Condensed Consolidated Statements Of Shareholder's Equity And Comprehensive Income (USD $) In Millions	Common Shares [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Comprehensive Income [Member]	Total
Balance at Dec. 31, 2009	$ 5	$ 696	$ (2)			$ 699
Non-cash capital contributions from Boeing		1				1
Cash dividends to Boeing (including return of capital)				(90)		(90)
Net income				90	90	90
Unrealized gain on investments, net of tax			5		5	5
Balance at Sep. 30, 2010	5	697	3		95	705
Balance at Dec. 31, 2010	5	682				687
Non-cash capital contributions from Boeing		1				1
Cash dividends to Boeing (including return of capital)		(160)		(68)		(228)
Net income				88	88	88
Balance at Sep. 30, 2011	$ 5	$ 523		$ 20	$ 88	$ 548