Acquisitions Purchase Price (Details) - USD ($) $ / shares in Units, $ in Millions				9 Months Ended		12 Months Ended
	Aug. 28, 2017	Mar. 02, 2017	Feb. 14, 2017	Sep. 30, 2017	Oct. 01, 2016	Dec. 31, 2016	Oct. 31, 2016
Purchase Price
Cash paid				$ 7,224.4	$ 5,599.2
Debt assumed				488.3
Fair value of contingent consideration				12.2
Fair value of equity awards exchanged				6.1
Purchase price payable				49.9
Cash acquired				(65.7)
Total Purchase Price				7,715.2
Net Assets Acquired [Abstract]
Current assets				1,084.6
Property, plant and equipment				1,309.4
Goodwill				3,393.3
Other assets				58.8
Deferred tax liabilities				(1,063.4)
Other liabilities assumed				(945.8)
Total Purchase Price				$ 7,715.2
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years)				16 years
In-Process Research and Development [Member]
Net Assets Acquired [Abstract]
Indefinite-lived intangible assets				$ 1.6
Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets				$ 3,696.1
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years)				17 years
Product Technology [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets				$ 66.1
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years)				10 years
Tradenames and other [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets				$ 114.5
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years)				4 years
Patheon N.V. [Member]
Business Acquisition [Line Items]
Business Acquisition, Share Price	$ 35.00
Purchase Price
Cash paid	$ 6,861.1
Debt assumed	488.1
Fair value of equity awards exchanged	6.1
Purchase price payable	49.9
Cash acquired	(47.5)
Total Purchase Price	7,357.7
Net Assets Acquired [Abstract]
Current assets	1,060.3
Property, plant and equipment	1,306.9
Goodwill	3,168.9
Other assets	58.8
Deferred tax liabilities	(1,029.7)
Other liabilities assumed	(924.1)
Total Purchase Price	7,357.7
Revenue Reported by Acquired Entity							$ 1,870.0
Goodwill, Expected Tax Deductible Amount	0.0
Patheon N.V. [Member] | Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets	3,607.0
Patheon N.V. [Member] | Tradenames and other [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets	$ 109.6
Core Informatics [Member]
Purchase Price
Cash paid		$ 94.6
Fair value of contingent consideration		9.1
Cash acquired		(10.1)
Total Purchase Price		93.6
Net Assets Acquired [Abstract]
Current assets		2.0
Property, plant and equipment		0.2
Goodwill		62.5
Deferred tax liabilities		(3.7)
Other liabilities assumed		(5.5)
Total Purchase Price		93.6
Revenue Reported by Acquired Entity						$ 10.0
Goodwill, Expected Tax Deductible Amount		50.0
Core Informatics [Member] | Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets		6.3
Core Informatics [Member] | Product Technology [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets		29.1
Core Informatics [Member] | Tradenames and other [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets		$ 2.7
Finesse Solutions, Inc. [Member]
Purchase Price
Cash paid			$ 223.1
Cash acquired			(2.1)
Total Purchase Price			221.0
Net Assets Acquired [Abstract]
Current assets			18.0
Property, plant and equipment			1.6
Goodwill			134.7
Deferred tax liabilities			(22.3)
Other liabilities assumed			(14.5)
Total Purchase Price			221.0
Revenue Reported by Acquired Entity						$ 50.0
Goodwill, Expected Tax Deductible Amount			0.0
Finesse Solutions, Inc. [Member] | In-Process Research and Development [Member]
Net Assets Acquired [Abstract]
Indefinite-lived intangible assets			1.6
Finesse Solutions, Inc. [Member] | Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets			67.7
Finesse Solutions, Inc. [Member] | Product Technology [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets			32.0
Finesse Solutions, Inc. [Member] | Tradenames and other [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets			$ 2.2
Other [Member]
Purchase Price
Cash paid				$ 45.6
Debt assumed				0.2
Fair value of contingent consideration				3.1
Cash acquired				(6.0)
Total Purchase Price				42.9
Net Assets Acquired [Abstract]
Current assets				4.3
Property, plant and equipment				0.7
Goodwill				27.2
Deferred tax liabilities				(7.7)
Other liabilities assumed				(1.7)
Total Purchase Price				42.9
Other [Member] | Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets				15.1
Other [Member] | Product Technology [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets				$ 5.0