The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits.

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+ Details

Employee Severance and Termination Costs - Employee Severance and Other Termination Costs Incurred by Reportable Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 29, 2013	Mar. 30, 2012	Dec. 31, 2012
Reportable Segment
Employee severance and other related termination costs	$ 5	$ 7	$ 23
Electronic Systems [Member]
Reportable Segment
Employee severance and other related termination costs	4	4
P&LS [Member]
Reportable Segment
Employee severance and other related termination costs		3
NSS [Member]
Reportable Segment
Employee severance and other related termination costs	$ 1