Segment Information (Details 4) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Additional information by Segment (Table Amounts) [Abstract]
Capital Expenditures	$ 364	$ 331	$ 492
Depreciation and Amortization	495	510	544
Aerospace Systems
Additional information by Segment (Table Amounts) [Abstract]
Capital Expenditures	198	154	184
Depreciation and Amortization	210	196	200
Electronic Systems
Additional information by Segment (Table Amounts) [Abstract]
Capital Expenditures	76	84	121
Depreciation and Amortization	134	139	144
Information Systems
Additional information by Segment (Table Amounts) [Abstract]
Capital Expenditures	27	40	45
Depreciation and Amortization	81	100	121
Technical Services
Additional information by Segment (Table Amounts) [Abstract]
Capital Expenditures	3	3	1
Depreciation and Amortization	4	4	4
Corporate
Additional information by Segment (Table Amounts) [Abstract]
Capital Expenditures	60	50	141
Depreciation and Amortization	$ 66	$ 71	$ 75