Valuation And Qualifying Accounts (Schedule Of Allowance For Customer Financing And Other Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010		Dec. 31, 2009
Valuation and Qualifying Accounts Disclosure [Line Items]
(Deductions from)/charges to costs and expenses				$ 67
Amount in additions charged to accrued liabilities				179
Allowance For Loan And Lease Losses [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at January 1	353	302		269
(Deductions from)/charges to costs and expenses	(269)	51		45
Deductions from reserves	(14)			(12)
Balance at December 31	70	353		302
Sea Launch Reserves [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at January 1		969		723
Additions				246	[1]
Deductions from reserves		(969)	[2]
Balance at December 31				$ 969

[1] Additions in 2009 included $179 transferred in from Accrued liabilities and $67 in charges to costs and expenses.

[2] 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