This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items before deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Publisher SEC

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+ Details

Discontinued Operations (Details Textuals) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Discontinued Operations (Textuals) [Abstract]
Real Estate Held-for-sale	$ 1				$ 184				$ 1	$ 184
Income (loss) from discontinued operations, net of income tax	25	5	31	(41)	19	3	11	6	20	39	58
Real Estate [Member]
Discontinued Operations (Textuals) [Abstract]
Real Estate Held-for-sale	1				184				1	184
Income (loss) from discontinued operations, net of income tax									$ 64	$ 11	$ 19