XML 166 R66.htm IDEA: XBRL DOCUMENT

Discontinued Operations and Dispositions (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended	1 Months Ended	3 Months Ended
	Dec. 31, 2011 Energy Holdings [Member]	Jul. 31, 2011 Power [Member] MW	Mar. 31, 2011 Power [Member] MW
Proceeds from Sale of Buildings	$ 215
Sale of gas-fired generation facilities		1,000	1,000
Total purchase price of plant sale		335	352
Gain on disposal of discontinued operations, after tax		25	54
Proceeds from Sale of Loans and Leases Held-for-investment	$ 175

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

The cash inflow from sale of buildings.