Goodwill and Other Intangible Assets - Intangible categories (Details) - USD ($)			3 Months Ended				6 Months Ended
		Mar. 30, 2015	Apr. 02, 2016		Dec. 31, 2015	Mar. 28, 2015	Dec. 31, 2015	Mar. 01, 2016	[2]	Jan. 22, 2016	[2]	Sep. 15, 2015
Finite And Indefinite Lived Assets By Major Class [Line Items]
Goodwill, Impairment Loss			$ 193,600,000				$ 0
Intangible assets subject to amortization, gross			10,004,900,000		$ 9,512,200,000		9,512,200,000
Intangible assets subject to amortization, accumulated amortization			1,485,800,000		1,321,700,000		1,321,700,000
Intangible assets not subject to amortization			1,751,800,000		1,916,300,000		1,916,300,000
Total other intangible assets			11,756,700,000		11,428,500,000		11,428,500,000
Intangible assets amortization expense			$ 158,000,000			$ 107,800,000
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]		$ 1,682,300,000		1,868,100,000		1,868,100,000
In-process research and development [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets not subject to amortization			69,500,000		48,200,000		48,200,000	$ 29,000,000		$ 0
Distribution and license agreements, supply agreements
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets subject to amortization, gross			6,054,800,000		6,053,400,000		6,053,400,000
Intangible assets subject to amortization, accumulated amortization			749,800,000		667,200,000		667,200,000
Developed product technology, formulation and product rights [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets subject to amortization, gross			1,795,700,000		1,383,500,000		1,383,500,000					$ 0
Intangible assets subject to amortization, accumulated amortization			462,300,000		426,000,000		426,000,000
Customer relationships and distribution networks [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets subject to amortization, gross			1,573,200,000		1,520,700,000		1,520,700,000
Intangible assets subject to amortization, accumulated amortization			229,000,000		193,000,000		193,000,000
Trademarks, trade names, and brands
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets subject to amortization, gross			563,600,000		539,400,000		539,400,000
Intangible assets subject to amortization, accumulated amortization			31,200,000		22,800,000		22,800,000
Non-compete agreements [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Intangible assets subject to amortization, gross			17,600,000		15,200,000		15,200,000
Intangible assets subject to amortization, accumulated amortization			13,500,000		12,700,000		12,700,000
Omega [Member] | Brands [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			273,400,000
Impairment of Intangible Assets, Finite-lived			273,400,000		185,100,000
Other Indefinite-lived Intangible Assets			364,500,000
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
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					27,200,000		27,200,000
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			193,600,000
Intangible assets amortization expense			35,400,000			$ 0
Fair value, measurements, non-recurring [Member] | Fair value, inputs, level 3 [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Goodwill, Fair Value Disclosure			$ 1,761,600,000	[3]	$ 0		$ 0

[1] * Includes impairment charges of $273.4 million and $185.1 million at April 2, 2016 and December 31, 2015, respectively, as described further below.

[2] * Opening balance sheet is preliminary

[3] Goodwill with a carrying amount of $1,955.2 million was written down to its implied fair value of $1,761.6 million, resulting in an impairment charge of $193.6 million, which was included in Impairment charges on the Condensed Consolidated Statements of Operations for the three months ended April 2, 2016.