XML 148 R130.htm IDEA: XBRL DOCUMENT v3.6.0.2
Commitments, Guarantees and Contingencies - Nuclear Insurance, Commitments and Collateral (Details)
$ in Millions
 12 Months Ended
Dec. 06, 2016
Dec. 31, 2016
USD ($)
Nuclear_Power_Plant
Loss Contingencies [Line Items]    
Liability assessed with respect to single nuclear incident   $ 13,300
Plants licensed to operate | Nuclear_Power_Plant   102
Portion of insurance coverage of private insurer included in single nuclear incident   $ 375
Portion of insurance coverage by industry retrospective rating plan   13,000
Losses in excess of private insurance contributed for each nuclear unit license   127
Losses in excess of private insurance contributed for each nuclear unit license per unit   19
Nuclear incidence liability per incident of parent and subsidiary companys based on their present nuclear ownership and leasehold interests   509
Nuclear incident liability not more than in any one year per incident of parent and subsidiary companies based on their present nuclear ownership and leasehold interests   76
Aggregate indemnity   $ 1,400
Waiting period   140 days
Coverage of decontamination costs   $ 2,750
Insurance coverage for replacement power costs   $ 1,060
Environmental plan, submission period   30 days
Outstanding guarantees and other assurances aggregated   $ 3,300
FE    
Loss Contingencies [Line Items]    
Outstanding guarantees and other assurances aggregated   581
Subsidiaries' Guarantees    
Loss Contingencies [Line Items]    
Outstanding guarantees and other assurances aggregated   1,933
Other Guarantees    
Loss Contingencies [Line Items]    
Outstanding guarantees and other assurances aggregated   300
Other Assurances    
Loss Contingencies [Line Items]    
Outstanding guarantees and other assurances aggregated   465
Regulated Distribution    
Loss Contingencies [Line Items]    
Company posted collateral related to net liability positions   3
NG    
Loss Contingencies [Line Items]    
Nuclear incidence liability per incident of parent and subsidiary companys based on their present nuclear ownership and leasehold interests   506
Nuclear incident liability not more than in any one year per incident of parent and subsidiary companies based on their present nuclear ownership and leasehold interests   75
Aggregate indemnity   $ 1,390
FEV | Signal Peak | Senior Secured Term Loan | Senior Loans | Global Holding    
Loss Contingencies [Line Items]    
Investment ownership percentage   33.33%
FES    
Loss Contingencies [Line Items]    
Company posted collateral related to net liability positions   $ 190
WMB Marketing Ventures, LLC | Signal Peak | Senior Secured Term Loan | Senior Loans | Global Holding    
Loss Contingencies [Line Items]    
Investment ownership percentage   33.33%
Global Holding | Senior Secured Term Loan | Senior Loans    
Loss Contingencies [Line Items]    
Long-term debt and other long-term obligations   $ 300
AE Supply    
Loss Contingencies [Line Items]    
Company posted collateral related to net liability positions   $ 4
Revolving Credit Facility | Parent and Certain Subsidiaries    
Loss Contingencies [Line Items]    
Term of revolving credit facility 5 years