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Condensed Consolidated Statements Of Operations (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income from operations of discontinued businesses, income tax expense (benefit)	$ (1)	$ 2
Gain/(loss) from disposal of discontinued businesses, income tax expense (benefit)	$ (1)	$ 0

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

Amount of tax expense or benefit on gain (loss), not previously recognized, resulting from the sale of a business component.