Revenue - Revenue by Geographic Area (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue from External Customer [Line Items]
Revenue	$ 1,948	$ 1,548	$ 3,819	$ 3,082
United States
Revenue from External Customer [Line Items]
Revenue	1,004	823	1,937	1,609
Australia
Revenue from External Customer [Line Items]
Revenue	69	51	126	94
Brazil
Revenue from External Customer [Line Items]
Revenue	75	56	149	119
Canada
Revenue from External Customer [Line Items]
Revenue	67	54	113	94
Chile
Revenue from External Customer [Line Items]
Revenue	34	25	68	48
China
Revenue from External Customer [Line Items]
Revenue	94	66	217	132
France
Revenue from External Customer [Line Items]
Revenue	32	24	67	53
Germany
Revenue from External Customer [Line Items]
Revenue	50	40	88	74
Italy
Revenue from External Customer [Line Items]
Revenue	32	14	57	35
Japan
Revenue from External Customer [Line Items]
Revenue	50	53	97	94
Mexico
Revenue from External Customer [Line Items]
Revenue	34	26	67	58
Spain
Revenue from External Customer [Line Items]
Revenue	33	24	64	52
United Kingdom
Revenue from External Customer [Line Items]
Revenue	43	26	112	81
Other developed markets
Revenue from External Customer [Line Items]
Revenue	112	90	223	177
Other emerging markets
Revenue from External Customer [Line Items]
Revenue	199	159	398	325
Total geographical area
Revenue from External Customer [Line Items]
Revenue	1,928	1,531	3,783	3,045
Contract manufacturing & human health
Revenue from External Customer [Line Items]
Revenue	$ 20	$ 17	$ 36	$ 37