Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Apr. 02, 2016	Sep. 30, 2017
Goodwill [Roll Forward]
December 31, 2016		$ 4,049.4
Goodwill, Written off Related to Sale of Business Unit		4.1
Goodwill, transfers		(32.6)
Currency translation adjustment		139.3
September 30, 2017		4,152.0
CHCI
Goodwill [Roll Forward]
December 31, 2016		1,070.8
Goodwill, Written off Related to Sale of Business Unit		4.1
Goodwill, transfers		0.0
Currency translation adjustment		122.3
September 30, 2017		1,189.0
Goodwill impairment charge	$ 130.5
CHCA
Goodwill [Roll Forward]
December 31, 2016		1,810.6
Goodwill, Written off Related to Sale of Business Unit		0.0
Goodwill, transfers		0.0
Currency translation adjustment		2.9
September 30, 2017		1,813.5
RX
Goodwill [Roll Forward]
December 31, 2016		1,086.6
Goodwill, Written off Related to Sale of Business Unit		0.0
Goodwill, transfers		0.0
Currency translation adjustment		6.5
September 30, 2017		1,093.1
Other
Goodwill [Roll Forward]
December 31, 2016		81.4
Goodwill, Written off Related to Sale of Business Unit		0.0
Goodwill, transfers		(32.6)
Currency translation adjustment		7.6
September 30, 2017		$ 56.4

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of transfers into (out of) an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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