(130,500,000)
Changes in assets held for sale	0
Currency translation adjustment	89,700,000
Ending balance	1,729,200,000	1,769,400,000
Rx
Goodwill [Roll Forward]
Beginning balance	1,222,200,000
Business acquisitions	2,200,000
Purchase accounting adjustments	0
Impairments	0
Changes in assets held for sale	0
Currency translation adjustment	(2,600,000)
Ending balance	1,221,800,000	1,222,200,000
Specialty Sciences
Goodwill [Roll Forward]
Beginning balance	199,600,000
Business acquisitions	0
Purchase accounting adjustments	0
Impairments	0
Changes in assets held for sale	0
Currency translation adjustment	0
Ending balance	199,600,000	199,600,000
Other
Goodwill [Roll Forward]
Beginning balance	71,500,000
Business acquisitions	0
Purchase accounting adjustments	0
Impairments	0
Changes in assets held for sale	3,700,000
Currency translation adjustment	2,500,000
Ending balance	$ 77,700,000	$ 71,500,000