Description of business, including segment and geographic area information - Geographic Area Information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Revenue		$ 4,742	$ 4,151	$ 13,259	$ 11,634
Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenue		$ 4,742	$ 4,151	$ 13,259	$ 11,634
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]
Revenue		$ 1,859	$ 1,639	$ 5,084	$ 4,335
Concentration risk, percentage		39.00%	39.00%	38.00%	37.00%
China | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenue		$ 1,019	$ 823	$ 2,830	$ 2,191
Concentration risk, percentage		21.00%	20.00%	21.00%	19.00%
Rest of Asia | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenue		$ 505	$ 431	$ 1,430	$ 1,249
Concentration risk, percentage		11.00%	10.00%	11.00%	11.00%
Europe, Middle East and Africa | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenue	[1]	$ 972	$ 880	$ 2,799	$ 2,733
Concentration risk, percentage	[1]	20.00%	21.00%	21.00%	23.00%
Japan | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenue		$ 313	$ 313	$ 883	$ 935
Concentration risk, percentage		7.00%	8.00%	7.00%	8.00%
Rest of world | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenue		$ 74	$ 65	$ 233	$ 191
Concentration risk, percentage		2.00%	2.00%	2.00%	2.00%
Germany | Revenue from Contract with Customer, Product and Service Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percentage		10.00%	11.00%	10.00%	12.00%

[1] Revenue from end customers headquartered in Germany was 10% and 11% in the third quarters of 2025 and 2024, respectively, and 10% and 12% in the first nine months of 2025 and 2024, respectively.