XML 77 R62.htm IDEA: XBRL DOCUMENT v3.19.3
Acquisitions, Discontinued Operations and Dispositions - GenOn and GenMA Settlement (Details) - USD ($)
$ in Millions
9 Months Ended
Jul. 16, 2018
Apr. 27, 2018
Sep. 30, 2019
Sep. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Return of collateral posted to NRG     $ 0.0 $ 26.0
GenOn | Services Agreement | Restructuring Support Agreement        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Return of collateral posted to NRG $ 15.0      
GenOn Mid-Atlantic | Restructuring Support Agreement | Letter of Credit | Intercompany Credit Agreement        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Letters of credit, new credit support   $ 37.5    
Affiliated Entity        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Settlement consideration 261.0      
Professional fees   $ 6.0    
Affiliated Entity | Restructuring Support Agreement        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Settlement agreement, payment 125.0      
Affiliated Entity | Services Agreement | Restructuring Support Agreement        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Transition services credit 28.0      
Related Party Transaction, Due from (to) Related Party 10.0      
Affiliated Entity | Revolving Credit Facility Borrowings | Restructuring Support Agreement        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Borrowings under intercompany agreement 151.0      
Affiliated Entity | Accrued Interest On Borrowings | Restructuring Support Agreement        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Borrowings under intercompany agreement 12.0      
Affiliated Entity | Reduction Of Settlement Payment        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Related Party Transaction, Due from (to) Related Party 4.0      
Affiliated Entity | Assignment Of Historical Claims Against REMA        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Related Party Transaction, Due from (to) Related Party 8.0      
Affiliated Entity | Other | Restructuring Support Agreement        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Related Party Transaction, Due from (to) Related Party $ 2.0