Commitments And Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014 agreement employee	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies [Line Items]
Total expense under operating leases	$ 297,000,000	$ 309,000,000	$ 298,000,000
Letters of credit	1,000,000,000
Number of company-negotiated labor agreements	55
Number of collective agreements expected to be renegotiated	15
Number of employees covered by expected renegotiated collective agreements	2,400
Contract Termination | European Land Systems
Commitments and Contingencies [Line Items]
Estimate of remaining costs to close-out contract			$ 258,000,000
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%