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
Net income				62	62	62
Unrealized loss on investments, net of tax			(1)		(1)	(1)
Balance at Jun. 30, 2010	5	697	(3)	62	61	761
Balance at Dec. 31, 2010	5	682				687
Cash dividends to Boeing (including return of capital)		(160)		(68)		(228)
Net income				70	70	70
Balance at Jun. 30, 2011	$ 5	$ 522		$ 2	$ 70	$ 529