CONSOLIDATED STATEMENT OF RETAINED EARNINGS (Unaudited) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
CONSOLIDATED STATEMENT OF RETAINED EARNINGS (Unaudited) [Abstract]
Retained earnings at beginning of period	$ 4,716	$ 5,788	$ 4,969	$ 5,676
Net loss	(179)	(168)	(425)	(49)
Loss from issuance of treasury stock	(1)	0	(8)	(7)
Retained earnings at end of period	$ 4,536	$ 5,620	$ 4,536	$ 5,620