Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified						6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Performance Guarantee [Member] C-17 Program [Member]	Jun. 30, 2012 Environmental Remediation Expense [Member]	Dec. 31, 2011 Environmental Remediation Expense [Member]	Jun. 30, 2012 USAF [Member] C-17 Program [Member] aircraft	Jun. 30, 2012 International [Member] C-17 Program [Member] aircraft
Liabilities Commitments And Contingencies [Line Items]
Financing commitments	$ 20,267	$ 15,866
Contingent liabilities on outstanding letters of credit agreements and surety bonds	5,036	6,199
Total contractual trade-in value of commercial aircraft	769	273
Fair value of trade-in aircraft related to probable contractual trade-in commitments	92	27
Expiration date of trade in commitment agreements, minimum	2012
Expiration date of trade in commitment agreements, maximum	2023
Commitment to provide ULA with additional capital contributions, maximum	403
Amount by which estimated range of reasonably possible remediation costs exceeded recorded liabilities				966	1,003
Number of C-17 orders included in backlog						7	13
Loss contingency, estimate of possible loss			$ 80