Acquisitions Purchase Price (Details) - USD ($) $ / shares in Units, $ in Millions				12 Months Ended
	Apr. 30, 2019	Oct. 25, 2018	Aug. 29, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Oct. 31, 2016
Purchase Price
Cash paid				$ 1,879	$ 532	$ 7,333
Debt Assumed						488
Fair Value of Contingent Consideration					11	17
Fair Value of Equity Awards Exchanged						6
Fair Value of Previously Held Interest						11
Cash Acquired				(36)	(1)	(72)
Total Purchase Price				1,843	542	7,783
Net Assets Acquired [Abstract]
Current assets				110	57	1,101
Property, plant and equipment				249	42	1,246
Goodwill				947	161	3,539
Other assets				49	14	54
Contract Liabilities				(110)
Deferred tax liabilities				(116)	(7)	(1,133)
Other liabilities assumed				(109)	(14)	(970)
Total Net Assets Acquired				$ 1,843	$ 542	$ 7,783
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years)				14 years	13 years	16 years
In-Process Research and Development [Member]
Net Assets Acquired [Abstract]
Indefinite-lived intangible assets					$ 10	$ 2
Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets				$ 744	$ 108	$ 3,731
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years)				14 years	14 years	17 years
Product Technology [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets				$ 72	$ 163	$ 96
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years)				13 years	13 years	9 years
Tradenames [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets				$ 7	$ 8	$ 117
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years)				2 years	6 years	4 years
Brammer Bio [Member]
Purchase Price
Cash paid	$ 1,710
Cash Acquired	(36)
Total Purchase Price	1,674
Net Assets Acquired [Abstract]
Current assets	52
Property, plant and equipment	147
Goodwill	938
Other assets	49
Contract Liabilities	(110)
Deferred tax liabilities	(110)
Other liabilities assumed	(108)
Total Net Assets Acquired	1,674
Revenue Reported by Acquired Entity					$ 140
Goodwill, Expected Tax Deductible Amount	405
Brammer Bio [Member] | Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets	744
Brammer Bio [Member] | Product Technology [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets	65
Brammer Bio [Member] | Tradenames [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets	$ 7
Advanced Bioprocessing business [Member]
Purchase Price
Cash paid		$ 477
Total Purchase Price		477
Net Assets Acquired [Abstract]
Current assets		53
Property, plant and equipment		42
Goodwill		146
Deferred tax liabilities		(7)
Other liabilities assumed		(5)
Total Net Assets Acquired		477
Revenue Reported by Acquired Entity						$ 100
Goodwill, Expected Tax Deductible Amount		146
Advanced Bioprocessing business [Member] | Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets		108
Advanced Bioprocessing business [Member] | Product Technology [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets		132
Advanced Bioprocessing business [Member] | Tradenames [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets		$ 8
Patheon N.V. [Member]
Business Acquisition [Line Items]
Business Acquisition, Share Price			$ 35.00
Purchase Price
Cash paid			$ 6,911
Debt Assumed			488
Fair Value of Equity Awards Exchanged			6
Cash Acquired			(47)
Total Purchase Price			7,358
Net Assets Acquired [Abstract]
Current assets			1,062
Property, plant and equipment			1,242
Goodwill			3,276
Other assets			54
Deferred tax liabilities			(1,093)
Other liabilities assumed			(936)
Total Net Assets Acquired			7,358
Revenue Reported by Acquired Entity							$ 1,870
Goodwill, Expected Tax Deductible Amount			125
Patheon N.V. [Member] | Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets			3,641
Patheon N.V. [Member] | Tradenames [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets			$ 112
Other [Member]
Purchase Price
Cash paid				$ 169	55	422
Fair Value of Contingent Consideration					11	17
Fair Value of Previously Held Interest						11
Cash Acquired					(1)	(25)
Total Purchase Price				169	65	425
Net Assets Acquired [Abstract]
Current assets				58	4	39
Property, plant and equipment				102		4
Goodwill				9	15	263
Other assets					14
Deferred tax liabilities				(6)		(40)
Other liabilities assumed				(1)	(9)	(34)
Total Net Assets Acquired				169	65	425
Other [Member] | In-Process Research and Development [Member]
Net Assets Acquired [Abstract]
Indefinite-lived intangible assets					10	2
Other [Member] | Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets						90
Other [Member] | Product Technology [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets				$ 7	$ 31	96
Other [Member] | Tradenames [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets						$ 5