Significant Group Concentrations Of Risk (Details) (USD $) In Millions, unless otherwise specified									12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Commercial Aircraft Customers [Member]	Dec. 31, 2011 U.S. Government [Member]	Dec. 31, 2011 Customer Having Less Than Investment-Grade Credit [Member]	Dec. 31, 2011 Aircraft Financing [Member]	Dec. 31, 2011 Workforce Subject To Collective Bargaining Arrangements [Member]	Dec. 31, 2011 Workforce Subject To Collective Bargaining Arrangements Expiring During 2012 [Member]	Dec. 31, 2011 American Airlines [Member]	Dec. 31, 2011 United/Continental Airlines [Member]	Dec. 31, 2011 Hawaiian Airlines [Member]	Dec. 31, 2011 Commercial Aircraft Customers [Member] Customer Financing [Member]	Dec. 31, 2011 Commercial Aircraft Customers [Member] Receivables [Member]
Concentration Risk [Line Items]
Gross accounts receivable and gross customer financing	$ 10,688		$ 4,968	$ 2,950								$ 4,308	$ 660
Gross customer financing	4,842	5,033			2,817
Financing commitments	15,866	9,865			14,697	15,866
Accounts receivable	$ 5,793	$ 5,422
Percentage of total workforce							37.00%	13.00%
Airlines association with company financing portfolio, percentage									14.00%	9.00%	8.00%