XML 146 R130.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Deferred tax liabilities:    
Emissions allowances $ 15 $ 15
Derivatives, net 37 17
Investment in projects 180 337
Discount/premium on notes 0 1
Deferred financing costs 21 2
Other 1 5
Discontinued operations 36 49
Total deferred tax liabilities 290 426
Deferred tax assets:    
Deferred compensation, accrued vacation and other reserves 134 141
Difference between book and tax basis of property 554 611
Goodwill 11 38
Differences between book and tax basis of contracts 38 52
Pension and other postretirement benefits 87 74
Equity compensation 9 10
Bad debt reserve 14 14
U.S. capital loss carryforwards 0 1
U.S. Federal net operating loss carryforwards 2,241 596
Foreign net operating loss carryforwards 62 66
State net operating loss carryforwards 379 128
Foreign capital loss carryforwards 1 1
Federal and state tax credit carryforwards 381 368
Federal benefit on state uncertain tax positions 6 7
Intangibles amortization (excluding goodwill) 21 98
Interest disallowance carryforward per §163(j) of the Tax Act 102 0
Inventory obsolescence 7 12
Discontinued operations 17 185
Total deferred tax assets 4,064 2,402
Valuation allowance (3,812) (1,855)
Discontinued operations 19 (8)
Total deferred tax assets, net of valuation allowance 271 539
NRG's net deferred tax position    
Net deferred tax liability (19)  
Net deferred tax asset   113
Continuing Operations    
NRG's net deferred tax position    
Deferred tax asset 46 6
Deferred tax liability— continuing operations 65 21
Discontinued Operations    
NRG's net deferred tax position    
Deferred tax asset $ 0 $ 128