Consolidated Statements Of Stockholders' Equity (Deficit) (USD $) In Millions	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings (Accumulated Deficit) [Member]
Beginning Balance at Dec. 31, 2009	$ (5,878)	$ 0	$ 3,938	$ (2,833)	$ (6,983)
Net loss	(469)				(469)
Changes in pension, retiree medical and other liability	(247)			(247)
Net changes in fair value of derivative financial instruments	216			216
Unrealized gain on investments	(1)			(1)
Non-cash tax provision	0
Comprehensive Income (Loss)	(501)
Reclassification and amortization of stock compensation plans	43		43
Ending Balance at Dec. 31, 2010	(6,336)	0	3,981	(2,865)	(7,452)
Net loss	(1,965)				(1,965)
Changes in pension, retiree medical and other liability	(1,086)			(1,086)
Net changes in fair value of derivative financial instruments	(123)			(123)
Unrealized gain on investments	(1)			(1)
Non-cash tax provision	0
Comprehensive Income (Loss)	(3,175)
Reclassification and amortization of stock compensation plans	24		24
Intercompany equity transfer	450		450
Ending Balance at Dec. 31, 2011	(9,037)	0	4,455	(4,075)	(9,417)
Net loss	(1,926)				(1,926)
Changes in pension, retiree medical and other liability	1,565			1,565
Net changes in fair value of derivative financial instruments	(15)			(15)
Non-cash tax provision	(569)			(569)
Unrealized gain on investments	6			6
Comprehensive Income (Loss)	(939)
Reclassification and amortization of stock compensation plans	14		14
Ending Balance at Dec. 31, 2012	$ (9,962)	$ 0	$ 4,469	$ (3,088)	$ (11,343)