Description of business, including segment and geographic area information - Geographic Area Information (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Total revenue		$ 3,822	$ 4,531	$ 7,483	$ 8,910
Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Total revenue		$ 3,822	$ 4,531	$ 7,483	$ 8,910
Concentration risk, percentage		100.00%	100.00%	100.00%	100.00%
United States | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Total revenue		$ 1,408	$ 1,493	$ 2,696	$ 2,850
Concentration risk, percentage		37.00%	33.00%	36.00%	32.00%
China | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Total revenue		$ 745	$ 872	$ 1,368	$ 1,748
Concentration risk, percentage		19.00%	19.00%	18.00%	20.00%
Rest of Asia | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Total revenue		$ 417	$ 435	$ 818	$ 829
Concentration risk, percentage		11.00%	10.00%	11.00%	9.00%
Europe, Middle East and Africa | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Total revenue	[1]	$ 898	$ 1,194	$ 1,853	$ 2,464
Concentration risk, percentage	[1]	23.00%	26.00%	25.00%	28.00%
Japan | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Total revenue		$ 292	$ 480	$ 622	$ 918
Concentration risk, percentage		8.00%	11.00%	8.00%	10.00%
Rest of world | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Total revenue		$ 62	$ 57	$ 126	$ 101
Concentration risk, percentage		2.00%	1.00%	2.00%	1.00%
Germany | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percentage		11.00%	13.00%	12.00%	13.00%

[1] Revenue from end customers headquartered in Germany was 11% and 13% in the second quarters of 2024 and 2023, respectively, and 12% and 13% in the first six months of 2024 and 2023, respectively.