Restructuring Programs - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	$ 47	$ 14
Restructuring related reserve	5		$ 8
HCL/TCS
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	$ 19	$ 11