Revenue - Revenue by Geographic Area (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) country	Dec. 31, 2019 USD ($) country	Dec. 31, 2018 USD ($) country
Revenue from External Customer [Line Items]
Revenues	$ 6,675	$ 6,260	$ 5,825
Revenue by country, exceeded	$ 100	$ 100
Revenue by country, exceeded, number of countries | country	11,000,000	11,000,000	10,000,000
Contract Manufacturing and Human Health Diagnostics [Member]
Revenue from External Customer [Line Items]
Revenues	$ 83	$ 85	$ 58
United States
Revenue from External Customer [Line Items]
Revenues	3,557	3,203	2,877
AUSTRALIA
Revenue from External Customer [Line Items]
Revenues	207	196	189
BRAZIL
Revenue from External Customer [Line Items]
Revenues	258	293	295
CANADA
Revenue from External Customer [Line Items]
Revenues	210	206	203
CHILE
Revenue from External Customer [Line Items]
Revenues	100	91	76
CHINA
Revenue from External Customer [Line Items]
Revenues	266	200	211
FRANCE
Revenue from External Customer [Line Items]
Revenues	118	117	130
GERMANY
Revenue from External Customer [Line Items]
Revenues	159	153	147
ITALY
Revenue from External Customer [Line Items]
Revenues	90	112	104
JAPAN
Revenue from External Customer [Line Items]
Revenues	177	158	149
MEXICO
Revenue from External Customer [Line Items]
Revenues	116	117	100
SPAIN
Revenue from External Customer [Line Items]
Revenues	112	114	110
UNITED KINGDOM
Revenue from External Customer [Line Items]
Revenues	178	198	181
Other developed markets
Revenue from External Customer [Line Items]
Revenues	388	370	361
Other emerging markets
Revenue from External Customer [Line Items]
Revenues	656	647	634
Total Geographical Area
Revenue from External Customer [Line Items]
Revenues	$ 6,592	$ 6,175	$ 5,767