XML 14 R3.htm IDEA: XBRL DOCUMENT v3.8.0.1
Condensed Consolidated Statements of Comprehensive Income/(Loss) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Statement of Comprehensive Income [Abstract]    
Net income/(loss) $ 233 $ (203)
Other comprehensive income/(loss), net of tax    
Unrealized gain on derivatives, net of income tax expense of $0 and $1 14 4
Foreign currency translation adjustments, net of income tax expense of $0 and $0 (2) 7
Defined benefit plans, net of income tax expense of $0 and $0 (1) 0
Other comprehensive income 11 11
Comprehensive Income/(Loss) 244 (192)
Less: Comprehensive (loss)/income attributable to noncontrolling interest and redeemable noncontrolling interest (38) (39)
Comprehensive Income/(Loss) Attributable to NRG Energy, Inc. 282 (153)
Comprehensive income/(loss) Available for Common Stockholders $ 282 $ (153)