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Consolidated Statements Of Operations (Parenthetical) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income from operations of discontinued businesses, income tax expense	$ (23)	$ (266)	$ 48
Gain (loss) from disposal of discontinued businesses, income tax expense	$ 300	$ 132	$ 0

Income tax expense or benefit attributable to Income or Loss from discontinued operations during the phase-out period.

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- Definition

Tax expense or benefit on the gain (loss), not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.

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