Reorganization of Business - Net Charges Incurred by Business Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 41	$ 12	$ 59	$ 20
Products and Systems Integration
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	33	9	47	16
Software and Services
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 8	$ 3	$ 12	$ 4