Commitments And Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013 agreement employee	Dec. 31, 2012	Dec. 31, 2011
Commitments and Contingencies [Line Items]
Total expense under operating leases	$ 311,000,000	$ 301,000,000	$ 274,000,000
Letters of credit	1,800,000,000
Number of company-negotiated labor agreements	56
Number of collective agreements expected to be renegotiated	11
Number of employees covered by expected renegotiated collective agreements	4,300
European Land Systems
Commitments and Contingencies [Line Items]
Number of vehicles specified in contract		260
European Land Systems | Performance Guarantee
Commitments and Contingencies [Line Items]
Amount customer has drawn on bank guarantees		75,000,000
Bank guarantees outstanding	145,000,000
Termination Of A-12 Program
Commitments and Contingencies [Line Items]
Maximum amount contractors collectively would be required to repay the government	1,400,000,000
Loss Contingency, Settlement Agreement, Consideration	198,000,000
Cash cost, after-tax	129,000,000
Contract Termination | European Land Systems
Commitments and Contingencies [Line Items]
Estimate of remaining costs to close-out contract		$ 258,000,000
Minimum | Termination Of A-12 Program
Commitments and Contingencies [Line Items]
Duration of litigation (in years)	20 years
Maximum
Commitments and Contingencies [Line Items]
Period preceding delivery of aircraft to customer fair market value of trade-in aircraft is established, days, maximum	120 days
Unionized Employees Concentration Risk
Commitments and Contingencies [Line Items]
Percent of employees represented by labor organizations	20.00%