Severance and Restructuring Related Costs (Details) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 30, 2018 USD ($) Employees	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) Employees
Restructuring Cost and Reserve [Line Items]
Severance and restructuring related costs	$ 8		$ 101
Number of employees of restructuring costs | Employees	200		1,500
Remaining balance of employee severance and restructuring costs	$ 14		$ 23
Electronic Systems [Member]
Restructuring Cost and Reserve [Line Items]
Severance and restructuring related costs	2	$ 3
Aerospace Systems [Member]
Restructuring Cost and Reserve [Line Items]
Severance and restructuring related costs	1	0
Communication Systems [Member]
Restructuring Cost and Reserve [Line Items]
Severance and restructuring related costs	5	9
Sensor Systems [Member]
Restructuring Cost and Reserve [Line Items]
Severance and restructuring related costs	0	2
Consolidated [Member]
Restructuring Cost and Reserve [Line Items]
Severance and restructuring related costs	$ 8	$ 14