Valuation And Qualifying Accounts (Schedule Of Allowance For Customer Financing And Other Assets) (Details) (Sea Launch Reserves [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2010
Sea Launch Reserves [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at January 1	$ 969
Deductions from reserves	(969)	[1]
Balance at December 31

[1] During 2010, our claims against Sea Launch were discharged by the bankruptcy court and the related balances and reserves were written off. See Note 11 to our Consolidated Financial Statements for more information regarding amounts receivable from other Sea Launch partners.