Significant Accounting Policies Noncontrolling Interest (Tables)

9 Months Ended

Sep. 30, 2012

Noncontrolling Interest [Line Items]

Schedule of Change in Noncontrolling Interest [Table Text Block]

The following table reflects the changes in NRG's noncontrolling interest balance:

	(In millions)
Balance as of December 31, 2011	$	183
Sale proceeds and cash contributions	284
Comprehensive income attributable to noncontrolling interest	18
Balance as of September 30, 2012	$	485