Description of business, including segment and geographic area information - Geographic Area Information (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Total revenue		$ 3,239	$ 3,668	$ 6,568	$ 7,262
United States
Segment Reporting Information [Line Items]
Total revenue		349	487	739	964
Asia
Segment Reporting Information [Line Items]
Total revenue	[1]	2,174	2,157	4,201	4,249
Europe, Middle East and Africa
Segment Reporting Information [Line Items]
Total revenue		451	709	1,070	1,452
Japan
Segment Reporting Information [Line Items]
Total revenue		193	218	383	409
Rest of world
Segment Reporting Information [Line Items]
Total revenue		72	97	175	188
China
Segment Reporting Information [Line Items]
Total revenue		$ 1,800	$ 1,800	$ 3,500	$ 3,500

[1] Revenue from products shipped into China was $1.8 billion for the second quarters of both 2020 and 2019, and $3.5 billion for the first six months of both 2020 and 2019, which includes shipments to customers that manufacture in China and then export end products to their customers around the world, as well as distributors that transship inventory through China to service other countries.