Goodwill and Other Intangible Assets - Intangible categories (Details) - USD ($) $ in Millions		3 Months Ended				6 Months Ended
	Mar. 30, 2015	Jul. 02, 2016	Apr. 02, 2016	Dec. 31, 2015	Jun. 27, 2015	Jul. 02, 2016		Jun. 27, 2015	[1]	Mar. 01, 2016	[2]	Jan. 22, 2016	[2]	Sep. 15, 2015
Finite And Indefinite Lived Assets By Major Class [Line Items]
Goodwill, Impairment Loss						$ 163.3
Intangible assets subject to amortization, gross		$ 10,313.0		$ 9,512.2		10,313.0
Intangible assets subject to amortization, accumulated amortization		1,633.7		1,321.7		1,633.7
Intangible assets not subject to amortization		1,355.3		1,916.3		1,355.3
Total other intangible assets		11,668.3		11,428.5		11,668.3
Intangible assets amortization expense		$ 161.7			$ 142.6	319.7	[1]	$ 250.4
Finite-Lived Intangible Asset, Useful Life		20 years
Trademarks, trade names, and brands
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets not subject to amortization		$ 1,288.4		1,868.1		1,288.4
In-process research and development [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets not subject to amortization		66.9		48.2		66.9				$ 24.9		$ 0.0
Distribution and license agreements, supply agreements
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets subject to amortization, gross		6,056.7		6,053.4		6,056.7
Intangible assets subject to amortization, accumulated amortization		831.5		667.2		831.5
Developed product technology, formulation and product rights [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets subject to amortization, gross		1,784.6		1,383.5		1,784.6								$ 0.0
Intangible assets subject to amortization, accumulated amortization		492.1		426.0		492.1
Customer relationships and distribution networks [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets subject to amortization, gross		1,545.7		1,520.7		1,545.7
Intangible assets subject to amortization, accumulated amortization		256.6		193.0		256.6
Trademarks, trade names, and brands
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets subject to amortization, gross		911.4		539.4		911.4
Intangible assets subject to amortization, accumulated amortization		42.6		22.8		42.6
Non-compete agreements [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets subject to amortization, gross		14.6		15.2		14.6
Intangible assets subject to amortization, accumulated amortization		10.9		12.7		10.9
Omega [Member] | Brands [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			$ 273.4
Impairment of Intangible Assets, Finite-lived				185.1
Other Indefinite-lived Intangible Assets		364.5
Omega [Member] | In-process research and development [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets not subject to amortization	$ 0.0
Omega [Member] | Brands [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Finite-Lived Intangible Asset, Useful Life	22 years
Omega [Member] | Developed product technology, formulation and product rights [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets subject to amortization, gross				$ 27.2
Omega [Member] | Customer relationships and distribution networks [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Finite-Lived Intangible Asset, Useful Life	21 years
BCH [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Goodwill, Impairment Loss		(30.3)	$ 193.6			163.3
Intangible assets amortization expense		$ 39.5			$ 34.2	$ 74.9	[1]	$ 34.2

[1] The BCH segment was created on March 30, 2015 as a result of the Omega acquisition, thus data for the six months ended June 27, 2015 includes only three months of results from operations attributable to Omega.

[2] * Opening balance sheet is preliminary