Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Statement of Other Comprehensive Income [Abstract]
Net Earnings (Loss)	$ (341)	$ (1,660)
Defined benefit pension plans and retiree medical:
Amortization of actuarial loss and prior service cost	(33)	56
Current year change	0	2
amr OtherComprehensiveIncomeBenefitPlanModifications	0	0
Derivative financial instruments:
Change in fair value	(15)	48
Reclassification into earnings	(1)	(26)
Unrealized gain (loss) on investments
Net change in value	(1)	0
Other Comprehensive Income (Loss) Before Tax	(50)	80
Income tax expense on other comprehensive income	0	0
Comprehensive Income (Loss)	$ (391)	$ (1,580)