Segment Information (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 24, 2010	Sep. 24, 2010	Sep. 30, 2011 Year Employee Segment	Dec. 31, 2010
Segment Information (Textuals)
Number of segments			4
Sales reclassified from Government Services segment to Electronic Systems segment as a result of business unit re-alignments	$ 27	$ 90
Sales reclassified from C3ISR Segment to Government Services segment as a result of business unit re-alignments	20	58
Operating income reclassified from Government Services segment to Electronic Systems segment as a result of business unit re-alignments	2	8
Operating income reclassified from C3ISR segment to Government Services segment as a result of business unit re-alignments	2	4
Assets reclassified from Government Services segment to Electronic Systems segment as a result of business unit re-alignments				129
Assets reclassified from C3ISR segment to Government Services segment as a result of business unit re-alignments				$ 19

Assets reclassified from C3ISR segment to Government Services segment as a result of business unit re-alignments.

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Assets reclassified from Government Services segment to Electronic Systems segment as a result of business unit re-alignments.

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Number of segments.

Operating income reclassified from C3ISR segment to Government Services segment as a result of business unit re-alignments.

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Operating income reclassified from Government Services segment to Electronic Systems segment as a result of business unit re-alignments.

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Sales reclassified from C3ISR segment to Government Services segment as a result of business unit re-alignments.

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Sales reclassified from Government Services segment to Electronic Systems segment as a result of business unit re-alignments.

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Segment Information Textuals Abstract.

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