Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 1,760	$ 1,497	$ 3,227	$ 2,777
Products and Systems Integration
Disaggregation of Revenue [Line Items]
Net sales	1,189	1,047	2,141	1,901
Products and Systems Integration | Direct
Disaggregation of Revenue [Line Items]
Net sales	740		1,357
Products and Systems Integration | Indirect
Disaggregation of Revenue [Line Items]
Net sales	449		784
Products and Systems Integration | Devices
Disaggregation of Revenue [Line Items]
Net sales	725		1,356
Products and Systems Integration | Systems and Systems Integration
Disaggregation of Revenue [Line Items]
Net sales	464		785
Products and Systems Integration | Services
Disaggregation of Revenue [Line Items]
Net sales	0		0
Products and Systems Integration | Software
Disaggregation of Revenue [Line Items]
Net sales	0		0
Products and Systems Integration | Americas
Disaggregation of Revenue [Line Items]
Net sales	878		1,576
Products and Systems Integration | EMEA
Disaggregation of Revenue [Line Items]
Net sales	188		345
Products and Systems Integration | AP
Disaggregation of Revenue [Line Items]
Net sales	123		220
Services and Software
Disaggregation of Revenue [Line Items]
Net sales	571	$ 450	1,086	$ 876
Services and Software | Direct
Disaggregation of Revenue [Line Items]
Net sales	537		1,042
Services and Software | Indirect
Disaggregation of Revenue [Line Items]
Net sales	34		44
Services and Software | Devices
Disaggregation of Revenue [Line Items]
Net sales	0		0
Services and Software | Systems and Systems Integration
Disaggregation of Revenue [Line Items]
Net sales	0		0
Services and Software | Services
Disaggregation of Revenue [Line Items]
Net sales	456		902
Services and Software | Software
Disaggregation of Revenue [Line Items]
Net sales	115		184
Services and Software | Americas
Disaggregation of Revenue [Line Items]
Net sales	331		627
Services and Software | EMEA
Disaggregation of Revenue [Line Items]
Net sales	194		375
Services and Software | AP
Disaggregation of Revenue [Line Items]
Net sales	$ 46		$ 84