Goodwill and Other Intangible Assets - Intangible Assets Impairments (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended	12 Months Ended
	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016
Schedule of Definite and Indefinite Intangible Asset [Line Items]
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
CHCA
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, definite-lived intangible					0.0
Impairment of intangible assets, indefinite-lived				0.0	0.0
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
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
Other
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, definite-lived intangible					0.0	2.0
Impairment of intangible assets, indefinite-lived				$ 0.0	0.0
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 | CHCA
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
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 | Other
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, indefinite-lived						0.0
Trademarks, trade names, and brands
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, indefinite-lived						849.5
Trademarks, trade names, and brands | CHCA
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, indefinite-lived						0.4
Trademarks, trade names, and brands | CHCI
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, indefinite-lived						849.1
Trademarks, trade names, and brands | RX
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, indefinite-lived						0.0
Trademarks, trade names, and brands | Other
Schedule of Definite and Indefinite Intangible Asset [Line Items]
Impairment of intangible assets, indefinite-lived						$ 0.0