Restructuring Programs - Narrative (Details) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) employee	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, net	$ 10			$ 22	$ 35	$ 41
Net current period charges	3	$ 1	$ 1		5
Asset impairment charges	11			10	23	12
Related restructuring costs	(1)			$ 0	$ 10	(3)
Restructuring charges	5	3	5
Headcount reductions, number of employees | employee					180
Reversals	2	2	4		$ 8
Payments for restructuring					23	38
Restructuring related reserve	9				9		$ 12
HCL/TCS
Restructuring Cost and Reserve [Line Items]
Payments for restructuring					12	$ 4
Severance and Related Costs
Restructuring Cost and Reserve [Line Items]
Net current period charges	4	1	1
Restructuring charges	5	3	5		13
Reversals	1	2	4
Other Contractual Termination Costs
Restructuring Cost and Reserve [Line Items]
Net current period charges	(1)	0	0
Restructuring charges	0	0	0
Reversals	$ 1	$ 0	$ 0
Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, net					35
Net current period charges					5
Asset impairment charges					20
Related restructuring costs					$ 10