Business Segment and Geographic Area Information (Narrative) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Business Segment and Geographic Area information [Line Items]
Number of Reportable Segments	1
U.S. Army Tank-Automotive Armament Command (TACOM) [Member] | Revenues [Member]
Schedule of Business Segment and Geographic Area information [Line Items]
Percentage	19.40%	22.20%	17.00%
U.S. Army Tank-Automotive Armament Command (TACOM) [Member] | Operating Income (excluding the goodwill impairment) [Member]
Schedule of Business Segment and Geographic Area information [Line Items]
Percentage	12.80%	19.30%	17.30%
U.S. government under prime contracts and subcontracts [Member] | Revenues [Member]
Schedule of Business Segment and Geographic Area information [Line Items]
Percentage	99.00%	99.20%	99.20%