Goodwill and Other Intangible Assets - Intangible categories (Details) - USD ($) $ in Millions			3 Months Ended			9 Months Ended
		Oct. 02, 2016	Oct. 01, 2016	Apr. 02, 2016	Sep. 26, 2015	Oct. 01, 2016		Sep. 26, 2015	[1]	Dec. 31, 2015	Mar. 30, 2015
Finite And Indefinite Lived Assets By Major Class [Line Items]
Finite-lived intangible assets, gross			$ 4,325.9			$ 4,325.9				$ 3,705.3
Finite-lived intangible assets, accumulated amortization			989.7			989.7				732.2
Indefinite-lived intangibles			792.1			792.1				1,916.3
Total other intangible assets			5,118.0			5,118.0				5,621.6
Intangible assets amortization expense			89.7		$ 75.0	263.9	[1]	$ 180.4
Trademarks, trade names, and brands
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles			724.2			724.2				1,868.1
In-process research and development
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles			67.9			67.9				48.2
Distribution and license agreements, supply agreements
Finite And Indefinite Lived Assets By Major Class [Line Items]
Finite-lived intangible assets, gross			311.3			311.3				242.4
Finite-lived intangible assets, accumulated amortization			106.2			106.2				77.7
Developed product technology, formulations, and product rights
Finite And Indefinite Lived Assets By Major Class [Line Items]
Finite-lived intangible assets, gross			1,804.4			1,804.4				1,387.6
Finite-lived intangible assets, accumulated amortization			529.0			529.0				426.0
Customer relationships and distribution networks
Finite And Indefinite Lived Assets By Major Class [Line Items]
Finite-lived intangible assets, gross			1,564.0			1,564.0				1,520.7
Finite-lived intangible assets, accumulated amortization			288.8			288.8				193.0
Trademarks, trade names, and brands
Finite And Indefinite Lived Assets By Major Class [Line Items]
Finite-lived intangible assets, gross			631.6			631.6				539.4
Finite-lived intangible assets, accumulated amortization			54.7			54.7				22.8
Non-compete agreements
Finite And Indefinite Lived Assets By Major Class [Line Items]
Finite-lived intangible assets, gross			14.6			14.6				15.2
Finite-lived intangible assets, accumulated amortization			11.0			11.0				12.7
Omega
Finite And Indefinite Lived Assets By Major Class [Line Items]
Impairment of finite-lived intangible assets						185.1
Omega | Brands
Finite And Indefinite Lived Assets By Major Class [Line Items]
Impairment of finite-lived intangible assets			290.9			290.2
Impairment of intangible assets, indefinite-lived (excluding goodwill)			575.7	$ 273.4		849.1
Omega | In-process research and development
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles											$ 0.0
BCH
Finite And Indefinite Lived Assets By Major Class [Line Items]
Finite-lived intangible assets, gross			357.8			357.8
Intangible assets amortization expense			$ 39.3		$ 36.3	$ 114.3	[1]	$ 70.5
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	[2]									$ 1,031.8
Subsequent Event
Finite And Indefinite Lived Assets By Major Class [Line Items]
Finite-lived intangible asset useful life		20 years
Subsequent Event | Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	[2]	$ 672.4

[1] The BCH segment was created on March 30, 2015 as a result of the Omega acquisition, thus data for the nine months ended September 26, 2015 includes only six months of results from operations attributable to Omega.

[2] (2)Indefinite-lived intangible assets with a carrying amount of $1.2 billion were written down to a fair value of $672.4 million resulting in total impairment charges of $575.7 million for the three months ended October 1, 2016; impairment charges totaled $849.1 million for the nine months ended October 1, 2016 and are included in Impairment charges on the Condensed Consolidated Statements of Operations.