Severance and Restructuring Costs (Details) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017 USD ($) Employees	Jun. 24, 2016 USD ($)	Jun. 30, 2017 USD ($) Employees	Jun. 24, 2016 USD ($)	Dec. 31, 2016 USD ($) Employees
Restructuring Cost and Reserve [Line Items]
Number of employees of restructuring costs | Employees	400		400		700
Remaining balance of employee severance and restructuring costs	$ 16		$ 16		$ 9
Severance and restructuring costs	12	$ 4	26	$ 6	$ 17
Electronic Systems [Member]
Restructuring Cost and Reserve [Line Items]
Severance and restructuring costs	2	2	5	2
Aerospace Systems [Member]
Restructuring Cost and Reserve [Line Items]
Severance and restructuring costs	1	0	1	0
Communication Systems [Member]
Restructuring Cost and Reserve [Line Items]
Severance and restructuring costs	9	1	18	2
Sensor Systems [Member]
Restructuring Cost and Reserve [Line Items]
Severance and restructuring costs	$ 0	$ 1	$ 2	$ 2