Goodwill and Other Intangible Assets - Intangible Assets Narrative (Details) - USD ($) $ in Millions	3 Months Ended							6 Months Ended	9 Months Ended	12 Months Ended
	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Dec. 31, 2016	Oct. 01, 2016	Apr. 02, 2016	Dec. 31, 2015	Dec. 31, 2015	Oct. 01, 2016	Dec. 31, 2017	Dec. 31, 2016	Jun. 27, 2015	Sep. 30, 2016	Apr. 03, 2016
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets	$ 18.5			$ 378.6	$ 866.6	$ 273.3	$ 185.1					$ 0.0
Impairment of intangible assets, definite-lived intangible										$ 19.7	$ 665.6
Impairment of intangible assets, indefinite-lived		$ 12.2						$ 185.1		12.7	849.5
Amortization of intangible assets								128.6		349.6	356.8	$ 174.5
Indefinite-lived intangible assets													$ 674.4
Finite lived assets, useful life									20 years
RX
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, definite-lived intangible	$ 18.5									19.7	342.2
Impairment of intangible assets, indefinite-lived								0.0		11.6
CHCI
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, definite-lived intangible										0.0	321.4
Impairment of intangible assets, indefinite-lived			$ 30.5					$ 185.1		1.1
Omega | CHCI
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, definite-lived intangible					290.9
Impairment of intangible assets, indefinite-lived					$ 575.7	$ 273.4
Entocort® | RX
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, definite-lived intangible											342.2
In-process research and development
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, indefinite-lived										$ 12.7	3.5
In-process research and development | RX
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, indefinite-lived											0.0
In-process research and development | CHCI
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, indefinite-lived											$ 3.5
Nonrecurring
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Indefinite-lived intangible assets														$ 364.5