Document and Entity Information
Document and Entity Information | 6 Months Ended |
Jun. 30, 2016shares | |
Document and Entity Information [Line Items] | |
Entity Registrant Name | GenOn Energy, Inc. |
Entity Central Index Key | 1,126,294 |
Current Fiscal Year End Date | --12-31 |
Entity Filer Category | Non-accelerated Filer |
Document Type | 10-Q |
Document Period End Date | Jun. 30, 2016 |
Document Fiscal Year Focus | 2,016 |
Document Fiscal Period Focus | Q2 |
Amendment Flag | false |
Entity Common Stock, Shares Outstanding | 1 |
Entity Well-known Seasoned Issuer | No |
Entity Voluntary Filers | Yes |
Entity Current Reporting Status | Yes |
GenOn Americas Generation | |
Document and Entity Information [Line Items] | |
Entity Registrant Name | GenOn Americas Generation, LCC |
Entity Central Index Key | 1,140,761 |
Current Fiscal Year End Date | --12-31 |
Entity Filer Category | Non-accelerated Filer |
Document Fiscal Year Focus | 2,016 |
Document Fiscal Period Focus | Q2 |
Entity Common Stock, Shares Outstanding | 0 |
Entity Well-known Seasoned Issuer | No |
Entity Voluntary Filers | Yes |
Entity Current Reporting Status | Yes |
GenOn Mid-Atlantic | |
Document and Entity Information [Line Items] | |
Entity Registrant Name | GenOn Mid-Atlantic, LLC |
Entity Central Index Key | 1,138,258 |
Current Fiscal Year End Date | --12-31 |
Entity Filer Category | Non-accelerated Filer |
Document Fiscal Year Focus | 2,016 |
Document Fiscal Period Focus | Q2 |
Entity Common Stock, Shares Outstanding | 0 |
Entity Well-known Seasoned Issuer | No |
Entity Voluntary Filers | Yes |
Entity Current Reporting Status | Yes |
CONDENSED CONSOLIDATED STATEMEN
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | |
Operating Revenues | ||||
Total operating revenues | $ 398 | $ 560 | $ 977 | $ 1,317 |
Operating Costs and Expenses | ||||
Depreciation and amortization | 47 | 55 | 94 | 111 |
Impairment of Long-Lived Assets Held-for-use | 59 | 0 | 59 | 0 |
Total operating costs and expenses | 474 | 530 | 941 | 1,249 |
Gain (Loss) on Disposition of Other Assets | 0 | 0 | 32 | 0 |
Operating (Loss)/Income | (76) | 30 | 68 | 68 |
Other Income/(Expense) | ||||
Other income, net | 3 | 1 | 4 | 4 |
Total other expense | (40) | (48) | (84) | (98) |
Loss Before Income Taxes | (116) | (18) | (16) | (30) |
Income tax benefit | 0 | 0 | (1) | (1) |
Net Loss | (116) | (18) | (15) | (29) |
GenOn Americas Generation | ||||
Operating Revenues | ||||
Total operating revenues | 340 | 514 | 828 | 1,240 |
Operating Costs and Expenses | ||||
Depreciation and amortization | 19 | 20 | 38 | 37 |
Total operating costs and expenses | 368 | 503 | 786 | 1,218 |
Gain (Loss) on Disposition of Other Assets | 0 | 0 | 3 | 0 |
Operating (Loss)/Income | (28) | 11 | 45 | 22 |
Other Income/(Expense) | ||||
Other income, net | 1 | 0 | 1 | 0 |
Total other expense | (13) | (17) | (28) | (35) |
Loss Before Income Taxes | (41) | (6) | 17 | (13) |
Income tax benefit | 0 | 0 | 0 | 0 |
Net Loss | (41) | (6) | 17 | (13) |
GenOn Mid-Atlantic | ||||
Operating Revenues | ||||
Total operating revenues | 122 | 196 | 355 | 472 |
Operating Costs and Expenses | ||||
Depreciation and amortization | 14 | 17 | 29 | 33 |
Total operating costs and expenses | 157 | 191 | 347 | 443 |
Operating (Loss)/Income | (35) | 5 | 8 | 29 |
Other Income/(Expense) | ||||
Total other expense | (2) | (1) | (2) | (2) |
Loss Before Income Taxes | (37) | 4 | 6 | 27 |
Income tax benefit | 0 | 0 | 0 | 0 |
Net Loss | (37) | 4 | 6 | 27 |
Non-affiliate | ||||
Operating Revenues | ||||
Total operating revenues | 397 | 556 | 971 | 1,308 |
Operating Costs and Expenses | ||||
Cost of operations | 258 | 384 | 585 | 908 |
Selling, general and administrative | 2 | 0 | 4 | 1 |
Other Income/(Expense) | ||||
Interest expense | (40) | (47) | (82) | (97) |
Non-affiliate | GenOn Americas Generation | ||||
Operating Revenues | ||||
Total operating revenues | 364 | 518 | 868 | 1,221 |
Operating Costs and Expenses | ||||
Cost of operations | 155 | 207 | 338 | 530 |
Other Income/(Expense) | ||||
Interest expense | (12) | (16) | (25) | (32) |
Non-affiliate | GenOn Mid-Atlantic | ||||
Operating Revenues | ||||
Total operating revenues | 0 | (1) | 0 | 4 |
Operating Costs and Expenses | ||||
Cost of operations | 117 | 135 | 257 | 299 |
Other Income/(Expense) | ||||
Interest expense | 0 | (1) | 0 | (1) |
Affiliate | ||||
Operating Revenues | ||||
Total operating revenues | 1 | 4 | 6 | 9 |
Operating Costs and Expenses | ||||
Cost of operations | 61 | 43 | 106 | 132 |
Selling, general and administrative | 47 | 48 | 93 | 97 |
Other Income/(Expense) | ||||
Interest expense | (3) | (2) | (6) | (5) |
Affiliate | GenOn Americas Generation | ||||
Operating Revenues | ||||
Total operating revenues | (24) | (4) | (40) | 19 |
Operating Costs and Expenses | ||||
Cost of operations | 174 | 256 | 369 | 610 |
Selling, general and administrative | 20 | 20 | 41 | 41 |
Other Income/(Expense) | ||||
Interest expense | (2) | (1) | (4) | (3) |
Affiliate | GenOn Mid-Atlantic | ||||
Operating Revenues | ||||
Total operating revenues | 122 | 197 | 355 | 468 |
Operating Costs and Expenses | ||||
Cost of operations | 11 | 25 | 31 | 82 |
Selling, general and administrative | 15 | 14 | 30 | 29 |
Other Income/(Expense) | ||||
Interest expense | $ (2) | $ 0 | $ (2) | $ (1) |
CONDENSED CONSOLIDATED STATEME3
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | |
Net Loss | $ (116) | $ (18) | $ (15) | $ (29) |
Other comprehensive income net of reclassifications, net of tax of $0: | ||||
Defined benefit plans | 0 | (1) | 0 | (2) |
Other comprehensive loss | (1) | (2) | ||
Comprehensive Loss | $ (116) | $ (19) | $ (15) | $ (31) |
CONDENSED CONSOLIDATED STATEME4
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) Parenthetical - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | |
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent | $ 0 | $ 0 | $ 0 | $ 0 |
CONDENSED CONSOLIDATED BALANCE
CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions | Jun. 30, 2016 | Dec. 31, 2015 |
Current Assets | ||
Cash and cash equivalents | $ 641 | $ 665 |
Funds deposited by counterparties | 43 | 51 |
Accounts receivable — trade | 107 | 97 |
Inventory | 407 | 448 |
Cash collateral paid in support of energy risk management activities | 75 | 48 |
Prepaid rent and other current assets | 133 | 139 |
Disposal Group, Including Discontinued Operation, Other Assets, Current | 2 | 6 |
Total current assets | 1,728 | 2,028 |
Property, Plant and Equipment | ||
Property, plant and equipment, net of accumulated depreciation of $586 and $614 | 2,728 | 2,831 |
Other Assets | ||
Intangible assets, net of accumulated amortization of $60 and $40 | 69 | 74 |
Other non-current assets | 294 | 253 |
Disposal Group, Including Discontinued Operation, Assets, Noncurrent | 175 | 105 |
Total other assets | 677 | 587 |
Total Assets | 5,133 | 5,446 |
Current Liabilities | ||
Current portion of long-term debt and capital leases | 711 | 4 |
Cash collateral received in support of energy risk management activities | 43 | 51 |
Accrued expenses and other current liabilities | 184 | 201 |
Disposal Group, Including Discontinued Operation, Liabilities, Current | 2 | 2 |
Total current liabilities | 1,433 | 916 |
Other Liabilities | ||
Long-term debt and capital leases | 2,026 | 2,762 |
Out-of-market contracts | 851 | 892 |
Other non-current liabilities | 473 | 484 |
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent | 0 | 4 |
Total non-current liabilities | 3,443 | 4,258 |
Total Liabilities | 4,876 | 5,174 |
Stockholder's Equity | ||
Common stock: $0.001 par value, 1 share authorized and issued at June 30, 2016 and December 31, 2015 | 0 | 0 |
Additional paid-in capital | 325 | 325 |
Retained earnings | (52) | (37) |
Accumulated other comprehensive loss | (16) | (16) |
Total Stockholder's Equity | 257 | 272 |
Total Liabilities and Stockholder's Equity | 5,133 | 5,446 |
GenOn Mid-Atlantic | ||
Current Assets | ||
Cash and cash equivalents | 324 | 299 |
Inventory | 141 | 172 |
Prepaid rent and other current assets | 71 | 79 |
Total current assets | 712 | 821 |
Property, Plant and Equipment | ||
Property, plant and equipment, net of accumulated depreciation of $586 and $614 | 924 | 925 |
Other Assets | ||
Intangible assets, net of accumulated amortization of $60 and $40 | 10 | 13 |
Other non-current assets | 219 | 125 |
Total other assets | 278 | 221 |
Total Assets | 1,914 | 1,967 |
Current Liabilities | ||
Accrued expenses and other current liabilities | 68 | 75 |
Total current liabilities | 210 | 267 |
Other Liabilities | ||
Out-of-market contracts | 506 | 520 |
Other non-current liabilities | 60 | 50 |
Total non-current liabilities | 600 | 602 |
Total Liabilities | 810 | 869 |
Stockholder's Equity | ||
Total Liabilities and Stockholder's Equity | 1,914 | 1,967 |
Member's Equity | ||
Member’s interest | 1,104 | 1,098 |
GenOn Americas Generation | ||
Current Assets | ||
Cash and cash equivalents | 281 | 246 |
Funds deposited by counterparties | 43 | 51 |
Accounts receivable — trade | 92 | 86 |
Inventory | 259 | 289 |
Cash collateral paid in support of energy risk management activities | 73 | 39 |
Prepaid rent and other current assets | 76 | 84 |
Total current assets | 1,651 | 1,987 |
Property, Plant and Equipment | ||
Property, plant and equipment, net of accumulated depreciation of $586 and $614 | 1,129 | 1,116 |
Other Assets | ||
Intangible assets, net of accumulated amortization of $60 and $40 | 68 | 73 |
Other non-current assets | 225 | 131 |
Total other assets | 488 | 439 |
Total Assets | 3,268 | 3,542 |
Current Liabilities | ||
Cash collateral received in support of energy risk management activities | 43 | 51 |
Accrued expenses and other current liabilities | 93 | 104 |
Total current liabilities | 749 | 1,049 |
Other Liabilities | ||
Long-term debt and capital leases | 748 | 752 |
Out-of-market contracts | 506 | 520 |
Other non-current liabilities | 135 | 107 |
Total non-current liabilities | 1,570 | 1,561 |
Total Liabilities | 2,319 | 2,610 |
Stockholder's Equity | ||
Total Liabilities and Stockholder's Equity | 3,268 | 3,542 |
Member's Equity | ||
Member’s interest | 949 | 932 |
Non-affiliate | ||
Current Assets | ||
Derivative instruments | 311 | 544 |
Other Assets | ||
Derivative instruments | 138 | 154 |
Current Liabilities | ||
Accounts payable | 109 | 112 |
Derivative instruments | 304 | 465 |
Other Liabilities | ||
Derivative instruments | 85 | 102 |
Non-affiliate | GenOn Mid-Atlantic | ||
Current Assets | ||
Accounts receivable — trade | 1 | 2 |
Current Liabilities | ||
Accounts payable | 26 | 21 |
Non-affiliate | GenOn Americas Generation | ||
Current Assets | ||
Derivative instruments | 311 | 545 |
Other Assets | ||
Derivative instruments | 138 | 154 |
Current Liabilities | ||
Accounts payable | 58 | 48 |
Derivative instruments | 304 | 465 |
Other Liabilities | ||
Derivative instruments | 85 | 102 |
Affiliate | ||
Current Assets | ||
Derivative instruments | 9 | 30 |
Other Assets | ||
Derivative instruments | 1 | 1 |
Current Liabilities | ||
Accounts payable | 75 | 71 |
Derivative instruments | 5 | 10 |
Other Liabilities | ||
Derivative instruments | 8 | 14 |
Affiliate | GenOn Mid-Atlantic | ||
Current Assets | ||
Accounts receivable — trade | 34 | 0 |
Derivative instruments | 141 | 269 |
Other Assets | ||
Derivative instruments | 49 | 83 |
Current Liabilities | ||
Accounts payable | 0 | 8 |
Derivative instruments | 116 | 163 |
Other Liabilities | ||
Derivative instruments | 34 | 32 |
Affiliate | GenOn Americas Generation | ||
Current Assets | ||
Notes Receivable, Related Parties, Current | 331 | 331 |
Derivative instruments | 185 | 316 |
Other Assets | ||
Derivative instruments | 57 | 81 |
Current Liabilities | ||
Accounts payable | 78 | 109 |
Derivative instruments | 173 | 272 |
Other Liabilities | ||
Derivative instruments | $ 96 | $ 80 |
CONDENSED CONSOLIDATED BALANCE6
CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions | Jun. 30, 2016 | Dec. 31, 2015 |
Property, plant and equipment, accumulated depreciation | $ 586 | $ 614 |
Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
Common stock, shares authorized (in shares) | 1 | 1 |
Common stock, shares issued (in shares) | 1 | 1 |
Intangible assets, accumulated amortization | $ 60 | $ 40 |
GenOn Americas Generation | ||
Property, plant and equipment, accumulated depreciation | 260 | 244 |
Intangible assets, accumulated amortization | 60 | 40 |
GenOn Mid-Atlantic | ||
Property, plant and equipment, accumulated depreciation | 207 | 200 |
Intangible assets, accumulated amortization | $ 29 | $ 0 |
CONDENSED CONSOLIDATED STATEME7
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions | 6 Months Ended | |
Jun. 30, 2016 | Jun. 30, 2015 | |
Cash Flows from Operating Activities | ||
Net Loss | $ (15) | $ (29) |
Adjustments to reconcile net loss to net cash provided by operating activities: | ||
Depreciation and amortization | 94 | 111 |
Amortization of financing costs and debt discount/premiums | (26) | (29) |
Amortization of out-of-market contracts and emission allowances | (41) | (20) |
Gain on sale of asset | (32) | 0 |
Impairment of Long-Lived Assets Held-for-use | 59 | 0 |
Changes in derivative instruments | 81 | 130 |
Changes in collateral deposits supporting energy risk management activities | 27 | 36 |
Gain (Loss) on Disposition of Intangible Assets | 36 | 0 |
Changes in other working capital | (91) | 75 |
Net Cash Provided by Operating Activities | 38 | 202 |
Cash Flows from Investing Activities: | ||
Capital expenditures | (180) | (99) |
Proceeds from sale of assets | 120 | 0 |
Net Cash Used by Investing Activities | (60) | (99) |
Cash Flows from Financing Activities | ||
Payments for short and long-term debt | (2) | (3) |
Net Cash Used by Financing Activities | (2) | (3) |
Net Increase in Cash and Cash Equivalents | (24) | 100 |
Cash and Cash Equivalents at Beginning of Period | 665 | 920 |
Cash and Cash Equivalents at Beginning of Period | 641 | 1,020 |
GenOn Americas Generation | ||
Cash Flows from Operating Activities | ||
Net Loss | 17 | (13) |
Adjustments to reconcile net loss to net cash provided by operating activities: | ||
Depreciation and amortization | 38 | 37 |
Amortization of Debt Discount (Premium) | (4) | (5) |
Amortization of out-of-market contracts and emission allowances | (14) | 5 |
Gain on sale of asset | (3) | 0 |
Changes in derivative instruments | 144 | 116 |
Changes in collateral deposits supporting energy risk management activities | 34 | 36 |
Changes in other working capital | (84) | 23 |
Net Cash Provided by Operating Activities | 60 | 127 |
Cash Flows from Investing Activities: | ||
Capital expenditures | (27) | (34) |
Proceeds from sale of assets | 2 | 0 |
Net Cash Used by Investing Activities | (25) | (34) |
Cash Flows from Financing Activities | ||
Payments for short and long-term debt | 0 | (3) |
Net Cash Used by Financing Activities | 0 | (3) |
Net Increase in Cash and Cash Equivalents | 35 | 90 |
Cash and Cash Equivalents at Beginning of Period | 246 | 103 |
Cash and Cash Equivalents at Beginning of Period | 281 | 193 |
GenOn Mid-Atlantic | ||
Cash Flows from Operating Activities | ||
Net Loss | 6 | 27 |
Adjustments to reconcile net loss to net cash provided by operating activities: | ||
Depreciation and amortization | 29 | 33 |
Amortization of out-of-market contracts and emission allowances | (14) | (14) |
Changes in derivative instruments | 117 | 62 |
Changes in other working capital | (89) | (27) |
Net Cash Provided by Operating Activities | 49 | 81 |
Cash Flows from Investing Activities: | ||
Capital expenditures | (24) | (18) |
Net Cash Used by Investing Activities | (24) | (18) |
Cash Flows from Financing Activities | ||
Payments for short and long-term debt | 0 | (3) |
Net Cash Used by Financing Activities | (3) | |
Net Increase in Cash and Cash Equivalents | 25 | 60 |
Cash and Cash Equivalents at Beginning of Period | 299 | 157 |
Cash and Cash Equivalents at Beginning of Period | $ 324 | $ 217 |
Basis of Presentation
Basis of Presentation | 6 Months Ended |
Jun. 30, 2016 | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Basis of Presentation (GenOn, GenOn Americas Generation, GenOn Mid-Atlantic) | Basis of Presentation (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) GenOn Energy, Inc., a wholly owned subsidiary of NRG, is a wholesale power generator engaged in the ownership and operation of power generation facilities, with approximately 16,704 MW of net electric generating capacity located in the U.S. During the first six months of 2016, GenOn completed the sales of the Seward and Shelby facilities and deactivated Avon Lake Unit 7 which were the primary drivers resulting in a net decrease in operating generation capacity of 1,049 MW from December 31, 2015. As described in Note 3 , Dispositions , GenOn completed the sale of Aurora generation facility on July 12, 2016 resulting in a further decrease in operating generation capacity of 878 MW. GenOn Americas Generation is a wholesale power generator with approximately 7,907 MW of net electric generating capacity located, in many cases, near major metropolitan areas. GenOn Americas Generation's electric generating capacity is part of the 16,704 MW of net electric generating capacity of GenOn. GenOn Mid-Atlantic operates and owns or leases 4,605 MW of net electric generating capacity in Maryland near Washington, D.C. GenOn Mid-Atlantic’s electric generating capacity is part of the 7,907 MW of net electric generating capacity of GenOn Americas Generation. GenOn Mid-Atlantic’s generating facilities serve the Eastern PJM markets. GenOn Americas Generation and GenOn Mid-Atlantic are Delaware limited liability companies and indirect wholly owned subsidiaries of GenOn. GenOn Mid-Atlantic is an indirect wholly owned subsidiary of GenOn Americas Generation. The Registrants sell power from their generation portfolio, offer capacity or similar products to retail electric providers and others, and provide ancillary services to support system reliability. This is a combined quarterly report of the Registrants for the quarter ended June 30, 2016 . The notes to the condensed consolidated financial statements apply to the Registrants as indicated parenthetically next to each corresponding disclosure. The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with the SEC's regulations for interim financial information and with the instructions to Form 10-Q. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. The following notes should be read in conjunction with the accounting policies and other disclosures as set forth in the notes to the Registrants' financial statements in the Registrants' 2015 Form 10-K. Interim results are not necessarily indicative of results for a full year. In the opinion of management, the accompanying unaudited interim condensed consolidated financial statements contain all material adjustments consisting of normal and recurring accruals necessary to present fairly the Registrants' consolidated financial positions as of June 30, 2016 , and the results of operations, comprehensive income/(loss) and cash flows for the three and six months ended June 30, 2016 , and 2015 . Liquidity and Ability to Continue as a Going Concern The accompanying condensed consolidated financial statements have been prepared assuming GenOn will continue as a going concern, which contemplates continuity of operations, realization of assets and the satisfaction of liabilities in the normal course of business. As such, the accompanying condensed consolidated financial statements do not include any adjustments relating to the recoverability and classification of assets and their carrying amounts, or the amount and classification of liabilities that may result should GenOn be unable to continue as a going concern. Such adjustments could have a material adverse impact on GenOn's results of operations, cash flows and financial position. As disclosed in Note 7 , Debt and Capital Leases , $707 million of GenOn's senior unsecured notes outstanding are current within the GenOn consolidated balance sheet and are due on June 15, 2017. GenOn's future profitability continues to be adversely affected by (i) a sustained decline in natural gas prices and its resulting effect on wholesale power prices and capacity prices, and (ii) the inability of GenOn Mid-Atlantic and REMA to make distributions of cash and certain other restricted payments to GenOn. Based on current projections, GenOn is not expected to have sufficient liquidity to repay the senior unsecured notes due in June 2017. As a result of these factors, there is no assurance GenOn will continue as a going concern. As of June 30, 2016, GenOn has cash and cash equivalents of $641 million , of which $324 million and $149 million is held by GenOn Mid-Atlantic and REMA, respectively. Under their respective operating leases, GenOn Mid-Atlantic and REMA are not permitted to make any distributions and other restricted payments unless: (a) they satisfy the fixed charge coverage ratio for the most recently ended period for four fiscal quarters; (b) they are projected to satisfy the fixed charge coverage ratio for each of the two following periods of four fiscal quarters, commencing with the fiscal quarter in which such payment is proposed to be made; and (c) no significant lease default or event of default has occurred and is continuing. Additionally, REMA must be in compliance with the requirement to provide credit support to the owner lessors securing its obligation to pay scheduled rent under its lease. As a result, GenOn Mid-Atlantic has not been able to make distributions of cash and certain other restricted payments since the quarter ended March 31, 2014 which was the last quarterly period for which GenOn Mid-Atlantic satisfied the conditions under its operating agreement. REMA has not satisfied the conditions under its operating agreement to make distributions of cash and certain other restricted payments since 2009. NRG, GenOn's parent company, has no obligation to provide any financial support other than as described in Note 9 , Related Party Transactions . GenOn is currently considering all options available to it, including negotiations with creditors, refinancing the senior unsecured notes, potential sales of certain generating assets as well as the possibility for a need to file for protection under Chapter 11 of the U.S. Bankruptcy Code. During the second quarter of 2016, GenOn appointed two independent directors as part of this process. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. Reclassifications Certain prior year amounts have been reclassified for comparative purposes. The reclassifications did not affect results from operations, net assets or cash flows. |
Summary of Significant Accounti
Summary of Significant Accounting Policies | 6 Months Ended |
Jun. 30, 2016 | |
Significant Accounting Policies [Abstract] | |
Summary of Significant Accounting Policies (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) | Summary of Significant Accounting Policies (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) Recent Accounting Developments (GenOn, GenOn Americas Generation, and GenOn Mid-Atlantic) ASU 2016-02 — In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), or ASU No. 2016-02. The amendments of ASU No. 2016-02 complete the joint effort between the FASB and the International Accounting Standards Board, or IASB, to develop a common leasing standard for GAAP and International Financial Reporting Standards, or IFRS, with the objective to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and to improve financial reporting. The guidance in ASU No. 2016-02 provides that a lessee that may have previously accounted for a lease as an operating lease under current GAAP should recognize the assets and liabilities that arise from a lease on the balance sheet. In addition, ASU No. 2016-02 expands the required quantitative and qualitative disclosures with regards to lease arrangements. The guidance in ASU No. 2016-02 is effective for fiscal years beginning after December 15, 2018, and interim periods within those annual periods. The adoption of ASU No. 2016-02 is required to be applied using a modified retrospective approach for the earliest period presented and early adoption is permitted. The Registrants are currently evaluating the impact of the standard on the Registrants' results of operations, cash flows and financial position. ASU 2016-01 — In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, or ASU No. 2016-01. The amendments of ASU No. 2016-01 eliminate available-for-sale classification of equity investments and require that equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be generally measured at fair value with changes in fair value recognized in net income. Further, the amendments require that financial assets and financial liabilities to be presented separately in the notes to the financial statements, grouped by measurement category and form of financial asset. The guidance in ASU No. 2016-01 is effective for financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within those annual periods. The Registrants are currently evaluating the impact of the standard on the Registrants' results of operations, cash flows and financial position. ASU 2014-09 — In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), or ASU No. 2014-09. The amendments of ASU No. 2014-09 complete the joint effort between the FASB and the IASB, to develop a common revenue standard for GAAP and IFRS, and to improve financial reporting. The guidance in ASU No. 2014-09 provides that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for the goods or services provided and establishes the following steps to be applied by an entity: (1) identify the contract with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when (or as) the entity satisfies the performance obligation. In August 2015, the FASB issued ASU No. 2015-14, which formally deferred the effective date by one year to make the guidance of ASU No. 2014-09 effective for annual reporting periods beginning after December 15, 2017, including interim periods therein. Early adoption is permitted, but not prior to the original effective date, which was for annual reporting periods beginning after December 15, 2016. In addition to ASU No. 2014-09, the FASB has issued additional guidance which provides further clarification on Topic 606. In March 2016, the FASB issued ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606), or ASU No. 2016-08. The amendments of ASU No. 2016-08 clarify how to apply the implementation guidance on principal versus agent considerations related to the sale of goods or services to a customer as updated by ASU No. 2014-09. In April 2016, the FASB issued ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606), or ASU No. 2016-10. The amendments of ASU No. 2016-10 provide further clarification on contract revenue recognition as updated by ASU No. 2014-09, specifically related to the identification of separately identifiable performance obligations and the implementation of licensing contracts. In May 2016, the FASB issued ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606), or ASU No. 2016-12. The amendments of ASU No. 2016-12 provide further clarification on contract revenue recognition as updated by ASU No. 2014-09, specifically related to collectibility, the presentation of tax collected from customers, and non-cash consideration, as well as offering practical expedients. The Registrants are working through an adoption plan which includes the evaluation of revenue contracts compared to the new standard and evaluating the impact of Topic 606 on the Registrants' results of operations, cash flows and financial position. |
Dispositions (Notes)
Dispositions (Notes) | 6 Months Ended |
Jun. 30, 2016 | |
Business Combinations [Abstract] | |
Mergers, Acquisitions and Dispositions Disclosures [Text Block] | Dispositions (GenOn) Aurora Disposition (GenOn) On May 12, 2016, GenOn entered into an agreement with RA Generation, LLC to sell the Aurora Generating Station, or Aurora, for cash consideration of $365 million , subject to adjustments for working capital and the results of the PJM 2019/2020 Base Residual Auction. Aurora is an 878 MW natural gas facility located in Aurora, Illinois. At June 30, 2016, GenOn had $2 million of current assets, $175 million of non-current assets and $2 million of current liabilities classified as held for sale for Aurora on its balance sheet. On July 12, 2016, GenOn completed the sale of Aurora for cash proceeds of $369 million , including $4 million in adjustments primarily for the PJM base residual auction results and estimated working capital, which is subject to further adjustment. The sale resulted in a gain of approximately $189 million and will be recognized within GenOn's consolidated results of operations during the third quarter of 2016. In connection with the sale, GenOn issued a guaranty to RA Generation, LLC for the payment of certain indemnified costs under the purchase agreement limited to $365 million , which is reduced to $183 million on January 1, 2018 and then to $91 million beginning January 1, 2019 and will terminate upon the third anniversary of the sale. Seward Disposition (GenOn) On November 24, 2015, GenOn entered into an agreement with Seward Generation, LLC and an affiliate of Robindale Energy Services, Inc. to sell 100% of its interest in the Seward Generating Facility, a 525 MW coal-fired facility in Pennsylvania, for cash consideration of $75 million . At December 31, 2015, GenOn had $5 million of current assets, $83 million of non-current assets, $1 million of current liabilities and $4 million of non-current liabilities classified as held for sale for Seward on its balance sheet. On February 2, 2016, GenOn completed the sale of Seward and received gross cash proceeds of $75 million excluding $3 million of cash on hand transferred to the buyer. GenOn will also receive $5 million in deferred cash consideration in five $1 million annual installments and up to $2.5 million in payments contingent upon future environmental testing. In addition, Robindale committed to future inventory purchases from GenOn of $13 million through 2019. Shelby Disposition (GenOn) On November 9, 2015, GenOn entered into an agreement with an affiliate of Rockland Power Partners II, LP and Shelby County Energy Center, LLC to sell 100% of its interest in the Shelby generating facility, a 352 MW natural gas-fired facility located in Illinois for cash consideration of $46 million . At December 31, 2015, GenOn had $1 million of current assets, $22 million of non-current assets, and $1 million of current liabilities classified as held for sale for Shelby on its balance sheet. On March 1, 2016, GenOn completed the sale of Shelby for cash proceeds of $46 million which resulted in a gain of $29 million recognized within GenOn's consolidated results of operations during the first quarter of 2016. In addition, GenOn retained $10 million related to future revenue rights as part of the agreement. |
Fair Value of Financial Instrum
Fair Value of Financial Instruments | 6 Months Ended |
Jun. 30, 2016 | |
Fair Value Disclosures [Abstract] | |
Fair Value of Financial Instruments (GenOn, GenOn Americas Generation, GenOn Mid-Atlantic) | Fair Value of Financial Instruments (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) This footnote should be read in conjunction with the complete description under Note 4 , Fair Value of Financial Instruments , to the Registrants' 2015 Form 10-K. For cash and cash equivalents, funds deposited by counterparties, accounts receivable, accounts payable, accrued liabilities, and cash collateral paid and received in support of energy risk management activities, the carrying amounts approximate fair value because of the short-term maturity of those instruments and are classified as Level 1 within the fair value hierarchy. The estimated carrying amounts and fair values of GenOn and GenOn Americas Generation’s debt are as follows: GenOn As of June 30, 2016 As of December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value (In millions) Long-term debt, including current portion $ 2,735 $ 2,043 $ 2,764 $ 2,043 The fair value of long-term debt that is estimated using reported market prices for instruments that are publicly traded is classified as Level 2 within the fair value hierarchy. The fair value of non-publicly traded debt is based on the income approach valuation technique using current interest rates for similar instruments with equivalent credit quality and is classified as Level 3 within the fair value hierarchy. GenOn Americas Generation As of June 30, 2016 As of December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value (In millions) Long-term debt $ 748 $ 545 $ 752 $ 500 The fair value of long-term debt is estimated using reported market prices for instruments that are publicly traded and is classified as Level 2 within the fair value hierarchy. Recurring Fair Value Measurements Derivative assets and liabilities are carried at fair market value. Realized and unrealized gains and losses included in earnings that are related to energy derivatives are recorded in operating revenues and cost of operations. GenOn The following tables present assets and liabilities (including affiliate amounts) measured and recorded at fair value on GenOn’s consolidated balance sheet on a recurring basis and their level within the fair value hierarchy: As of June 30, 2016 Fair Value Level 1 (a) Level 2 (a) Level 3 Total (In millions) Derivative assets: Commodity contracts $ 106 $ 350 $ 3 $ 459 Derivative liabilities: Commodity contracts $ 49 $ 339 $ 14 $ 402 Other assets (b) $ 11 $ — $ — $ 11 (a) There were no transfers between Levels 1 and 2 during the three and six months ended June 30, 2016 . (b) Relates to mutual funds held in a rabbi trust for non-qualified deferred compensation plans for certain key and highly compensated employees. As of December 31, 2015 Fair Value Level 1 (a) Level 2 (a) Level 3 Total (In millions) Derivative assets: Commodity contracts $ 192 $ 535 $ 2 $ 729 Derivative liabilities: Commodity contracts $ 157 $ 420 $ 14 $ 591 Other assets (b) $ 14 $ — $ — $ 14 (a) There were no transfers between Levels 1 and 2 during the year ended December 31, 2015 . (b) Relates to mutual funds held in a rabbi trust for non-qualified deferred compensation plans for certain key and highly compensated employees. The following table reconciles, for the three and six months ended June 30, 2016 , and 2015 , the beginning and ending balances for derivatives that are recognized at fair value in GenOn's consolidated financial statements at least annually using significant unobservable inputs: Fair Value Measurement Using Significant Unobservable Inputs (Level 3) Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 Derivatives (a) Derivatives (a) (In millions) Beginning balance $ (14 ) $ 16 $ (12 ) $ 33 Total gains/(losses) included in earnings — realized/unrealized 1 (13 ) (1 ) (26 ) Purchases 2 11 2 7 Ending balance $ (11 ) $ 14 $ (11 ) $ 14 (Losses)/gains for the period included in earnings attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of June 30 $ (2 ) $ 1 $ (8 ) $ (6 ) (a) Consists of derivative assets and liabilities, net. GenOn Americas Generation The following tables present assets and liabilities (including affiliate amounts) measured and recorded at fair value on GenOn Americas Generation's consolidated balance sheet on a recurring basis and their level within the fair value hierarchy: As of June 30, 2016 Fair Value Level 1 (a) Level 2 (a) Level 3 Total (In millions) Derivative assets: Commodity contracts $ 130 $ 543 $ 18 $ 691 Derivative liabilities: Commodity contracts $ 70 $ 571 $ 17 $ 658 (a) There were no transfers between Levels 1 and 2 during the three and six months ended June 30, 2016 . As of December 31, 2015 Fair Value Level 1 (a) Level 2 (a) Level 3 Total (In millions) Derivative assets: Commodity contracts $ 285 $ 796 $ 15 $ 1,096 Derivative liabilities: Commodity contracts $ 170 $ 735 $ 14 $ 919 (a) There were no transfers between Levels 1 and 2 during the year ended December 31, 2015 . The following table reconciles, for the three and six months ended June 30, 2016 , and 2015 , the beginning and ending balances for GenOn Americas Generation's derivatives that are recognized at fair value in the consolidated financial statements at least annually using significant unobservable inputs: Fair Value Measurement Using Significant Unobservable Inputs (Level 3) Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 Derivatives (a) Derivatives (a) (In millions) Beginning balance $ 2 $ 16 $ 1 $ 20 Total losses included in earnings — realized/unrealized (2 ) (9 ) (1 ) (10 ) Purchases 1 5 1 2 Ending balance $ 1 $ 12 $ 1 $ 12 Gains for the period included in earnings attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of June 30 $ — $ 3 $ — $ 2 (a) Consists of derivative assets and liabilities, net. GenOn Mid-Atlantic The following tables present assets and liabilities (including affiliate amounts) measured and recorded at fair value on GenOn Mid-Atlantic's consolidated balance sheet on a recurring basis and their level within the fair value hierarchy: As of June 30, 2016 Fair Value Level 1 (a) Level 2 (a) Level 3 Total (In millions) Derivative assets: Commodity contracts $ 80 $ 109 $ 1 $ 190 Derivative liabilities: Commodity contracts $ 24 $ 126 $ — $ 150 (a) There were no transfers between Levels 1 and 2 during the three and six months ended June 30, 2016 . As of December 31, 2015 Fair Value Level 1 (a) Level 2 (a) Level 3 Total (In millions) Derivative assets: Commodity contracts $ 175 $ 175 $ 2 $ 352 Derivative liabilities: Commodity contracts $ 58 $ 137 $ — $ 195 (a) There were no transfers between Levels 1 and 2 during the year ended December 31, 2015 . The following table reconciles, for the three and six months ended June 30, 2016 , and 2015 , the beginning and ending balances for GenOn Mid-Atlantic's derivatives that are recognized at fair value in the consolidated financial statements at least annually using significant unobservable inputs: Fair Value Measurement Using Significant Unobservable Inputs (Level 3) Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 Derivatives (a) Derivatives (a) (In millions) Beginning balance $ 2 $ 16 $ 2 $ 20 Total losses included in earnings — realized/unrealized (1 ) (9 ) (1 ) (10 ) Purchases — 6 — 3 Ending balance $ 1 $ 13 $ 1 $ 13 Gains for the period included in earnings attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of June 30 $ — $ 3 $ — $ 2 (a) Consists of derivative assets and liabilities, net. Derivative Fair Value Measurements A portion of the Registrants' contracts are exchange-traded contracts with readily available quoted market prices. A majority of the Registrants' contracts are non-exchange-traded contracts valued using prices provided by external sources, primarily price quotations available through brokers or over-the-counter and on-line exchanges. The remainder of the assets and liabilities represent contracts for which external sources or observable market quotes are not available for the whole term or for certain delivery months. These contracts are valued using various valuation techniques including but not limited to internal models that apply fundamental analysis of the market and corroboration with similar markets. As of June 30, 2016 , contracts valued with prices provided by models and other valuation techniques make up less than 1% of GenOn's derivative assets and 3% of GenOn's derivative liabilities, 3% of GenOn Americas Generation’s derivative assets and 3% of GenOn Americas Generation's derivative liabilities and less than 1% of GenOn Mid-Atlantic’s derivative assets and 0% of GenOn Mid-Atlantic's derivative liabilities. The Registrants' significant positions classified as Level 3 include financial power and physical coal executed in illiquid markets as well as financial transmission rights, or FTRs. The significant unobservable inputs used in developing fair value include illiquid power and coal location pricing, which is derived as a basis to liquid locations. The basis spread is based on observable market data when available or derived from historic prices and forward market prices from similar observable markets when not available. For FTRs, the Registrants use the most recent auction prices to derive the fair value. The following tables quantify the significant unobservable inputs used in developing the fair value of the Registrants' Level 3 positions as of June 30, 2016 and December 31, 2015 : GenOn Significant Unobservable Inputs June 30, 2016 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) Coal Contracts — 13 Discounted Cash Flow Forward Market Price (per ton) 28 38 33 FTRs 3 1 Discounted Cash Flow Auction Prices (per MWh) (2 ) 3 — $ 3 $ 14 Significant Unobservable Inputs December 31, 2015 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) Power Contracts $ 1 $ — Discounted Cash Flow Forward Market Price (per MWh) $ 22 $ 67 $ 42 Coal Contracts — 12 Discounted Cash Flow Forward Market Price (per ton) 28 45 35 FTRs 1 2 Discounted Cash Flow Auction Prices (per MWh) — 3 1 $ 2 $ 14 GenOn Americas Generation Significant Unobservable Inputs June 30, 2016 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) Power Contracts $ 1 $ — Discounted Cash Flow Forward Market Price (per MWh) $ 26 $ 71 $ 43 Coal Contracts 13 14 Discounted Cash Flow Forward Market Price (per ton) 28 38 33 FTRs 4 3 Discounted Cash Flow Auction Prices (per MWh) (2 ) 3 — $ 18 $ 17 Significant Unobservable Inputs December 31, 2015 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) Power Contracts $ 1 $ — Discounted Cash Flow Forward Market Price (per MWh) $ 22 $ 67 $ 42 Coal Contracts 12 12 Discounted Cash Flow Forward Market Price (per ton) 28 45 35 FTRs 2 2 Discounted Cash Flow Auction Prices (per MWh) — 3 1 $ 15 $ 14 GenOn Mid-Atlantic Significant Unobservable Inputs June 30, 2016 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) FTRs $ 1 $ — Discounted Cash Flow Auction Prices (per MWh) $ — $ 1 $ — $ 1 $ — Significant Unobservable Inputs December 31, 2015 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) Power Contracts $ 2 $ — Discounted Cash Flow Forward Market Price (per MWh) $ 22 $ 67 $ 42 $ 2 $ — The following table provides sensitivity of fair value measurements to increases/(decreases) in significant unobservable inputs as of June 30, 2016 , and December 31, 2015 : Significant Unobservable Input Position Change In Input Impact on Fair Value Measurement Forward Market Price Power/Coal Buy Increase/(Decrease) Higher/(Lower) Forward Market Price Power/Coal Sell Increase/(Decrease) Lower/(Higher) FTR Prices Buy Increase/(Decrease) Higher/(Lower) FTR Prices Sell Increase/(Decrease) Lower/(Higher) The fair value of each contract is discounted using a risk free interest rate. In addition, the Registrants apply a non-performance/credit reserve to reflect credit risk which is calculated based on published default probabilities. To the extent that the Registrants' net exposure under a specific master agreement is an asset, the Registrants use the counterparty's default swap rate. The credit reserve is added to the discounted fair value to reflect the exit price that a market participant would be willing to receive to assume the Registrants' liabilities or that a market participant would be willing to pay for the Registrants' assets. The Registrants' (non-performance)/credit reserves were as follows: As of June 30, 2016 As of December 31, 2015 (In millions) GenOn $ (1 ) $ (1 ) GenOn Americas Generation (1 ) — GenOn Mid-Atlantic 1 4 Concentration of Credit Risk In addition to the credit risk discussion as disclosed in Note 2 , Summary of Significant Accounting Policies , to the Registrants' 2015 Form 10-K, the following is a discussion of the concentration of credit risk for the Registrants’ financial instruments. Credit risk relates to the risk of loss resulting from non-performance or non-payment by counterparties pursuant to the terms of their contractual obligations. The Registrants are exposed to counterparty credit risk through various activities including wholesale sales and fuel purchases. Counterparty Credit Risk The Registrants' counterparty credit risk policies are disclosed in their 2015 Form 10-K. As of June 30, 2016 , GenOn's counterparty credit exposure was $241 million and GenOn held $0 million of collateral (cash and letters of credit) against those positions, resulting in a net exposure of $241 million . Approximately 75% of GenOn's exposure before collateral is expected to roll off by the end of 2017 . As of June 30, 2016 , GenOn Americas Generation’s counterparty credit exposure was $205 million and GenOn Americas Generation held $0 million of collateral (cash and letters of credit) against those positions, resulting in a net exposure of $205 million . Approximately 89% of GenOn Americas Generation’s exposure before collateral is expected to roll off by the end of 2017 . As of June 30, 2016 , GenOn Mid-Atlantic had no counterparty credit exposure. The following tables highlight net counterparty credit exposure by industry sector and by counterparty credit quality. Net counterparty credit exposure is defined as the aggregate net asset position for the Registrants with counterparties where netting is permitted under the enabling agreement and includes all cash flow, mark-to-market, NPNS and non-derivative transactions. The exposure is shown net of collateral held and includes amounts net of receivables or payables. Net Exposure (a) (% of Total) Category GenOn GenOn Americas Generation GenOn Mid-Atlantic Financial institutions 49 % 57 % — % Utilities, energy merchants, marketers and other 29 17 — ISOs 22 26 — Total as of June 30, 2016 100 % 100 % — % Net Exposure (a) (% of Total) Category GenOn GenOn Americas Generation GenOn Mid-Atlantic Investment grade 97 % 99 % — % Below investment grade 1 1 — Non-rated (b) 2 — — Total as of June 30, 2016 100 % 100 % — % (a) Counterparty credit exposure excludes uranium and coal transportation contracts because of the unavailability of market prices. (b) For non-rated counterparties, a significant portion are related to ISO and municipal public power entities, which are considered investment grade equivalent ratings based on NRG's internal credit ratings. The Registrants have counterparty credit risk exposure to certain counterparties, each of which represent more than 10% of their respective total net exposure discussed above. The aggregate of such counterparties' exposure was $192 million , $192 million and $0 million for GenOn, GenOn Americas Generation and GenOn Mid-Atlantic, respectively. Changes in hedge positions and market prices will affect credit exposure and counterparty concentration. Given the credit quality, diversification and term of the exposure in the portfolio, the Registrants do not anticipate a material impact on their financial position or results of operations from nonperformance by any of their counterparties. |
Accounting for Derivative Instr
Accounting for Derivative Instruments and Hedging Activities | 6 Months Ended |
Jun. 30, 2016 | |
Derivative Instruments and Hedging Activities Disclosure [Abstract] | |
Accounting for Derivative Instruments and Hedging Activities (GenOn, GenOn Americas Generation, GenOn Mid-Atlantic) | Accounting for Derivative Instruments and Hedging Activities (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) This footnote should be read in conjunction with the complete description under Note 5 , Accounting for Derivative Instruments and Hedging Activities , to the Registrants' 2015 Form 10-K. Energy-Related Commodities (GenOn) As of June 30, 2016 , GenOn had energy-related derivative financial instruments extending through 2019. Volumetric Underlying Derivative Transactions (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) The following table summarizes the net notional volume buy/(sell) of the Registrants’ open derivative transactions broken out by commodity, excluding those derivatives that qualified for the NPNS exception as of June 30, 2016 , and December 31, 2015 . Option contracts are reflected using delta volume. Delta volume equals the notional volume of an option adjusted for the probability that the option will be in-the-money at its expiration date. GenOn GenOn Americas Generation GenOn Mid-Atlantic Total Volume Total Volume Total Volume As of June 30, 2016 As of December 31, 2015 As of June 30, 2016 As of December 31, 2015 As of June 30, 2016 As of December 31, 2015 Commodity Units (In millions) Emissions Short Ton 1 — 1 — 1 — Coal Short Ton 5 7 3 3 3 3 Natural Gas MMBtu 175 191 20 2 11 (10) Power MWh (40 ) (49) (15 ) (20) (14 ) (18) The change in the natural gas position was the result of buying natural gas to convert fixed price natural gas hedges into fixed price power hedges, as well as the settlement of positions during the period. Fair Value of Derivative Instruments (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) The following tables summarize the fair value within the derivative instrument valuation on the balance sheet: GenOn Fair Value Derivative Assets Derivative Liabilities June 30, 2016 December 31, 2015 June 30, 2016 December 31, 2015 (In millions) Derivatives Not Designated as Cash Flow Hedges: Commodity contracts current $ 320 $ 574 $ 309 $ 475 Commodity contracts long-term 139 155 93 116 Total Derivatives Not Designated as Cash Flow Hedges $ 459 $ 729 $ 402 $ 591 GenOn Americas Generation Fair Value Derivative Assets Derivative Liabilities June 30, 2016 December 31, 2015 June 30, 2016 December 31, 2015 (In millions) Derivatives Not Designated as Cash Flow Hedges : Commodity contracts current $ 496 $ 861 $ 477 $ 737 Commodity contracts long-term 195 235 181 182 Total Derivatives Not Designated as Cash Flow Hedges $ 691 $ 1,096 $ 658 $ 919 GenOn Mid-Atlantic Fair Value Derivative Assets Derivative Liabilities June 30, 2016 December 31, 2015 June 30, 2016 December 31, 2015 (In millions) Derivatives Not Designated as Cash Flow Hedges : Commodity contracts current $ 141 $ 269 $ 116 $ 163 Commodity contracts long-term 49 83 34 32 Total Derivatives Not Designated as Cash Flow Hedges $ 190 $ 352 $ 150 $ 195 The Registrants have elected to present derivative assets and liabilities on the balance sheet on a trade-by-trade basis and do not offset amounts at the counterparty master agreement level. In addition, collateral received or paid on the Registrants' derivative assets or liabilities are recorded on a separate line item on the balance sheet. The following tables summarize the offsetting of derivatives by counterparty master agreement level and collateral received or paid: GenOn Gross Amounts Not Offset in the Statement of Financial Position Description Gross Amounts of Recognized Assets / Liabilities Derivative Instruments Cash Collateral (Held) / Posted Net Amount June 30, 2016 (In millions) Commodity contracts: Derivative assets $ 449 $ (293 ) $ (53 ) $ 103 Derivative assets - affiliate 10 (10 ) — — Derivative liabilities (389 ) 293 8 (88 ) Derivative liabilities - affiliate (13 ) 10 3 — Total derivative instruments $ 57 $ — $ (42 ) $ 15 Gross Amounts Not Offset in the Statement of Financial Position Description Gross Amounts of Recognized Assets / Liabilities Derivative Instruments Cash Collateral (Held) / Posted Net Amount December 31, 2015 (In millions) Commodity contracts: Derivative assets $ 698 $ (485 ) $ (51 ) $ 162 Derivative assets - affiliate 31 (24 ) — 7 Derivative liabilities (567 ) 485 — (82 ) Derivative liabilities - affiliate (24 ) 24 — — Total derivative instruments $ 138 $ — $ (51 ) $ 87 GenOn Americas Generation Gross Amounts Not Offset in the Statement of Financial Position Description Gross Amounts of Recognized Assets / Liabilities Derivative Instruments Cash Collateral (Held) / Posted Net Amount June 30, 2016 (In millions) Commodity contracts: Derivative assets $ 449 $ (293 ) $ (53 ) $ 103 Derivative assets - affiliate 242 (229 ) — 13 Derivative liabilities (389 ) 293 8 (88 ) Derivative liabilities - affiliate (269 ) 229 4 (36 ) Total derivative instruments $ 33 $ — $ (41 ) $ (8 ) Gross Amounts Not Offset in the Statement of Financial Position Description Gross Amounts of Recognized Assets / Liabilities Derivative Instruments Cash Collateral (Held) / Posted Net Amount December 31, 2015 (In millions) Commodity contracts: Derivative assets $ 699 $ (485 ) $ (51 ) $ 163 Derivative assets - affiliate 397 (352 ) — 45 Derivative liabilities (567 ) 485 — (82 ) Derivative liabilities - affiliate (352 ) 352 — — Total derivative instruments $ 177 $ — $ (51 ) $ 126 GenOn Mid-Atlantic Gross Amounts Not Offset in the Statement of Financial Position Description Gross Amounts of Recognized Assets / Liabilities Derivative Instruments Cash Collateral (Held) / Posted Net Amount June 30, 2016 (In millions) Commodity contracts: Derivative assets - affiliate $ 190 $ (150 ) $ — $ 40 Derivative liabilities - affiliate (150 ) 150 — — Total derivative instruments $ 40 $ — $ — $ 40 Gross Amounts Not Offset in the Statement of Financial Position Description Gross Amounts of Recognized Assets / Liabilities Derivative Instruments Cash Collateral (Held) / Posted Net Amount December 31, 2015 (In millions) Commodity contracts: Derivative assets - affiliate $ 352 $ (195 ) $ — $ 157 Derivative liabilities - affiliate (195 ) 195 — — Total derivative instruments $ 157 $ — $ — $ 157 Impact of Derivative Instruments on the Statements of Operations (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) Unrealized gains and losses associated with changes in the fair value of derivative instruments are reflected in current period earnings. During 2016, the Registrants' have been undergoing the process of closing out and financially settling certain open positions with counterparties. The closure and financial settlements with these counterparties were necessary to manage the increases in collateral posting requirements following rating agency downgrades, as further described in Note 7 , Debt and Capital Leases , and reduce expected collateral costs associated with exchange cleared hedge transactions. The following tables summarize the pre-tax effects of economic hedges. These amounts are included within operating revenues and cost of operations. GenOn Three months ended June 30, Six months ended June 30, (In millions) 2016 2015 2016 2015 Unrealized mark-to-market results Reversal of previously recognized unrealized gains on settled positions related to economic hedges $ (46 ) $ (41 ) $ (116 ) $ (127 ) Net unrealized (losses)/gains on open positions related to economic hedges (19 ) 56 25 (6 ) Total unrealized (losses)/gains $ (65 ) $ 15 $ (91 ) $ (133 ) Three months ended June 30, Six months ended June 30, (In millions) 2016 2015 2016 2015 Revenue from operations — energy commodities $ (64 ) $ 25 $ (91 ) $ (74 ) Cost of operations (1 ) (10 ) — (59 ) Total impact to statements of operations $ (65 ) $ 15 $ (91 ) $ (133 ) As discussed above, GenOn realized approximately $38 million due to the closure and financial settlement of all open positions with one of GenOn's counterparties during the three months ended June 30, 2016. GenOn expects to close out and financially settle certain open positions with an additional counterparty during the third quarter of 2016. These positions had a fair market value of $80 million as of June 30, 2016. As of July 31, 2016, GenOn has realized $98 million due to the closure and financial settlement of these positions which would have otherwise been realized in 2017 through 2019. GenOn Americas Generation Three months ended June 30, Six months ended June 30, (In millions) 2016 2015 2016 2015 Unrealized mark-to-market results Reversal of previously recognized unrealized gains on settled positions related to economic hedges $ (52 ) $ (35 ) $ (119 ) $ (130 ) Net unrealized (losses)/gains on open positions related to economic hedges (42 ) 33 (29 ) 11 Total unrealized losses $ (94 ) $ (2 ) $ (148 ) $ (119 ) Three months ended June 30, Six months ended June 30, (In millions) 2016 2015 2016 2015 Revenue from operations — energy commodities $ (97 ) $ 6 $ (153 ) $ (80 ) Cost of operations 3 (8 ) 5 (39 ) Total impact to statements of operations $ (94 ) $ (2 ) $ (148 ) $ (119 ) As discussed above, GenOn Americas Generation realized approximately $35 million due to the closure and financial settlement of all open positions with one of GenOn Americas Generation's counterparties during the three months ended June 30, 2016. GenOn Americas Generation expects to close out and financially settle certain open positions with an additional counterparty during the third quarter of 2016. These positions had a fair market value of $40 million as of June 30, 2016. As of July 31, 2016, GenOn Americas Generation has realized $50 million due to the closure and financial settlement of these positions which would have otherwise been realized in 2017 through 2019. GenOn Mid-Atlantic Three months ended June 30, Six months ended June 30, (In millions) 2016 2015 2016 2015 Unrealized mark-to-market results Reversal of previously recognized unrealized gains on settled positions related to economic hedges $ (47 ) $ (32 ) $ (99 ) $ (59 ) Net unrealized (losses)/gains on open positions related to economic hedges (34 ) 19 (22 ) (9 ) Total unrealized losses $ (81 ) $ (13 ) $ (121 ) $ (68 ) Three months ended June 30, Six months ended June 30, (In millions) 2016 2015 2016 2015 Revenue from operations — energy commodities $ (84 ) $ (4 ) $ (120 ) $ (28 ) Cost of operations 3 (9 ) (1 ) (40 ) Total impact to statements of operations $ (81 ) $ (13 ) $ (121 ) $ (68 ) As discussed above, GenOn Mid-Atlantic realized approximately $35 million due to the closure and financial settlement of all open positions with one of GenOn Mid-Atlantic's counterparties during the three months ended June 30, 2016. GenOn Mid-Atlantic expects to close out and financially settle certain open positions with an additional counterparty during the third quarter of 2016. These positions had a fair market value of $40 million as of June 30, 2016. As of July 31, 2016, GenOn Mid-Atlantic has realized $50 million due to the closure and financial settlement of these positions which would have otherwise been realized in 2017 through 2019. Credit Risk Related Contingent Features (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) Certain of GenOn and GenOn Americas Generation’s hedging agreements contain provisions that require the Registrants to post additional collateral if the counterparty determines that there has been deterioration in credit quality, generally termed "adequate assurance" under the agreements, or require the Registrants to post additional collateral if there were a one notch downgrade in the Registrants’ credit rating. The collateral required for contracts that have adequate assurance clauses that are in net liability positions as of June 30, 2016 , was $25 million for GenOn and GenOn Americas Generation. As of June 30, 2016 , no collateral was required for contracts with credit rating contingent features that are in a net liability position for GenOn and GenOn Americas Generation. GenOn and GenOn Americas Generation are also party to certain marginable agreements under which no collateral was due as of June 30, 2016 . As of June 30, 2016 , GenOn Mid-Atlantic did not have any financial instruments with credit-risk-related contingent features. See Note 4 , Fair Value of Financial Instruments , for discussion regarding concentration of credit risk. |
Impairments (Notes)
Impairments (Notes) | 6 Months Ended |
Jun. 30, 2016 | |
Income Statement [Abstract] | |
Asset Impairment Charges [Text Block] | Impairments (GenOn) Long-Lived Asset Impairments (GenOn) Mandalay and Ormond Beach (GenOn) — On May 26 , 2016, the CPUC rejected a multi-year resource adequacy contract between Mandalay and Southern California Edison. Also occurring during the second quarter of 2016, the Statewide Advisory Committee on Cooling Water Intake Structures, or SACCWIS, issued a draft April 2016 Report noting that CAISO plans to continue to assume in its transmission studies that Ormond Beach will not operate after December 31, 2020, the deadline for Ormond Beach compliance with California regulations to mitigate once-through cooling (OTC) impacts. The Registrant does not anticipate that contracts of sufficient value can be secured to support the significant investment required to design, permit, construct and operate measures required for OTC compliance. As a result, on May 6, 2016, the Registrant notified SACCWIS that it does not expect to continue to operate Ormond Beach beyond 2020. Additionally, during the second quarter of 2016, CAISO issued its Local Capacity Requirements report for 2017 indicating unfavorable changes within the local reliability areas in which both Mandalay and Ormond Beach are located. The culmination of these events were considered to be indicators of impairment and as a result, GenOn performed impairment tests for the Mandalay and Ormond Beach assets under ASC 360, Property, Plant and Equipment . Based on the results of the impairment tests, GenOn determined that the carrying amount of these assets was higher than the estimated future net cash flows expected to be generated by the respective assets and that the Mandalay and Ormond Beach assets were impaired. The fair value of the Mandalay and Ormond Beach operating units was determined using the income approach which utilizes estimates of discounted future cash flows, which were Level 3 fair value measurements and include key inputs such as forecasted contract prices, forecasted operating expenses and discount rates. GenOn measured the impairment losses as the difference between the carrying amount of the Mandalay and Ormond Beach operating units and the present value of the estimated future net cash flows for each respective operating unit. GenOn recorded an impairment loss of $16 million and $43 million for Mandalay and Ormond Beach, respectively, during the quarter ended June 30, 2016. |
Debt and Capital Leases (Notes)
Debt and Capital Leases (Notes) | 6 Months Ended |
Jun. 30, 2016 | |
Debt Disclosure [Abstract] | |
Debt and Capital Leases Disclosures [Text Block] | Debt and Capital Leases (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) Long-term debt and capital leases consisted of the following: (In millions, except rates) June 30, 2016 December 31, 2015 June 30, 2016 interest rate % GenOn Americas Generation: Senior unsecured notes, due 2021 $ 395 $ 398 8.500 Senior unsecured notes, due 2031 353 354 9.125 Subtotal GenOn Americas Generation 748 752 GenOn Energy: Senior unsecured notes, due 2017 707 714 7.875 Senior unsecured notes, due 2018 698 708 9.500 Senior unsecured notes, due 2020 529 534 9.875 Other liability (a) 53 56 GenOn capital lease 2 2 Subtotal GenOn Energy 1,989 2,014 Subtotal 2,737 2,766 Less current maturities 711 4 Total long-term debt and capital leases $ 2,026 $ 2,762 (a) The Long Term Service Agreement for the Hunterstown facility is accounted for as a debt financing liability in accordance with GAAP. Long-term debt includes the following premiums: (In millions) June 30, 2016 December 31, 2015 GenOn Americas Generation: Senior unsecured notes, due 2021 $ 29 $ 32 Senior unsecured notes, due 2031 24 25 GenOn Energy: Senior unsecured notes, due 2017 16 23 Senior unsecured notes, due 2018 48 59 Senior unsecured notes, due 2020 40 44 Total premium $ 157 $ 183 On May 24, 2016, GenOn's corporate credit rating was lowered by S&P to CCC from CCC+. S&P also lowered the issue-level ratings on the GenOn senior notes from B- to CCC+ and the GenOn Americas Generation senior notes from CCC+ to CCC. In addition, on March 21, 2016, GenOn's corporate credit rating was lowered by Moody's from B3 to Caa2. In addition, Moody's also lowered the issue-level ratings on the GenOn senior notes from B3 to Caa2 and the GenOn Americas Generation senior notes from Caa1 to Caa2. |
Income Taxes
Income Taxes | 6 Months Ended |
Jun. 30, 2016 | |
Income Tax Disclosure [Abstract] | |
Income Taxes (GenOn, GenOn Americas Generation, GenOn Mid-Atlantic) | Income Taxes (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) GenOn GenOn’s income tax expense consisted of the following: Three months ended June 30, Six months ended June 30, (In millions except otherwise noted) 2016 2015 2016 2015 Loss before income taxes $ (116 ) $ (18 ) $ (16 ) $ (30 ) Income tax benefit — — (1 ) (1 ) Effective tax rate — % — % 6.3 % 3.3 % For the three months ended June 30, 2016 and 2015, respectively, GenOn's overall effective tax rate was lower than the statutory rate of 35% primarily due to a change in the valuation allowance. For the six months ended June 30, 2016 and 2015 , respectively, GenOn's overall effective tax rate was lower than the statutory rate of 35% due to a change in the valuation allowance, partially offset by the impact of state income taxes. GenOn Americas Generation GenOn Americas Generation's allocated income taxes resulting from its operations for the three and six months ended June 30, 2016 and 2015 were $0 . GenOn Americas Generation's pro forma income taxes resulting from its operations for the three and six months ended June 30, 2016 and 2015 are $0 due to the valuation allowance recorded on its stand-alone financial results. GenOn Mid-Atlantic GenOn Mid-Atlantic’s allocated income taxes resulting from its operations are $0 for the three and six months ended June 30, 2016 and 2015 . The pro forma income tax provision attributable to income before taxes is a tax benefit of $16 million and a tax expense of $2 million during the three months ended June 30, 2016 and 2015 , respectively. The pro forma income tax provision attributable to income before taxes is a tax expense of $2 million and $10 million during the six months ended June 30, 2016 and 2015 , respectively. The balance of GenOn Mid-Atlantic's pro forma deferred income taxes is a net deferred tax asset of $54 million and $56 million as of June 30, 2016 and December 31, 2015 , respectively, as no valuation allowance is required on the net deferred tax asset. |
Related Party Transactions
Related Party Transactions | 6 Months Ended |
Jun. 30, 2016 | |
Related Party Transactions [Abstract] | |
Related Party Transactions (GenOn, GenOn Americas Generaiton, GenOn Mid-Atlantic) | Related Party Transactions (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) Services Agreement with NRG NRG provides GenOn with various management, personnel and other services, which include human resources, regulatory and public affairs, accounting, tax, legal, information systems, treasury, risk management, commercial operations, and asset management, as set forth in its services agreement with NRG, or the Services Agreement. The initial term of the Services Agreement was through December 31, 2013, with an automatic renewal absent a request for termination. The fee charged is determined based on a fixed amount as described in the Services Agreement and was calculated based on historical GenOn expenses prior to the NRG Merger. The annual fees under the Services Agreement are approximately $193 million . NRG charges these fees on a monthly basis, less amounts incurred directly by GenOn. Management has concluded that this method of charging overhead costs is reasonable. For the three and six months ended June 30, 2016 , GenOn recorded costs related to these services of $47 million and $93 million , respectively, as general and administrative — affiliate. For the three and six months ended June 30, 2015, GenOn recorded costs related to these services of $48 million and $97 million , respectively, as general and administrative — affiliate. Under the Services Agreement, NRG also provides GenOn Americas Generation and GenOn Mid-Atlantic with various management, personnel and other services consistent with those set forth in the Services Agreement discussed above between NRG and GenOn. GenOn's costs incurred under the Services Agreement with NRG are allocated to its subsidiaries based on each operating subsidiary's planned operating expenses relative to all operating subsidiaries of GenOn. These allocations and charges are not necessarily indicative of what would have been incurred had GenOn Americas Generation and GenOn Mid-Atlantic been unaffiliated entities. Management has concluded that this method of charging overhead costs is reasonable. The following costs were incurred under these arrangements: GenOn Americas Generation Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 (In millions) Allocated costs: Cost of operations — affiliate $ 1 $ 2 $ 2 $ 2 General and administrative — affiliate 20 20 41 41 Total $ 21 $ 22 $ 43 $ 43 GenOn Mid-Atlantic Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 (In millions) Allocated costs: Cost of operations — affiliate $ 1 $ 1 $ 2 $ 1 General and administrative — affiliate 15 14 30 29 Total $ 16 $ 15 $ 32 $ 30 Credit Agreement with NRG (GenOn) GenOn and NRG Americas are party to a secured intercompany revolving credit agreement with NRG. This credit agreement provides for a $500 million revolving credit facility, all of which is available for revolving loans and letters of credit. At June 30, 2016 , and December 31, 2015 , $281 million and $278 million , respectively, of letters of credit were issued and outstanding under the NRG credit agreement for GenOn. Of this amount, $204 million and $227 million , respectively, were issued on behalf of GenOn Americas Generation, which includes $129 million and $131 million issued on behalf of GenOn Mid-Atlantic as of June 30, 2016 , and December 31, 2015 , respectively. At June 30, 2016 , and December 31, 2015 , no loans were outstanding under this credit agreement. Certain of GenOn's subsidiaries, as guarantors, entered into a guarantee agreement pursuant to which these guarantors guaranteed amounts borrowed and obligations incurred under the credit agreement. The guarantors are restricted from incurring additional liens on certain of their assets. The credit agreement is payable at maturity, subject to certain exceptions primarily related to asset sales not in the ordinary course of business and borrowings of debt and matures in December of 2018. At GenOn's election, the interest rate per year applicable to the loans under the credit agreement will be determined by reference to either (i) the base rate plus 2.50% per year or (ii) the LIBOR rate plus 3.50% per year. In addition, the credit agreement contains customary covenants and events of default. As of June 30, 2016, GenOn was in compliance with covenants under the credit agreement with NRG. In the second quarter of 2016, in connection with the ratings downgrades described in Note 7 , Debt and Capital Leases , certain of GenOn's counterparties required the posting of additional collateral, which resulted in additional letters of credit to be issued under the credit agreement with NRG. Intercompany Cash Management Program (GenOn Americas Generation) GenOn Americas Generation and certain of its subsidiaries participate in separate intercompany cash management programs whereby cash balances at GenOn Americas Generation and the respective participating subsidiaries are transferred to central concentration accounts to fund working capital and other needs of the respective participants. The balances under this program are reflected as notes receivable — affiliate and accounts receivable — affiliate or notes payable — affiliate and accounts payable — affiliate, as appropriate. The balances are due on demand and notes receivable — affiliate and notes payable — affiliate accrue interest on the net position, which is payable quarterly, at a rate determined by GenOn Energy Holdings, a wholly owned subsidiary of GenOn. At June 30, 2016 , and December 31, 2015 , GenOn Americas Generation had a net current note receivable — affiliate from GenOn Energy Holdings of $331 million related to its intercompany cash management program. For the six months ended June 30, 2016 , and 2015 , GenOn Americas Generation earned an insignificant amount of net interest income related to these notes. Additionally, at June 30, 2016 , and December 31, 2015 , GenOn Americas Generation had an accounts payable — affiliate of $30 million and $41 million , respectively, with GenOn Energy Holdings. |
Commitments and Contingencies
Commitments and Contingencies | 6 Months Ended |
Jun. 30, 2016 | |
Commitments and Contingencies Disclosure [Abstract] | |
Commitments and Contingencies (GenOn, GenOn Americas Generation, GenOn Mid-Atlantic) | Commitments and Contingencies (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) This footnote should be read in conjunction with the complete description under Note 15 , Commitment and Contingencies , to the Registrants' 2015 Form 10-K. Contingencies The Registrants’ material legal proceedings are described below. The Registrants believe that they have valid defenses to these legal proceedings and intend to defend them vigorously. The Registrants record reserves for estimated losses from contingencies when information available indicates that a loss is probable and the amount of the loss, or range of loss, can be reasonably estimated. As applicable, the Registrants' have established an adequate reserve for the matters discussed below. In addition, legal costs are expensed as incurred. Management has assessed each of the following matters based on current information and made a judgment concerning its potential outcome, considering the nature of the claim, the amount and nature of damages sought, and the probability of success. Unless specified below, the Registrants are unable to predict the outcome of these legal proceedings or reasonably estimate the scope or amount of any associated costs and potential liabilities. As additional information becomes available, management adjusts its assessment and estimates of such contingencies accordingly. Because litigation is subject to inherent uncertainties and unfavorable rulings or developments, it is possible that the ultimate resolution of the Registrants’ liabilities and contingencies could be at amounts that are different from their currently recorded reserves and that such difference could be material. In addition to the legal proceedings noted below, the Registrants are parties to other litigation or legal proceedings arising in the ordinary course of business. In management's opinion, the disposition of these ordinary course matters will not materially adversely affect the Registrants’ respective consolidated financial position, results of operations, or cash flows. Actions Pursued by MC Asset Recovery (GenOn) — With Mirant Corporation's emergence from bankruptcy protection in 2006, certain actions filed by GenOn Energy Holdings and some of its subsidiaries against third parties were transferred to MC Asset Recovery, a wholly owned subsidiary of GenOn Energy Holdings. MC Asset Recovery is governed by a manager who is independent of NRG and GenOn. MC Asset Recovery is a disregarded entity for income tax purposes. Under the remaining action transferred to MC Asset Recovery, MC Asset Recovery seeks to recover damages from Commerzbank AG and various other banks, or the Commerzbank Defendants, for alleged fraudulent transfers that occurred prior to Mirant's bankruptcy proceedings. In December 2010, the U.S. District Court for the Northern District of Texas dismissed MC Asset Recovery's complaint against the Commerzbank Defendants. In January 2011, MC Asset Recovery appealed the District Court's dismissal of its complaint against the Commerzbank Defendants to the U.S. Court of Appeals for the Fifth Circuit, or the Fifth Circuit. In March 2012, the Fifth Circuit reversed the District Court's dismissal and reinstated MC Asset Recovery's amended complaint against the Commerzbank Defendants. On December 10, 2015, the District Court granted summary judgment in favor of the Commerzbank Defendants. On December 29, 2015, MC Asset Recovery filed a notice to appeal this judgment. On July 29, 2016, MC Asset Recovery filed its appeal with the Fifth Circuit. Natural Gas Litigation (GenOn) — GenOn is party to several lawsuits, certain of which are class action lawsuits, in state and federal courts in Kansas, Missouri, Nevada and Wisconsin. These lawsuits were filed in the aftermath of the California energy crisis in 2000 and 2001 and the resulting FERC investigations and relate to alleged conduct to increase natural gas prices in violation of state antitrust law and similar laws. The lawsuits seek treble or punitive damages, restitution and/or expenses. The lawsuits also name as parties a number of energy companies unaffiliated with NRG. In July 2011, the U.S. District Court for the District of Nevada, which was handling four of the five cases, granted the defendants' motion for summary judgment and dismissed all claims against GenOn in those cases. The plaintiffs appealed to the U.S. Court of Appeals for the Ninth Circuit which reversed the decision of the District Court. GenOn along with the other defendants in the lawsuit filed a petition for a writ of certiorari to the U.S. Supreme Court challenging the Court of Appeals' decision and the Supreme Court granted the petition. On April 21, 2015, the Supreme Court affirmed the Ninth Circuit’s holding that plaintiffs’ state antitrust law claims are not field-preempted by the federal Natural Gas Act and the Supremacy Clause of the U.S. Constitution. The Supreme Court left open whether the claims were preempted on the basis of conflict preemption. The Supreme Court directed that the case be remanded to the U.S. District Court for the District of Nevada for further proceedings. On March 7, 2016, class plaintiffs filed their motions for class certification. Defendants filed their briefs in opposition to class plaintiffs motions for class certification on June 24, 2016. On May 20, 2016, the U.S. District Court for the District of Nevada heard argument on the defendants' motion for summary judgment in one of the Kansas cases. On May 24, 2016, the court granted the motion for summary judgment as to the GenOn entity in one of the Kansas cases. GenOn has agreed to indemnify CenterPoint against certain losses relating to these lawsuits. In September 2012, the State of Nevada Supreme Court, which was handling the remaining case, affirmed dismissal by the Eighth Judicial District Court for Clark County, Nevada of all plaintiffs' claims against GenOn. In February 2013, the plaintiffs in the Nevada case filed a petition for a writ of certiorari to the U.S. Supreme Court. In June 2013, the Supreme Court denied the petition for a writ of certiorari, thereby ending one of the five lawsuits. Maryland Department of the Environment v. GenOn Chalk Point and GenOn Mid-Atlantic — On January 25, 2013, Food & Water Watch, the Patuxent Riverkeeper and the Potomac Riverkeeper (together, the Citizens Group) sent GenOn Mid-Atlantic a letter alleging that the Chalk Point, Dickerson and Morgantown generating facilities were violating the terms of the three National Pollution Discharge Elimination System permits by discharging nitrogen and phosphorous in excess of the limits in each permit. On March 21, 2013, the MDE sent GenOn Mid-Atlantic a similar letter with respect to the Chalk Point and Dickerson generating facilities, threatening to sue within 60 days if the generating facilities were not brought into compliance. On June 11, 2013, the Maryland Attorney General on behalf of the MDE filed a complaint in the U.S. District Court for the District of Maryland alleging violations of the CWA and Maryland environmental laws related to water. In July 2016, the parties signed a consent decree, which will settle the matter, subject to approval by the court. The consent decree requires: (1) improving the wastewater treatment systems at the Chalk Point and Dickerson facilities; (2) completing supplemental environmental projects worth $1 million ; and (3) paying a civil penalty of $1 million . Chapter 11 Proceedings (GenOn and GenOn Americas Generation) — In July 2003, and various dates thereafter, the Mirant Debtors filed voluntary petitions in the Bankruptcy Court for relief under Chapter 11 of the U.S. Bankruptcy Code. GenOn Energy Holdings and most of the other Mirant Debtors emerged from bankruptcy on January 3, 2006, when the Plan became effective. The remaining Mirant Debtors emerged from bankruptcy on various dates in 2007. Approximately 461,000 of the shares of GenOn Energy Holdings common stock to be distributed under the Plan have not yet been distributed and have been reserved for distribution with respect to claims disputed by the Mirant Debtors that have not been resolved. Upon the Mirant/RRI Merger, those reserved shares converted into a reserve for approximately 1.3 million shares of GenOn common stock. Upon the NRG Merger, those reserved shares converted into a reserve for approximately 159,000 shares of NRG common stock. Under the terms of the Plan, upon the resolution of such a disputed claim, the claimant will receive the same pro rata distributions of common stock, cash, or both as previously allowed claims, regardless of the price at which the common stock is trading at the time the claim is resolved. If the aggregate amount of any such payouts results in the number of reserved shares being insufficient, additional shares of common stock may be issued to address the shortfall. Potomac River Environmental Investigation — In March 2013, NRG Potomac River LLC received notice that the District of Columbia Department of Environment (now renamed the Department of Energy and Environment, or DOEE) was investigating potential discharges to the Potomac River originating from the Potomac River Generating facility site, a site where the generation facility is no longer in operation. In connection with that investigation, DOEE served a civil subpoena on NRG Potomac River LLC requesting information related to the site and potential discharges occurring from the site. NRG Potomac River LLC provided various responsive materials. In January 2016, DOEE advised NRG Potomac River LLC that DOEE believed various environmental violations had occurred as a result of discharges DOEE believes occurred to the Potomac River from the Potomac River Generating facility site and as a result of associated failures to accurately or sufficiently report such discharges. DOEE has indicated it believes that penalties are appropriate in light of the violations. The Registrants are currently reviewing the information provided by DOEE. |
Regulatory Matters
Regulatory Matters | 6 Months Ended |
Jun. 30, 2016 | |
Regulatory Matters Disclosure [Abstract] | |
Regulatory Matters (GenOn, GenOn Americas Generation, GenOn Mid-Atlantic) | Regulatory Matters (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) This footnote should be read in conjunction with the complete description under Note 16 , Regulatory Matters , to the Registrants' 2015 Form 10-K. The Registrants operate in a highly regulated industry and are subject to regulation by various federal and state agencies. As such, the Registrants are affected by regulatory developments at both the federal and state levels and in the regions in which they operate. In addition, the Registrants are subject to the market rules, procedures, and protocols of the various ISO and RTO markets in which they participate. These power markets are subject to ongoing legislative and regulatory changes that may impact the Registrants' wholesale business. In addition to the regulatory proceeding noted below, the Registrants are parties to other regulatory proceedings arising in the ordinary course of business or have other regulatory exposure. In management's opinion, the disposition of these ordinary course matters will not materially adversely affect the Registrants’ respective consolidated financial position, results of operations, or cash flows. PJM Capacity Performance Appeals — On or about July 8, 2016, four petitions were filed at the U.S. Court of Appeals for the D.C. Circuit seeking review of the FERC orders approving PJM’s Capacity Performance revisions to its forward capacity market after motions for rehearing at FERC were denied on May 10, 2016. The Registrants intervened in these matters on July 29, 2016. This case governs capacity revenues already received by the Registrants, as well as the revenues for forward periods. |
Environmental Matters
Environmental Matters | 6 Months Ended |
Jun. 30, 2016 | |
Environmental Matters Disclosure [Abstract] | |
Environmental Matters (GenOn, GenOn Americas Generation, GenOn Mid-Atlantic) | Environmental Matters (GenOn, GenOn Americas Generation and GenOn Mid-Atlantic) This footnote should be read in conjunction with the complete description under Note 17 , Environmental Matters , to the Registrants' 2015 Form 10-K. The Registrants are subject to a wide range of environmental laws in the development, construction, ownership and operation of projects. These laws generally require that governmental permits and approvals be obtained before construction and during operation of power plants. Environmental laws have become increasingly stringent and the Registrants expect this trend to continue. The electric generation industry is facing new requirements regarding GHGs, combustion byproducts, water discharge and use, and threatened and endangered species. In general, future laws are expected to require the addition of emissions controls or other environmental controls or to impose certain restrictions on the operations of the Registrants' facilities, which could have a material effect on the Registrants' operations. The EPA finalized CSAPR in 2011, which was intended to replace CAIR in January 2012, to address certain states' obligations to reduce emissions so that downwind states can achieve federal air quality standards. In December 2011, the D.C. Circuit stayed the implementation of CSAPR and then vacated CSAPR in August 2012 but kept CAIR in place until the EPA could replace it. In April 2014, the U.S. Supreme Court reversed and remanded the D.C. Circuit's decision. In October 2014, the D.C. Circuit lifted the stay of CSAPR. In response, the EPA in November 2014 amended the CSAPR compliance dates. Accordingly, CSAPR replaced CAIR on January 1, 2015. On July 28, 2015, the D.C. Circuit held that the EPA had exceeded its authority by requiring certain reductions that were not necessary for downwind states to achieve federal standards. Although the D.C. Circuit kept the rule in place, the court ordered the EPA to revise the Phase 2 (or 2017) (i) SO 2 budgets for four states and (ii) ozone-season NO x budgets for 11 states including Maryland, New Jersey, New York, Ohio and Pennsylvania. The EPA is currently reviewing the decision. In December 2015, the EPA proposed the CSAPR Update Rule using the 2008 Ozone NAAQS, which would reduce the total amount of ozone season NO x as compared with the previously utilized 1997 Ozone NAAQS. If finalized, this proposal would reduce future NO x allocations and/or current banked allowances. While the Registrants cannot predict the final outcome of this rulemaking, the Registrants believe their investment in pollution controls and cleaner technologies leave the fleet well-positioned for compliance. In February 2012, the EPA promulgated standards (the MATS rule) to control emissions of HAPs from coal and oil-fired electric generating units. The rule established limits for mercury, non-mercury metals, certain organics and acid gases, which limits had to be met beginning in April 2015 (with some units getting a 1-year extension). In June 2015, the U.S. Supreme Court issued a decision in the case of Michigan v. EPA , and held that the EPA unreasonably refused to consider costs when it determined that it was "appropriate and necessary" to regulate HAPs emitted by electric generating units. The U.S. Supreme Court did not vacate the MATS rule but rather remanded it to the D.C. Circuit for further proceedings. In December 2015, the D.C. Circuit remanded the MATS rule to the EPA without vacatur. On April 25, 2016, the EPA released a supplemental finding that the benefits of this regulation outweigh the costs to address the U.S. Supreme Court's ruling that the EPA had not properly considered costs. This finding has been challenged in the D.C. Circuit. While the Registrants cannot predict the final outcome of this rulemaking, the Registrants believe that because they have already invested in pollution controls and cleaner technologies, their fleet is well-positioned to comply with the MATS rule. Water In August 2014, the EPA finalized the regulation regarding the use of water for once through cooling at existing facilities to address impingement and entrainment concerns. The Registrants anticipate that more stringent requirements will be incorporated into some of their water discharge permits over the next several years as NPDES permits are renewed. Byproducts, Wastes, Hazardous Materials and Contamination In April 2015, the EPA finalized the rule regulating byproducts of coal combustion (e.g., ash and gypsum) as solid wastes under the RCRA. The Registrants have evaluated the impact of the new rule on their results of operations, financial condition and cash flows and have accrued their environmental and asset retirement obligations under the rule based on current estimates as of June 30, 2016. Environmental Capital Expenditures GenOn estimates that environmental capital expenditures from 2016 through 2020 required to comply with environmental laws will be approximately $61 million for GenOn, which includes $13 million for GenOn Americas Generation. The amount for GenOn Americas Generation includes $9 million for GenOn Mid-Atlantic. The majority of these costs will be expended by the end of 2016. |
Basis of Presentation Reclassif
Basis of Presentation Reclassification (Policies) | 6 Months Ended |
Jun. 30, 2016 | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Reclassification, Policy [Policy Text Block] | Reclassifications Certain prior year amounts have been reclassified for comparative purposes. The reclassifications did not affect results from operations, net assets or cash flows. |
Basis of Presentation Use of Es
Basis of Presentation Use of Estimates (Policies) | 6 Months Ended |
Jun. 30, 2016 | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Use of Estimates, Policy [Policy Text Block] | Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. |
Summary of Significant Accoun22
Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Policies) | 6 Months Ended |
Jun. 30, 2016 | |
Accounting Policies [Abstract] | |
New Accounting Pronouncements, Policy [Policy Text Block] | Recent Accounting Developments (GenOn, GenOn Americas Generation, and GenOn Mid-Atlantic) ASU 2016-02 — In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), or ASU No. 2016-02. The amendments of ASU No. 2016-02 complete the joint effort between the FASB and the International Accounting Standards Board, or IASB, to develop a common leasing standard for GAAP and International Financial Reporting Standards, or IFRS, with the objective to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and to improve financial reporting. The guidance in ASU No. 2016-02 provides that a lessee that may have previously accounted for a lease as an operating lease under current GAAP should recognize the assets and liabilities that arise from a lease on the balance sheet. In addition, ASU No. 2016-02 expands the required quantitative and qualitative disclosures with regards to lease arrangements. The guidance in ASU No. 2016-02 is effective for fiscal years beginning after December 15, 2018, and interim periods within those annual periods. The adoption of ASU No. 2016-02 is required to be applied using a modified retrospective approach for the earliest period presented and early adoption is permitted. The Registrants are currently evaluating the impact of the standard on the Registrants' results of operations, cash flows and financial position. ASU 2016-01 — In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, or ASU No. 2016-01. The amendments of ASU No. 2016-01 eliminate available-for-sale classification of equity investments and require that equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be generally measured at fair value with changes in fair value recognized in net income. Further, the amendments require that financial assets and financial liabilities to be presented separately in the notes to the financial statements, grouped by measurement category and form of financial asset. The guidance in ASU No. 2016-01 is effective for financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within those annual periods. The Registrants are currently evaluating the impact of the standard on the Registrants' results of operations, cash flows and financial position. ASU 2014-09 — In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), or ASU No. 2014-09. The amendments of ASU No. 2014-09 complete the joint effort between the FASB and the IASB, to develop a common revenue standard for GAAP and IFRS, and to improve financial reporting. The guidance in ASU No. 2014-09 provides that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for the goods or services provided and establishes the following steps to be applied by an entity: (1) identify the contract with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when (or as) the entity satisfies the performance obligation. In August 2015, the FASB issued ASU No. 2015-14, which formally deferred the effective date by one year to make the guidance of ASU No. 2014-09 effective for annual reporting periods beginning after December 15, 2017, including interim periods therein. Early adoption is permitted, but not prior to the original effective date, which was for annual reporting periods beginning after December 15, 2016. In addition to ASU No. 2014-09, the FASB has issued additional guidance which provides further clarification on Topic 606. In March 2016, the FASB issued ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606), or ASU No. 2016-08. The amendments of ASU No. 2016-08 clarify how to apply the implementation guidance on principal versus agent considerations related to the sale of goods or services to a customer as updated by ASU No. 2014-09. In April 2016, the FASB issued ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606), or ASU No. 2016-10. The amendments of ASU No. 2016-10 provide further clarification on contract revenue recognition as updated by ASU No. 2014-09, specifically related to the identification of separately identifiable performance obligations and the implementation of licensing contracts. In May 2016, the FASB issued ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606), or ASU No. 2016-12. The amendments of ASU No. 2016-12 provide further clarification on contract revenue recognition as updated by ASU No. 2014-09, specifically related to collectibility, the presentation of tax collected from customers, and non-cash consideration, as well as offering practical expedients. The Registrants are working through an adoption plan which includes the evaluation of revenue contracts compared to the new standard and evaluating the impact of Topic 606 on the Registrants' results of operations, cash flows and financial position. |
Fair Value of Financial Instr23
Fair Value of Financial Instruments (Tables) | 6 Months Ended |
Jun. 30, 2016 | |
Fair Value of Financial Instruments | |
Estimated carrying amounts and fair values of recorded financial instruments not carried at fair market value | The estimated carrying amounts and fair values of GenOn and GenOn Americas Generation’s debt are as follows: GenOn As of June 30, 2016 As of December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value (In millions) Long-term debt, including current portion $ 2,735 $ 2,043 $ 2,764 $ 2,043 |
Assets and liabilities measured and recorded at fair value on the consolidated balance sheets on a recurring basis | GenOn The following tables present assets and liabilities (including affiliate amounts) measured and recorded at fair value on GenOn’s consolidated balance sheet on a recurring basis and their level within the fair value hierarchy: As of June 30, 2016 Fair Value Level 1 (a) Level 2 (a) Level 3 Total (In millions) Derivative assets: Commodity contracts $ 106 $ 350 $ 3 $ 459 Derivative liabilities: Commodity contracts $ 49 $ 339 $ 14 $ 402 Other assets (b) $ 11 $ — $ — $ 11 (a) There were no transfers between Levels 1 and 2 during the three and six months ended June 30, 2016 . (b) Relates to mutual funds held in a rabbi trust for non-qualified deferred compensation plans for certain key and highly compensated employees. As of December 31, 2015 Fair Value Level 1 (a) Level 2 (a) Level 3 Total (In millions) Derivative assets: Commodity contracts $ 192 $ 535 $ 2 $ 729 Derivative liabilities: Commodity contracts $ 157 $ 420 $ 14 $ 591 Other assets (b) $ 14 $ — $ — $ 14 (a) There were no transfers between Levels 1 and 2 during the year ended December 31, 2015 . (b) Relates to mutual funds held in a rabbi trust for non-qualified deferred compensation plans for certain key and highly compensated employees. |
Reconciliation of beginning and ending balances for financial instruments that are recognized at fair value in the consolidated financial statements at least annually using significant unobservable inputs | The following table reconciles, for the three and six months ended June 30, 2016 , and 2015 , the beginning and ending balances for derivatives that are recognized at fair value in GenOn's consolidated financial statements at least annually using significant unobservable inputs: Fair Value Measurement Using Significant Unobservable Inputs (Level 3) Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 Derivatives (a) Derivatives (a) (In millions) Beginning balance $ (14 ) $ 16 $ (12 ) $ 33 Total gains/(losses) included in earnings — realized/unrealized 1 (13 ) (1 ) (26 ) Purchases 2 11 2 7 Ending balance $ (11 ) $ 14 $ (11 ) $ 14 (Losses)/gains for the period included in earnings attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of June 30 $ (2 ) $ 1 $ (8 ) $ (6 ) (a) Consists of derivative assets and liabilities, net. |
Fair Value Inputs, Sensitivity Analysis [Table Text Block] | The following table provides sensitivity of fair value measurements to increases/(decreases) in significant unobservable inputs as of June 30, 2016 , and December 31, 2015 : Significant Unobservable Input Position Change In Input Impact on Fair Value Measurement Forward Market Price Power/Coal Buy Increase/(Decrease) Higher/(Lower) Forward Market Price Power/Coal Sell Increase/(Decrease) Lower/(Higher) FTR Prices Buy Increase/(Decrease) Higher/(Lower) FTR Prices Sell Increase/(Decrease) Lower/(Higher) |
Schedule of credit reserves for derivative contract assets | The Registrants' (non-performance)/credit reserves were as follows: As of June 30, 2016 As of December 31, 2015 (In millions) GenOn $ (1 ) $ (1 ) GenOn Americas Generation (1 ) — GenOn Mid-Atlantic 1 4 |
Net counterparty credit exposure by industry sector and by counterparty credit quality | The following tables highlight net counterparty credit exposure by industry sector and by counterparty credit quality. Net counterparty credit exposure is defined as the aggregate net asset position for the Registrants with counterparties where netting is permitted under the enabling agreement and includes all cash flow, mark-to-market, NPNS and non-derivative transactions. The exposure is shown net of collateral held and includes amounts net of receivables or payables. Net Exposure (a) (% of Total) Category GenOn GenOn Americas Generation GenOn Mid-Atlantic Financial institutions 49 % 57 % — % Utilities, energy merchants, marketers and other 29 17 — ISOs 22 26 — Total as of June 30, 2016 100 % 100 % — % Net Exposure (a) (% of Total) Category GenOn GenOn Americas Generation GenOn Mid-Atlantic Investment grade 97 % 99 % — % Below investment grade 1 1 — Non-rated (b) 2 — — Total as of June 30, 2016 100 % 100 % — % |
GenOn Americas Generation | |
Fair Value of Financial Instruments | |
Estimated carrying amounts and fair values of recorded financial instruments not carried at fair market value | GenOn Americas Generation As of June 30, 2016 As of December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value (In millions) Long-term debt $ 748 $ 545 $ 752 $ 500 |
Assets and liabilities measured and recorded at fair value on the consolidated balance sheets on a recurring basis | GenOn Americas Generation The following tables present assets and liabilities (including affiliate amounts) measured and recorded at fair value on GenOn Americas Generation's consolidated balance sheet on a recurring basis and their level within the fair value hierarchy: As of June 30, 2016 Fair Value Level 1 (a) Level 2 (a) Level 3 Total (In millions) Derivative assets: Commodity contracts $ 130 $ 543 $ 18 $ 691 Derivative liabilities: Commodity contracts $ 70 $ 571 $ 17 $ 658 (a) There were no transfers between Levels 1 and 2 during the three and six months ended June 30, 2016 . As of December 31, 2015 Fair Value Level 1 (a) Level 2 (a) Level 3 Total (In millions) Derivative assets: Commodity contracts $ 285 $ 796 $ 15 $ 1,096 Derivative liabilities: Commodity contracts $ 170 $ 735 $ 14 $ 919 (a) There were no transfers between Levels 1 and 2 during the year ended December 31, 2015 . |
Reconciliation of beginning and ending balances for financial instruments that are recognized at fair value in the consolidated financial statements at least annually using significant unobservable inputs | The following table reconciles, for the three and six months ended June 30, 2016 , and 2015 , the beginning and ending balances for GenOn Americas Generation's derivatives that are recognized at fair value in the consolidated financial statements at least annually using significant unobservable inputs: Fair Value Measurement Using Significant Unobservable Inputs (Level 3) Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 Derivatives (a) Derivatives (a) (In millions) Beginning balance $ 2 $ 16 $ 1 $ 20 Total losses included in earnings — realized/unrealized (2 ) (9 ) (1 ) (10 ) Purchases 1 5 1 2 Ending balance $ 1 $ 12 $ 1 $ 12 Gains for the period included in earnings attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of June 30 $ — $ 3 $ — $ 2 (a) Consists of derivative assets and liabilities, net. |
Fair Value Inputs, Assets, Quantitative Information [Table Text Block] | GenOn Americas Generation Significant Unobservable Inputs June 30, 2016 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) Power Contracts $ 1 $ — Discounted Cash Flow Forward Market Price (per MWh) $ 26 $ 71 $ 43 Coal Contracts 13 14 Discounted Cash Flow Forward Market Price (per ton) 28 38 33 FTRs 4 3 Discounted Cash Flow Auction Prices (per MWh) (2 ) 3 — $ 18 $ 17 Significant Unobservable Inputs December 31, 2015 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) Power Contracts $ 1 $ — Discounted Cash Flow Forward Market Price (per MWh) $ 22 $ 67 $ 42 Coal Contracts 12 12 Discounted Cash Flow Forward Market Price (per ton) 28 45 35 FTRs 2 2 Discounted Cash Flow Auction Prices (per MWh) — 3 1 $ 15 $ 14 |
GenOn Mid-Atlantic | |
Fair Value of Financial Instruments | |
Assets and liabilities measured and recorded at fair value on the consolidated balance sheets on a recurring basis | GenOn Mid-Atlantic The following tables present assets and liabilities (including affiliate amounts) measured and recorded at fair value on GenOn Mid-Atlantic's consolidated balance sheet on a recurring basis and their level within the fair value hierarchy: As of June 30, 2016 Fair Value Level 1 (a) Level 2 (a) Level 3 Total (In millions) Derivative assets: Commodity contracts $ 80 $ 109 $ 1 $ 190 Derivative liabilities: Commodity contracts $ 24 $ 126 $ — $ 150 (a) There were no transfers between Levels 1 and 2 during the three and six months ended June 30, 2016 . As of December 31, 2015 Fair Value Level 1 (a) Level 2 (a) Level 3 Total (In millions) Derivative assets: Commodity contracts $ 175 $ 175 $ 2 $ 352 Derivative liabilities: Commodity contracts $ 58 $ 137 $ — $ 195 (a) There were no transfers between Levels 1 and 2 during the year ended December 31, 2015 . |
Reconciliation of beginning and ending balances for financial instruments that are recognized at fair value in the consolidated financial statements at least annually using significant unobservable inputs | The following table reconciles, for the three and six months ended June 30, 2016 , and 2015 , the beginning and ending balances for GenOn Mid-Atlantic's derivatives that are recognized at fair value in the consolidated financial statements at least annually using significant unobservable inputs: Fair Value Measurement Using Significant Unobservable Inputs (Level 3) Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 Derivatives (a) Derivatives (a) (In millions) Beginning balance $ 2 $ 16 $ 2 $ 20 Total losses included in earnings — realized/unrealized (1 ) (9 ) (1 ) (10 ) Purchases — 6 — 3 Ending balance $ 1 $ 13 $ 1 $ 13 Gains for the period included in earnings attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of June 30 $ — $ 3 $ — $ 2 (a) Consists of derivative assets and liabilities, net. |
Fair Value Inputs, Assets, Quantitative Information [Table Text Block] | GenOn Mid-Atlantic Significant Unobservable Inputs June 30, 2016 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) FTRs $ 1 $ — Discounted Cash Flow Auction Prices (per MWh) $ — $ 1 $ — $ 1 $ — Significant Unobservable Inputs December 31, 2015 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) Power Contracts $ 2 $ — Discounted Cash Flow Forward Market Price (per MWh) $ 22 $ 67 $ 42 $ 2 $ — |
GenOn | |
Fair Value of Financial Instruments | |
Fair Value Inputs, Assets, Quantitative Information [Table Text Block] | GenOn Significant Unobservable Inputs June 30, 2016 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) Coal Contracts — 13 Discounted Cash Flow Forward Market Price (per ton) 28 38 33 FTRs 3 1 Discounted Cash Flow Auction Prices (per MWh) (2 ) 3 — $ 3 $ 14 Significant Unobservable Inputs December 31, 2015 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) Power Contracts $ 1 $ — Discounted Cash Flow Forward Market Price (per MWh) $ 22 $ 67 $ 42 Coal Contracts — 12 Discounted Cash Flow Forward Market Price (per ton) 28 45 35 FTRs 1 2 Discounted Cash Flow Auction Prices (per MWh) — 3 1 $ 2 $ 14 |
Accounting for Derivative Ins24
Accounting for Derivative Instruments and Hedging Activities (Tables) | 6 Months Ended |
Jun. 30, 2016 | |
Accounting for Derivative Instruments and Hedging Activities | |
Net notional volume buy/(sell) of open derivative transactions broken out by commodity | The following table summarizes the net notional volume buy/(sell) of the Registrants’ open derivative transactions broken out by commodity, excluding those derivatives that qualified for the NPNS exception as of June 30, 2016 , and December 31, 2015 . Option contracts are reflected using delta volume. Delta volume equals the notional volume of an option adjusted for the probability that the option will be in-the-money at its expiration date. GenOn GenOn Americas Generation GenOn Mid-Atlantic Total Volume Total Volume Total Volume As of June 30, 2016 As of December 31, 2015 As of June 30, 2016 As of December 31, 2015 As of June 30, 2016 As of December 31, 2015 Commodity Units (In millions) Emissions Short Ton 1 — 1 — 1 — Coal Short Ton 5 7 3 3 3 3 Natural Gas MMBtu 175 191 20 2 11 (10) Power MWh (40 ) (49) (15 ) (20) (14 ) (18) |
Fair value within the derivative instrument valuation on the balance sheets | The following tables summarize the fair value within the derivative instrument valuation on the balance sheet: GenOn Fair Value Derivative Assets Derivative Liabilities June 30, 2016 December 31, 2015 June 30, 2016 December 31, 2015 (In millions) Derivatives Not Designated as Cash Flow Hedges: Commodity contracts current $ 320 $ 574 $ 309 $ 475 Commodity contracts long-term 139 155 93 116 Total Derivatives Not Designated as Cash Flow Hedges $ 459 $ 729 $ 402 $ 591 |
Offsetting of derivatives by counterparty master agreement level and collateral received or paid | The following tables summarize the offsetting of derivatives by counterparty master agreement level and collateral received or paid: GenOn Gross Amounts Not Offset in the Statement of Financial Position Description Gross Amounts of Recognized Assets / Liabilities Derivative Instruments Cash Collateral (Held) / Posted Net Amount June 30, 2016 (In millions) Commodity contracts: Derivative assets $ 449 $ (293 ) $ (53 ) $ 103 Derivative assets - affiliate 10 (10 ) — — Derivative liabilities (389 ) 293 8 (88 ) Derivative liabilities - affiliate (13 ) 10 3 — Total derivative instruments $ 57 $ — $ (42 ) $ 15 Gross Amounts Not Offset in the Statement of Financial Position Description Gross Amounts of Recognized Assets / Liabilities Derivative Instruments Cash Collateral (Held) / Posted Net Amount December 31, 2015 (In millions) Commodity contracts: Derivative assets $ 698 $ (485 ) $ (51 ) $ 162 Derivative assets - affiliate 31 (24 ) — 7 Derivative liabilities (567 ) 485 — (82 ) Derivative liabilities - affiliate (24 ) 24 — — Total derivative instruments $ 138 $ — $ (51 ) $ 87 |
Pre-tax effects of economic hedges that have not been designated as cash flow hedges and trading activity on the statements of operations | The following tables summarize the pre-tax effects of economic hedges. These amounts are included within operating revenues and cost of operations. GenOn Three months ended June 30, Six months ended June 30, (In millions) 2016 2015 2016 2015 Unrealized mark-to-market results Reversal of previously recognized unrealized gains on settled positions related to economic hedges $ (46 ) $ (41 ) $ (116 ) $ (127 ) Net unrealized (losses)/gains on open positions related to economic hedges (19 ) 56 25 (6 ) Total unrealized (losses)/gains $ (65 ) $ 15 $ (91 ) $ (133 ) Three months ended June 30, Six months ended June 30, (In millions) 2016 2015 2016 2015 Revenue from operations — energy commodities $ (64 ) $ 25 $ (91 ) $ (74 ) Cost of operations (1 ) (10 ) — (59 ) Total impact to statements of operations $ (65 ) $ 15 $ (91 ) $ (133 ) |
GenOn Americas Generation | |
Accounting for Derivative Instruments and Hedging Activities | |
Fair value within the derivative instrument valuation on the balance sheets | GenOn Americas Generation Fair Value Derivative Assets Derivative Liabilities June 30, 2016 December 31, 2015 June 30, 2016 December 31, 2015 (In millions) Derivatives Not Designated as Cash Flow Hedges : Commodity contracts current $ 496 $ 861 $ 477 $ 737 Commodity contracts long-term 195 235 181 182 Total Derivatives Not Designated as Cash Flow Hedges $ 691 $ 1,096 $ 658 $ 919 |
Offsetting of derivatives by counterparty master agreement level and collateral received or paid | GenOn Americas Generation Gross Amounts Not Offset in the Statement of Financial Position Description Gross Amounts of Recognized Assets / Liabilities Derivative Instruments Cash Collateral (Held) / Posted Net Amount June 30, 2016 (In millions) Commodity contracts: Derivative assets $ 449 $ (293 ) $ (53 ) $ 103 Derivative assets - affiliate 242 (229 ) — 13 Derivative liabilities (389 ) 293 8 (88 ) Derivative liabilities - affiliate (269 ) 229 4 (36 ) Total derivative instruments $ 33 $ — $ (41 ) $ (8 ) Gross Amounts Not Offset in the Statement of Financial Position Description Gross Amounts of Recognized Assets / Liabilities Derivative Instruments Cash Collateral (Held) / Posted Net Amount December 31, 2015 (In millions) Commodity contracts: Derivative assets $ 699 $ (485 ) $ (51 ) $ 163 Derivative assets - affiliate 397 (352 ) — 45 Derivative liabilities (567 ) 485 — (82 ) Derivative liabilities - affiliate (352 ) 352 — — Total derivative instruments $ 177 $ — $ (51 ) $ 126 |
Pre-tax effects of economic hedges that have not been designated as cash flow hedges and trading activity on the statements of operations | GenOn Americas Generation Three months ended June 30, Six months ended June 30, (In millions) 2016 2015 2016 2015 Unrealized mark-to-market results Reversal of previously recognized unrealized gains on settled positions related to economic hedges $ (52 ) $ (35 ) $ (119 ) $ (130 ) Net unrealized (losses)/gains on open positions related to economic hedges (42 ) 33 (29 ) 11 Total unrealized losses $ (94 ) $ (2 ) $ (148 ) $ (119 ) Three months ended June 30, Six months ended June 30, (In millions) 2016 2015 2016 2015 Revenue from operations — energy commodities $ (97 ) $ 6 $ (153 ) $ (80 ) Cost of operations 3 (8 ) 5 (39 ) Total impact to statements of operations $ (94 ) $ (2 ) $ (148 ) $ (119 ) |
GenOn Mid-Atlantic | |
Accounting for Derivative Instruments and Hedging Activities | |
Fair value within the derivative instrument valuation on the balance sheets | GenOn Mid-Atlantic Fair Value Derivative Assets Derivative Liabilities June 30, 2016 December 31, 2015 June 30, 2016 December 31, 2015 (In millions) Derivatives Not Designated as Cash Flow Hedges : Commodity contracts current $ 141 $ 269 $ 116 $ 163 Commodity contracts long-term 49 83 34 32 Total Derivatives Not Designated as Cash Flow Hedges $ 190 $ 352 $ 150 $ 195 |
Offsetting of derivatives by counterparty master agreement level and collateral received or paid | GenOn Mid-Atlantic Gross Amounts Not Offset in the Statement of Financial Position Description Gross Amounts of Recognized Assets / Liabilities Derivative Instruments Cash Collateral (Held) / Posted Net Amount June 30, 2016 (In millions) Commodity contracts: Derivative assets - affiliate $ 190 $ (150 ) $ — $ 40 Derivative liabilities - affiliate (150 ) 150 — — Total derivative instruments $ 40 $ — $ — $ 40 Gross Amounts Not Offset in the Statement of Financial Position Description Gross Amounts of Recognized Assets / Liabilities Derivative Instruments Cash Collateral (Held) / Posted Net Amount December 31, 2015 (In millions) Commodity contracts: Derivative assets - affiliate $ 352 $ (195 ) $ — $ 157 Derivative liabilities - affiliate (195 ) 195 — — Total derivative instruments $ 157 $ — $ — $ 157 |
Pre-tax effects of economic hedges that have not been designated as cash flow hedges and trading activity on the statements of operations | GenOn Mid-Atlantic Three months ended June 30, Six months ended June 30, (In millions) 2016 2015 2016 2015 Unrealized mark-to-market results Reversal of previously recognized unrealized gains on settled positions related to economic hedges $ (47 ) $ (32 ) $ (99 ) $ (59 ) Net unrealized (losses)/gains on open positions related to economic hedges (34 ) 19 (22 ) (9 ) Total unrealized losses $ (81 ) $ (13 ) $ (121 ) $ (68 ) Three months ended June 30, Six months ended June 30, (In millions) 2016 2015 2016 2015 Revenue from operations — energy commodities $ (84 ) $ (4 ) $ (120 ) $ (28 ) Cost of operations 3 (9 ) (1 ) (40 ) Total impact to statements of operations $ (81 ) $ (13 ) $ (121 ) $ (68 ) |
Debt and Capital Leases (Tables
Debt and Capital Leases (Tables) | 6 Months Ended |
Jun. 30, 2016 | |
Debt Instrument [Line Items] | |
Schedule Of Long Term Debt And Capital Leases [Table Text Block] | Long-term debt and capital leases consisted of the following: (In millions, except rates) June 30, 2016 December 31, 2015 June 30, 2016 interest rate % GenOn Americas Generation: Senior unsecured notes, due 2021 $ 395 $ 398 8.500 Senior unsecured notes, due 2031 353 354 9.125 Subtotal GenOn Americas Generation 748 752 GenOn Energy: Senior unsecured notes, due 2017 707 714 7.875 Senior unsecured notes, due 2018 698 708 9.500 Senior unsecured notes, due 2020 529 534 9.875 Other liability (a) 53 56 GenOn capital lease 2 2 Subtotal GenOn Energy 1,989 2,014 Subtotal 2,737 2,766 Less current maturities 711 4 Total long-term debt and capital leases $ 2,026 $ 2,762 (a) The Long Term Service Agreement for the Hunterstown facility is accounted for as a debt financing liability in accordance with GAAP. |
Schedule of Long-term Debt Instruments [Table Text Block] | Long-term debt includes the following premiums: (In millions) June 30, 2016 December 31, 2015 GenOn Americas Generation: Senior unsecured notes, due 2021 $ 29 $ 32 Senior unsecured notes, due 2031 24 25 GenOn Energy: Senior unsecured notes, due 2017 16 23 Senior unsecured notes, due 2018 48 59 Senior unsecured notes, due 2020 40 44 Total premium $ 157 $ 183 |
Income Taxes (Tables)
Income Taxes (Tables) | 6 Months Ended |
Jun. 30, 2016 | |
Income Tax Disclosure [Abstract] | |
Income tax (benefit)/provision | GenOn’s income tax expense consisted of the following: Three months ended June 30, Six months ended June 30, (In millions except otherwise noted) 2016 2015 2016 2015 Loss before income taxes $ (116 ) $ (18 ) $ (16 ) $ (30 ) Income tax benefit — — (1 ) (1 ) Effective tax rate — % — % 6.3 % 3.3 % |
Related Party Transactions (Tab
Related Party Transactions (Tables) | 6 Months Ended |
Jun. 30, 2016 | |
GenOn Americas Generation | |
Related Party Transaction | |
Summary of material related-party transactions with affiliates | The following costs were incurred under these arrangements: GenOn Americas Generation Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 (In millions) Allocated costs: Cost of operations — affiliate $ 1 $ 2 $ 2 $ 2 General and administrative — affiliate 20 20 41 41 Total $ 21 $ 22 $ 43 $ 43 |
GenOn Mid-Atlantic | |
Related Party Transaction | |
Summary of material related-party transactions with affiliates | GenOn Mid-Atlantic Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 (In millions) Allocated costs: Cost of operations — affiliate $ 1 $ 1 $ 2 $ 1 General and administrative — affiliate 15 14 30 29 Total $ 16 $ 15 $ 32 $ 30 |
Basis of Presentation (Details)
Basis of Presentation (Details) $ in Millions | Jun. 30, 2016USD ($)MW | May 12, 2016MW | Dec. 31, 2015USD ($) | Jun. 30, 2015USD ($) | Dec. 31, 2014USD ($) |
Basis of Presentation | |||||
Generation capacity (in MW) | MW | 16,704 | ||||
Debt and Capital Lease Obligations | $ 2,737 | $ 2,766 | |||
Cash and Cash Equivalents, at Carrying Value | $ 641 | 665 | $ 1,020 | $ 920 | |
GenOn Mid-Atlantic | |||||
Basis of Presentation | |||||
Generation capacity (in MW) | MW | 4,605 | ||||
Cash and Cash Equivalents, at Carrying Value | $ 324 | 299 | 217 | 157 | |
GenOn Americas Generation | |||||
Basis of Presentation | |||||
Generation capacity (in MW) | MW | 7,907 | ||||
Debt and Capital Lease Obligations | $ 748 | 752 | |||
Cash and Cash Equivalents, at Carrying Value | 281 | 246 | $ 193 | $ 103 | |
REMA [Member] | |||||
Basis of Presentation | |||||
Cash and Cash Equivalents, at Carrying Value | $ 149 | ||||
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | |||||
Basis of Presentation | |||||
Generation capacity (in MW) | MW | 1,049 | ||||
Aurora Generating Station [Member] | |||||
Basis of Presentation | |||||
Generation capacity (in MW) | MW | 878 | ||||
Aurora Generating Station [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | |||||
Basis of Presentation | |||||
Generation capacity (in MW) | MW | 878 | ||||
Senior Notes [Member] | Senior Unsecured Notes 2017 [Member] | |||||
Basis of Presentation | |||||
Debt and Capital Lease Obligations | $ 707 | $ 714 |
Dispositions Dispositions (Deta
Dispositions Dispositions (Details) $ in Millions | Jul. 13, 2016USD ($) | May 13, 2016USD ($) | Mar. 02, 2016USD ($) | Feb. 03, 2016USD ($) | Nov. 25, 2015USD ($) | Nov. 10, 2015USD ($) | Jun. 30, 2016USD ($)MW | Mar. 31, 2016USD ($) | Jun. 30, 2016USD ($)MW | Jun. 30, 2015USD ($) | Jan. 01, 2019USD ($) | Jan. 01, 2018USD ($) | Jul. 12, 2016USD ($) | May 12, 2016USD ($)MW | Feb. 02, 2016USD ($) | Dec. 31, 2015USD ($) | Nov. 24, 2015MW | Nov. 09, 2015MW |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||||||||||||||||
Proceeds from Sale of Property, Plant, and Equipment | $ 120 | $ 0 | ||||||||||||||||
Power Generation Capacity, Megawatts | MW | 16,704 | 16,704 | ||||||||||||||||
Disposal Group, Including Discontinued Operation, Other Assets, Current | $ 2 | $ 2 | $ 6 | |||||||||||||||
Disposal Group, Including Discontinued Operation, Assets, Noncurrent | 175 | 175 | 105 | |||||||||||||||
Disposal Group, Including Discontinued Operation, Liabilities, Current | 2 | 2 | 2 | |||||||||||||||
Indemnification Costs | $ 91 | $ 183 | $ 365 | |||||||||||||||
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent | 0 | 0 | 4 | |||||||||||||||
Aurora Generating Station [Member] | ||||||||||||||||||
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||||||||||||||||
Proceeds from Sale of Property, Plant, and Equipment | $ 369 | $ 365 | ||||||||||||||||
Base Residual Auction Results Adjustments | $ 4 | |||||||||||||||||
Power Generation Capacity, Megawatts | MW | 878 | |||||||||||||||||
Disposal Group, Including Discontinued Operation, Other Assets, Current | 2 | 2 | ||||||||||||||||
Disposal Group, Including Discontinued Operation, Assets, Noncurrent | 175 | 175 | ||||||||||||||||
Disposal Group, Including Discontinued Operation, Liabilities, Current | 2 | $ 2 | ||||||||||||||||
Gain (Loss) On Disposition of Property Plant Equipment | $ 189 | |||||||||||||||||
Seward Generating Station [Member] | ||||||||||||||||||
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||||||||||||||||
Proceeds from Sale of Property, Plant, and Equipment | $ 75 | $ 75 | ||||||||||||||||
Power Generation Capacity, Megawatts | MW | 525 | |||||||||||||||||
Disposal Group, Including Discontinued Operation, Other Assets, Current | 5 | |||||||||||||||||
Disposal Group, Including Discontinued Operation, Assets, Noncurrent | 83 | |||||||||||||||||
Disposal Group, Including Discontinued Operation, Liabilities, Current | 1 | |||||||||||||||||
Percentage of Ownership | 100.00% | |||||||||||||||||
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent | 4 | |||||||||||||||||
Disposal Group, Including Discontinued Operation, Cash | $ 3 | |||||||||||||||||
Amount of Continuing Cash Flow After Disposition | 5 | |||||||||||||||||
Shelby County Energy Center, LLC [Member] | ||||||||||||||||||
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||||||||||||||||
Proceeds from Sale of Property, Plant, and Equipment | $ 46 | $ 46 | ||||||||||||||||
Power Generation Capacity, Megawatts | MW | 352 | |||||||||||||||||
Disposal Group, Including Discontinued Operation, Other Assets, Current | 1 | |||||||||||||||||
Disposal Group, Including Discontinued Operation, Assets, Noncurrent | 22 | |||||||||||||||||
Disposal Group, Including Discontinued Operation, Liabilities, Current | $ 1 | |||||||||||||||||
Gain (Loss) On Disposition of Property Plant Equipment | $ 29 | |||||||||||||||||
Percentage of Ownership | 100.00% | |||||||||||||||||
Future Revenue Rights | $ 10 | |||||||||||||||||
Robindale Energy Services, Inc [Member] | ||||||||||||||||||
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||||||||||||||||
Long-term Purchase Commitment, Amount | 13 | |||||||||||||||||
Annual [Member] | Seward Generating Station [Member] | ||||||||||||||||||
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||||||||||||||||
Amount of Continuing Cash Flow After Disposition | 1 | |||||||||||||||||
Environmental Testing [Member] | Seward Generating Station [Member] | ||||||||||||||||||
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||||||||||||||||
Amount of Continuing Cash Flow After Disposition | $ 2.5 |
Fair Value of Financial Instr30
Fair Value of Financial Instruments (Details 1 - CV and FV of Debt) - USD ($) $ in Millions | Jun. 30, 2016 | Dec. 31, 2015 |
Carrying Amount | ||
Fair Value of Financial Instruments | ||
Long-term debt, including current portion | $ 2,735 | $ 2,764 |
Fair Value | ||
Fair Value of Financial Instruments | ||
Long-term debt, including current portion | 2,043 | 2,043 |
GenOn Americas Generation | Carrying Amount | ||
Fair Value of Financial Instruments | ||
Long-term debt, including current portion | 748 | 752 |
GenOn Americas Generation | Fair Value | ||
Fair Value of Financial Instruments | ||
Long-term debt, including current portion | $ 545 | $ 500 |
Fair Value of Financial Instr31
Fair Value of Financial Instruments (Details 2 - Recurring FV) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended | |||
Jun. 30, 2016 | Jun. 30, 2016 | Dec. 31, 2015 | ||||
Fair Value, Measurements, Recurring | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Other assets (b) | $ 11 | [1] | $ 11 | [1] | $ 14 | [2] |
Fair Value, Measurements, Recurring | Commodity contracts | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Commodity contracts | 459 | 459 | 729 | |||
Commodity contracts | 402 | 402 | 591 | |||
Fair Value, Measurements, Recurring | Level 1 | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Other assets (b) | 11 | [1],[3] | 11 | [1],[3] | 14 | [2],[4] |
Fair Value, Measurements, Recurring | Level 1 | Commodity contracts | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Commodity contracts | 106 | [3] | 106 | [3] | 192 | [4] |
Commodity contracts | 49 | [3] | 49 | [3] | 157 | [4] |
Fair Value, Measurements, Recurring | Level 2 | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Other assets (b) | 0 | [1],[3] | 0 | [1],[3] | 0 | [2],[4] |
Fair Value, Measurements, Recurring | Level 2 | Commodity contracts | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Commodity contracts | 350 | [3] | 350 | [3] | 535 | [4] |
Commodity contracts | 339 | [3] | 339 | [3] | 420 | [4] |
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Other assets (b) | 0 | [1] | 0 | [1] | 0 | [2] |
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] | Commodity contracts | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Commodity contracts | 3 | 3 | 2 | |||
Commodity contracts | 14 | 14 | 14 | |||
GenOn | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Fair Value, Assets And Liabilities, Level 1 to Level 2 Transfers, Amount | 0 | 0 | 0 | |||
Fair Value, Assets And Liabilities, Level 2 to Level 1 Transfers, Amount | 0 | 0 | 0 | |||
GenOn Americas Generation | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Fair Value, Assets And Liabilities, Level 1 to Level 2 Transfers, Amount | 0 | 0 | 0 | |||
Fair Value, Assets And Liabilities, Level 2 to Level 1 Transfers, Amount | 0 | 0 | 0 | |||
GenOn Americas Generation | Fair Value, Measurements, Recurring | Commodity contracts | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Commodity contracts | 691 | 691 | 1,096 | |||
Commodity contracts | 658 | 658 | 919 | |||
GenOn Americas Generation | Fair Value, Measurements, Recurring | Level 1 | Commodity contracts | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Commodity contracts | 130 | [5] | 130 | [5] | 285 | [6] |
Commodity contracts | 70 | [5] | 70 | [5] | 170 | [6] |
GenOn Americas Generation | Fair Value, Measurements, Recurring | Level 2 | Commodity contracts | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Commodity contracts | 543 | [5] | 543 | [5] | 796 | [6] |
Commodity contracts | 571 | [5] | 571 | [5] | 735 | [6] |
GenOn Americas Generation | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] | Commodity contracts | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Commodity contracts | 18 | 18 | 15 | |||
Commodity contracts | 17 | 17 | 14 | |||
GenOn Mid-Atlantic | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Fair Value, Assets And Liabilities, Level 1 to Level 2 Transfers, Amount | 0 | 0 | 0 | |||
Fair Value, Assets And Liabilities, Level 2 to Level 1 Transfers, Amount | 0 | 0 | 0 | |||
GenOn Mid-Atlantic | Fair Value, Measurements, Recurring | Commodity contracts | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Commodity contracts | 190 | 190 | 352 | |||
Commodity contracts | 150 | 150 | 195 | |||
GenOn Mid-Atlantic | Fair Value, Measurements, Recurring | Level 1 | Commodity contracts | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Commodity contracts | 80 | [7] | 80 | [7] | 175 | [8] |
Commodity contracts | 24 | [7] | 24 | [7] | 58 | [8] |
GenOn Mid-Atlantic | Fair Value, Measurements, Recurring | Level 2 | Commodity contracts | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Commodity contracts | 109 | [7] | 109 | [7] | 175 | [8] |
Commodity contracts | 126 | [7] | 126 | [7] | 137 | [8] |
GenOn Mid-Atlantic | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] | Commodity contracts | ||||||
Fair Value Assets and Liabilities, Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||
Commodity contracts | 1 | 1 | 2 | |||
Commodity contracts | $ 0 | $ 0 | $ 0 | |||
[1] | Relates to mutual funds held in a rabbi trust for non-qualified deferred compensation plans for certain key and highly compensated employees. | |||||
[2] | Relates to mutual funds held in a rabbi trust for non-qualified deferred compensation plans for certain key and highly compensated employees. | |||||
[3] | There were no transfers between Levels 1 and 2 during the three and six months ended June 30, 2016. | |||||
[4] | There were no transfers between Levels 1 and 2 during the year ended December 31, 2015. | |||||
[5] | There were no transfers between Levels 1 and 2 during the three and six months ended June 30, 2016. | |||||
[6] | There were no transfers between Levels 1 and 2 during the year ended December 31, 2015. | |||||
[7] | There were no transfers between Levels 1 and 2 during the three and six months ended June 30, 2016. | |||||
[8] | There were no transfers between Levels 1 and 2 during the year ended December 31, 2015. |
Fair Value of Financial Instr32
Fair Value of Financial Instruments (Details 3 - Level 3 FV) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended | ||||||
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015 | Mar. 31, 2016 | Mar. 31, 2015 | Dec. 31, 2014 | ||
GenOn Americas Generation | |||||||||
Fair Value Asset and Liabilities, Measured on Recurring Basis, Unobservable Input Changes | |||||||||
Fair Value, Assets And Liabilities, Level 2 to Level 1 Transfers, Amount | $ 0 | $ 0 | $ 0 | ||||||
GenOn Mid-Atlantic | |||||||||
Fair Value Asset and Liabilities, Measured on Recurring Basis, Unobservable Input Changes | |||||||||
Fair Value, Assets And Liabilities, Level 2 to Level 1 Transfers, Amount | 0 | 0 | 0 | ||||||
GenOn | |||||||||
Fair Value Asset and Liabilities, Measured on Recurring Basis, Unobservable Input Changes | |||||||||
Fair Value, Assets And Liabilities, Level 2 to Level 1 Transfers, Amount | 0 | 0 | 0 | ||||||
Fair Value, Inputs, Level 3 [Member] | Derivative [Member] | |||||||||
Fair Value Asset and Liabilities, Measured on Recurring Basis, Unobservable Input Changes | |||||||||
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | [1] | (11) | $ 14 | (11) | $ 14 | (12) | $ (14) | $ 16 | $ 33 |
Reconciliation of the beginning and ending balances for financial instruments that are recognized at fair value in the consolidated financial statements | |||||||||
Total gains/(losses) included in earnings — realized/unrealized | [1] | 1 | (13) | (1) | (26) | ||||
Purchases | [1] | 2 | 11 | 2 | 7 | ||||
(Losses)/gains for the period included in earnings attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of June 30 | [1] | (2) | 1 | (8) | (6) | ||||
Fair Value, Inputs, Level 3 [Member] | Derivative [Member] | GenOn Americas Generation | |||||||||
Fair Value Asset and Liabilities, Measured on Recurring Basis, Unobservable Input Changes | |||||||||
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | [2] | 1 | 12 | 1 | 12 | 1 | 2 | 16 | 20 |
Reconciliation of the beginning and ending balances for financial instruments that are recognized at fair value in the consolidated financial statements | |||||||||
Total gains/(losses) included in earnings — realized/unrealized | [2] | (2) | (9) | (1) | (10) | ||||
Purchases | [2] | 1 | 5 | 1 | 2 | ||||
(Losses)/gains for the period included in earnings attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of June 30 | [2] | 0 | 3 | 0 | 2 | ||||
Fair Value, Inputs, Level 3 [Member] | Derivative [Member] | GenOn Mid-Atlantic | |||||||||
Fair Value Asset and Liabilities, Measured on Recurring Basis, Unobservable Input Changes | |||||||||
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | [3] | 1 | 13 | 1 | 13 | $ 2 | $ 2 | $ 16 | $ 20 |
Reconciliation of the beginning and ending balances for financial instruments that are recognized at fair value in the consolidated financial statements | |||||||||
Total gains/(losses) included in earnings — realized/unrealized | [3] | (1) | (9) | (1) | (10) | ||||
Purchases | [3] | 0 | 6 | 0 | 3 | ||||
(Losses)/gains for the period included in earnings attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of June 30 | [3] | $ 0 | $ 3 | $ 0 | $ 2 | ||||
[1] | Consists of derivative assets and liabilities, net. | ||||||||
[2] | Consists of derivative assets and liabilities, net. | ||||||||
[3] | a) Consists of derivative assets and liabilities, net. |
Fair Value of Financial Instr33
Fair Value of Financial Instruments Fair Value of Financial Instruments (Details 4 - Derivative FV) $ / T in Millions, $ / MWh in Millions, $ in Millions | Jun. 30, 2016USD ($)$ / T$ / MWh | Dec. 31, 2015USD ($)$ / T$ / MWh |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative Asset, Fair Value Determined Using Valuation Techniques, Percentage | 1.00% | |
Derivative Liability, Fair Value Determined Using Valuation Techniques, Percentage | 3.00% | |
GenOn Americas Generation | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative Asset, Fair Value Determined Using Valuation Techniques, Percentage | 3.00% | |
Derivative Liability, Fair Value Determined Using Valuation Techniques, Percentage | 3.00% | |
GenOn Mid-Atlantic | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative Asset, Fair Value Determined Using Valuation Techniques, Percentage | 1.00% | |
Derivative Liability, Fair Value Determined Using Valuation Techniques, Percentage | 0.00% | |
Commodity contracts | Fair Value, Measurements, Recurring | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | $ 459 | $ 729 |
Commodity contracts | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | 3 | 2 |
Derivative Liability, Fair Value, Gross Liability | 14 | 14 |
Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | 691 | 1,096 |
Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | 18 | 15 |
Derivative Liability, Fair Value, Gross Liability | 17 | 14 |
Commodity contracts | Fair Value, Measurements, Recurring | GenOn Mid-Atlantic | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | 190 | 352 |
Commodity contracts | Fair Value, Measurements, Recurring | GenOn Mid-Atlantic | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | 1 | 2 |
Derivative Liability, Fair Value, Gross Liability | 0 | 0 |
Power Contracts [Member] | Commodity contracts | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | 1 | |
Derivative Liability, Fair Value, Gross Liability | $ 0 | |
Power Contracts [Member] | Commodity contracts | Fair Value, Measurements, Recurring | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / MWh | 22 | |
Power Contracts [Member] | Commodity contracts | Fair Value, Measurements, Recurring | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / MWh | 67 | |
Power Contracts [Member] | Commodity contracts | Fair Value, Measurements, Recurring | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / MWh | 42 | |
Power Contracts [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | 1 | $ 1 |
Derivative Liability, Fair Value, Gross Liability | $ 0 | $ 0 |
Power Contracts [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / MWh | 26 | 22 |
Power Contracts [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / MWh | 71 | 67 |
Power Contracts [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / MWh | 43 | 42 |
Power Contracts [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Mid-Atlantic | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | $ 1 | $ 2 |
Derivative Liability, Fair Value, Gross Liability | $ 0 | $ 0 |
Power Contracts [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Mid-Atlantic | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / MWh | 0 | 22 |
Power Contracts [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Mid-Atlantic | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / MWh | 1 | 67 |
Power Contracts [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Mid-Atlantic | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / MWh | 0 | 42 |
Coal Contract [Member] | Commodity contracts | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | $ 0 | $ 0 |
Derivative Liability, Fair Value, Gross Liability | $ 13 | $ 12 |
Coal Contract [Member] | Commodity contracts | Fair Value, Measurements, Recurring | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / T | 28 | 28 |
Coal Contract [Member] | Commodity contracts | Fair Value, Measurements, Recurring | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / T | 38 | 45 |
Coal Contract [Member] | Commodity contracts | Fair Value, Measurements, Recurring | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / T | 33 | 35 |
Coal Contract [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | $ 13 | $ 12 |
Derivative Liability, Fair Value, Gross Liability | $ 14 | $ 12 |
Coal Contract [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / T | 28 | 28 |
Coal Contract [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / T | 38 | 45 |
Coal Contract [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Forward Price | $ / T | 33 | 35 |
Financial Transmission Rights [Member] | Commodity contracts | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | $ 3 | $ 1 |
Derivative Liability, Fair Value, Gross Liability | $ 1 | $ 2 |
Financial Transmission Rights [Member] | Commodity contracts | Fair Value, Measurements, Recurring | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Auction Price | $ / MWh | (2) | 0 |
Financial Transmission Rights [Member] | Commodity contracts | Fair Value, Measurements, Recurring | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Auction Price | $ / MWh | 3 | 3 |
Financial Transmission Rights [Member] | Commodity contracts | Fair Value, Measurements, Recurring | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Auction Price | $ / MWh | 0 | 1 |
Financial Transmission Rights [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Commodity contracts | $ 4 | $ 2 |
Derivative Liability, Fair Value, Gross Liability | $ 3 | $ 2 |
Financial Transmission Rights [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Auction Price | $ / MWh | (2) | 0 |
Financial Transmission Rights [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Auction Price | $ / MWh | 3 | 3 |
Financial Transmission Rights [Member] | Commodity contracts | Fair Value, Measurements, Recurring | GenOn Americas Generation | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Derivative, Auction Price | $ / MWh | 0 | 1 |
Fair Value of Financial Instr34
Fair Value of Financial Instruments (Details 5 - Credit Risk) - USD ($) $ in Millions | 6 Months Ended | ||
Jun. 30, 2016 | Dec. 31, 2015 | ||
Derivative fair value measurements | |||
Credit reserve balance | $ (1) | $ (1) | |
Concentration of credit risk | |||
Counterparty credit exposure | 241 | ||
Collateral held (cash and letters of credit) against counterparty credit exposure | 0 | ||
Counterparty credit exposure, net | $ 241 | ||
Counterparty credit exposure before collateral expected to roll off by the end of 2014 (as a percent) | 75.00% | ||
Net exposure (as a percent) | [1] | 100.00% | |
Fair Value Inputs, Counterparty Credit Risk | 10.00% | ||
Aggregate counterparty credit risk exposure for counterparties representing exposure above threshold percentage | $ 192 | ||
Investment grade | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 97.00% | |
External Credit Rating, Non Investment Grade [Member] | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 1.00% | |
External Credit Rating Not Rated [Member] | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1],[2] | 2.00% | |
Financial institutions | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 49.00% | |
Utilities, energy merchants, marketers and other | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 29.00% | |
ISOs | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 22.00% | |
GenOn Americas Generation | |||
Derivative fair value measurements | |||
Credit reserve balance | $ (1) | 0 | |
Concentration of credit risk | |||
Counterparty credit exposure | 205 | ||
Collateral held (cash and letters of credit) against counterparty credit exposure | 0 | ||
Counterparty credit exposure, net | $ 205 | ||
Counterparty credit exposure before collateral expected to roll off by the end of 2014 (as a percent) | 89.00% | ||
Net exposure (as a percent) | [1] | 100.00% | |
Aggregate counterparty credit risk exposure for counterparties representing exposure above threshold percentage | $ 192 | ||
GenOn Americas Generation | Investment grade | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 99.00% | |
GenOn Americas Generation | External Credit Rating, Non Investment Grade [Member] | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 1.00% | |
GenOn Americas Generation | External Credit Rating Not Rated [Member] | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1],[2] | 0.00% | |
GenOn Americas Generation | Financial institutions | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 57.00% | |
GenOn Americas Generation | Utilities, energy merchants, marketers and other | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 17.00% | |
GenOn Americas Generation | ISOs | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 26.00% | |
GenOn Mid-Atlantic | |||
Derivative fair value measurements | |||
Credit reserve balance | $ 1 | $ 4 | |
Concentration of credit risk | |||
Counterparty credit exposure | $ 0 | ||
Net exposure (as a percent) | [1] | 0.00% | |
Aggregate counterparty credit risk exposure for counterparties representing exposure above threshold percentage | $ 0 | ||
GenOn Mid-Atlantic | Investment grade | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 0.00% | |
GenOn Mid-Atlantic | External Credit Rating, Non Investment Grade [Member] | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 0.00% | |
GenOn Mid-Atlantic | External Credit Rating Not Rated [Member] | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1],[2] | 0.00% | |
GenOn Mid-Atlantic | Financial institutions | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 0.00% | |
GenOn Mid-Atlantic | Utilities, energy merchants, marketers and other | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 0.00% | |
GenOn Mid-Atlantic | ISOs | |||
Concentration of credit risk | |||
Net exposure (as a percent) | [1] | 0.00% | |
[1] | Counterparty credit exposure excludes uranium and coal transportation contracts because of the unavailability of market prices. | ||
[2] | For non-rated counterparties, a significant portion are related to ISO and municipal public power entities, which are considered investment grade equivalent ratings based on NRG's internal credit ratings. |
Accounting for Derivative Ins35
Accounting for Derivative Instruments and Hedging Activities Disclosure Accounting for Derivative Instruments and Hedging Activities (Details 1 - Underlying Derivative) T in Millions, MWh in Millions, MMBTU in Millions | 6 Months Ended | 12 Months Ended |
Jun. 30, 2016MWhMMBTUT | Dec. 31, 2015MWhMMBTUT | |
Long [Member] | Emissions [Member] | Short Ton [Member] | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Mass | 1 | 0 |
Long [Member] | Emissions [Member] | Short Ton [Member] | GenOn Americas Generation | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Mass | 1 | 0 |
Long [Member] | Emissions [Member] | Short Ton [Member] | GenOn Mid-Atlantic | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Mass | 1 | 0 |
Long [Member] | Coal | Short Ton [Member] | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Mass | 5 | 7 |
Long [Member] | Coal | Short Ton [Member] | GenOn Americas Generation | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Mass | 3 | 3 |
Long [Member] | Coal | Short Ton [Member] | GenOn Mid-Atlantic | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Mass | 3 | 3 |
Long [Member] | Natural Gas [Member] | MMbtu [Member] | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU | 175 | 191 |
Long [Member] | Natural Gas [Member] | MMbtu [Member] | GenOn Americas Generation | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU | 20 | 2 |
Long [Member] | Natural Gas [Member] | MMbtu [Member] | GenOn Mid-Atlantic | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU | 11 | |
Short [Member] | Natural Gas [Member] | MMbtu [Member] | GenOn Mid-Atlantic | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU | 10 | |
Short [Member] | Power [Member] | M Wh [Member] | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Energy Measure | MWh | 40 | 49 |
Short [Member] | Power [Member] | M Wh [Member] | GenOn Americas Generation | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Energy Measure | MWh | 15 | 20 |
Short [Member] | Power [Member] | M Wh [Member] | GenOn Mid-Atlantic | ||
Derivative | ||
Derivative, Nonmonetary Notional Amount, Energy Measure | MWh | 14 | 18 |
Accounting for Derivative Ins36
Accounting for Derivative Instruments and Hedging Activities Disclosure Accounting for Derivative Instruments and Hedging Activities (Details 2 - FV of Derivatives) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Millions | Jun. 30, 2016 | Dec. 31, 2015 |
Derivative | ||
Commodity contracts | $ 459 | $ 729 |
Derivative Liability, Fair Value, Gross Liability | 402 | 591 |
GenOn Americas Generation | ||
Derivative | ||
Commodity contracts | 691 | 1,096 |
Derivative Liability, Fair Value, Gross Liability | 658 | 919 |
GenOn Mid-Atlantic | ||
Derivative | ||
Commodity contracts | 190 | 352 |
Derivative Liability, Fair Value, Gross Liability | 150 | 195 |
Commodity Contract Current [Member] | ||
Derivative | ||
Commodity contracts | 320 | 574 |
Derivative Liability, Fair Value, Gross Liability | 309 | 475 |
Commodity Contract Current [Member] | GenOn Americas Generation | ||
Derivative | ||
Commodity contracts | 496 | 861 |
Derivative Liability, Fair Value, Gross Liability | 477 | 737 |
Commodity Contract Current [Member] | GenOn Mid-Atlantic | ||
Derivative | ||
Commodity contracts | 141 | 269 |
Derivative Liability, Fair Value, Gross Liability | 116 | 163 |
Commodity Contract Non Current [Member] | ||
Derivative | ||
Commodity contracts | 139 | 155 |
Derivative Liability, Fair Value, Gross Liability | 93 | 116 |
Commodity Contract Non Current [Member] | GenOn Americas Generation | ||
Derivative | ||
Commodity contracts | 195 | 235 |
Derivative Liability, Fair Value, Gross Liability | 181 | 182 |
Commodity Contract Non Current [Member] | GenOn Mid-Atlantic | ||
Derivative | ||
Commodity contracts | 49 | 83 |
Derivative Liability, Fair Value, Gross Liability | $ 34 | $ 32 |
Accounting for Derivative Ins37
Accounting for Derivative Instruments and Hedging Activities (Details 3 - Offsetting Derivatives) - USD ($) $ in Millions | Jun. 30, 2016 | Dec. 31, 2015 |
Fair Value of Derivative Instruments/Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid | ||
Cash Collateral (Held) | $ (43) | $ (51) |
Cash Collateral Posted | 75 | 48 |
Gross Amounts of Recognized Assets / Liabilities | 57 | 138 |
Derivative Instruments | 0 | 0 |
Cash Collateral (Held) / Posted | (42) | (51) |
Net Amount | 15 | 87 |
GenOn Americas Generation | ||
Fair Value of Derivative Instruments/Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid | ||
Cash Collateral (Held) | (43) | (51) |
Cash Collateral Posted | 73 | 39 |
Gross Amounts of Recognized Assets / Liabilities | 33 | 177 |
Derivative Instruments | 0 | 0 |
Cash Collateral (Held) / Posted | (41) | (51) |
Net Amount | (8) | 126 |
GenOn Mid-Atlantic | Commodity contracts | ||
Fair Value of Derivative Instruments/Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid | ||
Gross Amounts of Recognized Assets / Liabilities | 40 | 157 |
Derivative Instruments | 0 | 0 |
Cash Collateral (Held) / Posted | 0 | 0 |
Net Amount | 40 | 157 |
Non-affiliate | Commodity contracts | ||
Fair Value of Derivative Instruments/Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid | ||
Gross Amount of Recognized Derivative Assets | 449 | 698 |
Gross Amounts of Recognized Derivative Liabilities | (389) | (567) |
Derivative Instruments | (293) | (485) |
Derivative Instruments | 293 | 485 |
Cash Collateral (Held) | (53) | (51) |
Cash Collateral Posted | 8 | 0 |
Net Amount | 103 | 162 |
Net Amount | (88) | (82) |
Non-affiliate | GenOn Americas Generation | Commodity contracts | ||
Fair Value of Derivative Instruments/Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid | ||
Gross Amount of Recognized Derivative Assets | 449 | 699 |
Gross Amounts of Recognized Derivative Liabilities | (389) | (567) |
Derivative Instruments | (293) | (485) |
Derivative Instruments | 293 | 485 |
Cash Collateral (Held) | (53) | (51) |
Cash Collateral Posted | 8 | 0 |
Net Amount | 103 | 163 |
Net Amount | (88) | (82) |
Affiliate | Commodity contracts | ||
Fair Value of Derivative Instruments/Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid | ||
Gross Amount of Recognized Derivative Assets | 10 | 31 |
Gross Amounts of Recognized Derivative Liabilities | (13) | (24) |
Derivative Instruments | (10) | (24) |
Derivative Instruments | 10 | 24 |
Cash Collateral (Held) | 0 | 0 |
Cash Collateral Posted | 3 | 0 |
Net Amount | 0 | 7 |
Net Amount | 0 | 0 |
Affiliate | GenOn Americas Generation | Commodity contracts | ||
Fair Value of Derivative Instruments/Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid | ||
Gross Amount of Recognized Derivative Assets | 242 | 397 |
Gross Amounts of Recognized Derivative Liabilities | (269) | (352) |
Derivative Instruments | (229) | (352) |
Derivative Instruments | 229 | 352 |
Cash Collateral (Held) | 0 | 0 |
Cash Collateral Posted | 4 | 0 |
Net Amount | 13 | 45 |
Net Amount | (36) | 0 |
Affiliate | GenOn Mid-Atlantic | Commodity contracts | ||
Fair Value of Derivative Instruments/Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid | ||
Gross Amount of Recognized Derivative Assets | 190 | 352 |
Gross Amounts of Recognized Derivative Liabilities | (150) | (195) |
Derivative Instruments | (150) | (195) |
Derivative Instruments | 150 | 195 |
Cash Collateral (Held) | 0 | 0 |
Cash Collateral Posted | 0 | 0 |
Net Amount | 40 | 157 |
Net Amount | $ 0 | $ 0 |
Accounting for Derivative Ins38
Accounting for Derivative Instruments and Hedging Activities (Details 4 - Mark to market) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended | ||
Jul. 31, 2016 | Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | |
Unrealized mark-to-market results | |||||
Reversal of previously recognized unrealized gains on settled positions related to economic hedges | $ (46) | $ (41) | $ (116) | $ (127) | |
Net unrealized (losses)/gains on open positions related to economic hedges | (19) | 56 | 25 | (6) | |
Total impact to statement of operations | (65) | 15 | (91) | (133) | |
Impact of derivative instruments to statement of operations | |||||
Total impact to statement of operations | (65) | 15 | (91) | (133) | |
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value | 80 | 80 | |||
Credit Risk Related Contingent Features | |||||
Collateral required for contracts with adequate assurance clauses in net liability positions | 25 | 25 | |||
Collateral required for contracts with credit rating contingent features in net liability position | 0 | 0 | |||
Collateral due on net liability position that has not been called by a certain marginable agreement counterparty | 0 | 0 | |||
Realized Gain [Member] | |||||
Impact of derivative instruments to statement of operations | |||||
Derivative Instruments Not Designated as Hedging Instruments, Gain | $ 98 | 38 | |||
Gains (losses) included in operating revenues | |||||
Unrealized mark-to-market results | |||||
Total impact to statement of operations | (64) | 25 | (91) | (74) | |
Impact of derivative instruments to statement of operations | |||||
Total impact to statement of operations | (64) | 25 | (91) | (74) | |
Gains (losses) included in cost of operations | |||||
Unrealized mark-to-market results | |||||
Total impact to statement of operations | (1) | (10) | 0 | (59) | |
Impact of derivative instruments to statement of operations | |||||
Total impact to statement of operations | (1) | (10) | 0 | (59) | |
GenOn Americas Generation | |||||
Unrealized mark-to-market results | |||||
Reversal of previously recognized unrealized gains on settled positions related to economic hedges | (52) | (35) | (119) | (130) | |
Net unrealized (losses)/gains on open positions related to economic hedges | (42) | 33 | (29) | 11 | |
Total impact to statement of operations | (94) | (2) | (148) | (119) | |
Impact of derivative instruments to statement of operations | |||||
Total impact to statement of operations | (94) | (2) | (148) | (119) | |
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value | 40 | 40 | |||
Credit Risk Related Contingent Features | |||||
Collateral required for contracts with adequate assurance clauses in net liability positions | 25 | 25 | |||
Collateral required for contracts with credit rating contingent features in net liability position | 0 | 0 | |||
Collateral due on net liability position that has not been called by a certain marginable agreement counterparty | 0 | 0 | |||
GenOn Americas Generation | Realized Gain [Member] | |||||
Impact of derivative instruments to statement of operations | |||||
Derivative Instruments Not Designated as Hedging Instruments, Gain | 50 | 35 | |||
GenOn Americas Generation | Gains (losses) included in operating revenues | |||||
Unrealized mark-to-market results | |||||
Total impact to statement of operations | (97) | 6 | (153) | (80) | |
Impact of derivative instruments to statement of operations | |||||
Total impact to statement of operations | (97) | 6 | (153) | (80) | |
GenOn Americas Generation | Gains (losses) included in cost of operations | |||||
Unrealized mark-to-market results | |||||
Total impact to statement of operations | 3 | (8) | 5 | (39) | |
Impact of derivative instruments to statement of operations | |||||
Total impact to statement of operations | 3 | (8) | 5 | (39) | |
GenOn Mid-Atlantic | |||||
Unrealized mark-to-market results | |||||
Reversal of previously recognized unrealized gains on settled positions related to economic hedges | (47) | (32) | (99) | (59) | |
Net unrealized (losses)/gains on open positions related to economic hedges | (34) | 19 | (22) | (9) | |
Total impact to statement of operations | (81) | (13) | (121) | (68) | |
Impact of derivative instruments to statement of operations | |||||
Total impact to statement of operations | (81) | (13) | (121) | (68) | |
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value | 40 | 40 | |||
GenOn Mid-Atlantic | Realized Gain [Member] | |||||
Impact of derivative instruments to statement of operations | |||||
Derivative Instruments Not Designated as Hedging Instruments, Gain | $ 50 | 35 | |||
GenOn Mid-Atlantic | Gains (losses) included in operating revenues | |||||
Unrealized mark-to-market results | |||||
Total impact to statement of operations | (84) | (4) | (120) | (28) | |
Impact of derivative instruments to statement of operations | |||||
Total impact to statement of operations | (84) | (4) | (120) | (28) | |
GenOn Mid-Atlantic | Gains (losses) included in cost of operations | |||||
Unrealized mark-to-market results | |||||
Total impact to statement of operations | 3 | (9) | (1) | (40) | |
Impact of derivative instruments to statement of operations | |||||
Total impact to statement of operations | $ 3 | $ (9) | $ (1) | $ (40) |
Impairments (Details)
Impairments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | |
Impaired Long-Lived Assets Held and Used [Line Items] | ||||
Impairment of Long-Lived Assets Held-for-use | $ 59 | $ 0 | $ 59 | $ 0 |
Mandalay operating unit [Member] | ||||
Impaired Long-Lived Assets Held and Used [Line Items] | ||||
Impairment of Long-Lived Assets Held-for-use | 16 | |||
Ormond Beach operating unit [Member] | ||||
Impaired Long-Lived Assets Held and Used [Line Items] | ||||
Impairment of Long-Lived Assets Held-for-use | $ 43 |
Debt and Capital Leases (Detail
Debt and Capital Leases (Details) - USD ($) $ in Millions | Jun. 30, 2016 | Dec. 31, 2015 |
Debt Instrument [Line Items] | ||
Debt and Capital Lease Obligations | $ 2,737 | $ 2,766 |
Current portion of long-term debt and capital leases | 711 | 4 |
Long-term debt and capital leases | 2,026 | 2,762 |
Debt Instrument, Unamortized Discount (Premium), Net | 157 | 183 |
Capital Lease Obligations [Member] | ||
Debt Instrument [Line Items] | ||
Debt and Capital Lease Obligations | 2 | 2 |
Other Debt Obligations [Member] | ||
Debt Instrument [Line Items] | ||
Debt and Capital Lease Obligations | 53 | 56 |
Senior Notes [Member] | Senior Unsecured Notes 2017 [Member] | ||
Debt Instrument [Line Items] | ||
Debt and Capital Lease Obligations | $ 707 | 714 |
Debt Instrument, Interest Rate, Stated Percentage | 7.875% | |
Debt Instrument, Unamortized Discount (Premium), Net | $ (16) | (23) |
Senior Notes [Member] | Senior Unsecured Notes 2018 [Member] | ||
Debt Instrument [Line Items] | ||
Debt and Capital Lease Obligations | $ 698 | 708 |
Debt Instrument, Interest Rate, Stated Percentage | 9.50% | |
Debt Instrument, Unamortized Discount (Premium), Net | $ (48) | (59) |
Senior Notes [Member] | Senior Unsecured Notes 2020 [Member] | ||
Debt Instrument [Line Items] | ||
Debt and Capital Lease Obligations | $ 529 | 534 |
Debt Instrument, Interest Rate, Stated Percentage | 9.875% | |
Debt Instrument, Unamortized Discount (Premium), Net | $ (40) | (44) |
GenOn Americas Generation | ||
Debt Instrument [Line Items] | ||
Debt and Capital Lease Obligations | 748 | 752 |
Long-term debt and capital leases | 748 | 752 |
GenOn Americas Generation | Senior Notes [Member] | Senior Unsecured Notes 2021 [Member] | ||
Debt Instrument [Line Items] | ||
Debt and Capital Lease Obligations | $ 395 | 398 |
Debt Instrument, Interest Rate, Stated Percentage | 8.50% | |
Debt Instrument, Unamortized Discount (Premium), Net | $ (29) | (32) |
GenOn Americas Generation | Senior Notes [Member] | Senior Unsecured Notes 2031 [Member] | ||
Debt Instrument [Line Items] | ||
Debt and Capital Lease Obligations | $ 353 | 354 |
Debt Instrument, Interest Rate, Stated Percentage | 9.125% | |
Debt Instrument, Unamortized Discount (Premium), Net | $ (24) | (25) |
GenOn Energy [Member] | ||
Debt Instrument [Line Items] | ||
Debt and Capital Lease Obligations | $ 1,989 | $ 2,014 |
Income Taxes (Details)
Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | |||
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015 | |
Income tax provision | |||||
Loss before income taxes | $ (116) | $ (18) | $ (16) | $ (30) | |
Income tax benefit | $ 0 | $ 0 | $ (1) | $ (1) | |
Effective tax rate | 0.00% | 0.00% | 6.30% | 3.30% | |
Statutory tax rate (as a percent) | 35.00% | 35.00% | 35.00% | 35.00% | |
GenOn Americas Generation | |||||
Income tax provision | |||||
Loss before income taxes | $ (41) | $ (6) | $ 17 | $ (13) | |
Income tax benefit | 0 | 0 | 0 | 0 | |
GenOn Mid-Atlantic | |||||
Income tax provision | |||||
Loss before income taxes | (37) | 4 | 6 | 27 | |
Income tax benefit | 0 | 0 | 0 | 0 | |
Deferred Tax Assets, Valuation Allowance | 0 | 0 | $ 0 | ||
Pro Forma | GenOn Americas Generation | |||||
Income tax provision | |||||
Income tax benefit | 0 | 0 | 0 | 0 | |
Pro Forma | GenOn Mid-Atlantic | |||||
Income tax provision | |||||
Income tax benefit | 16 | $ 2 | 2 | $ 10 | |
Deferred income taxes | $ 54 | $ 54 | $ 56 |
Related Party Transactions (Det
Related Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended | ||
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2016 | |
GenOn Americas Generation | GenOn | |||||
Related Party Transaction | |||||
Affiliate cost recorded in cost of operations | $ 21 | $ 22 | $ 43 | $ 43 | |
GenOn Mid-Atlantic | GenOn | |||||
Related Party Transaction | |||||
Affiliate cost recorded in cost of operations | 16 | 15 | 32 | 30 | |
Allocated cost of operations [Member] | GenOn Americas Generation | GenOn | |||||
Related Party Transaction | |||||
Affiliate cost recorded in cost of operations | 1 | 2 | 2 | 2 | |
Allocated cost of operations [Member] | GenOn Mid-Atlantic | GenOn | |||||
Related Party Transaction | |||||
Affiliate cost recorded in cost of operations | 1 | 1 | 2 | 1 | |
Direct cost of operations | GenOn | |||||
Related Party Transaction | |||||
Affiliate cost recorded in cost of operations | 47 | 48 | 93 | 97 | |
Allocated Selling, General and Administrative [Member] | GenOn Americas Generation | GenOn | |||||
Related Party Transaction | |||||
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party | 20 | 20 | 41 | 41 | |
Allocated Selling, General and Administrative [Member] | GenOn Mid-Atlantic | GenOn | |||||
Related Party Transaction | |||||
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party | $ 15 | $ 14 | $ 30 | $ 29 | |
Scenario, Plan [Member] | NRG Energy | |||||
Related Party Transaction | |||||
Service Management Costs | $ 193 |
Related Party Transactions Rela
Related Party Transactions Related Party Transactions (Details 2) - USD ($) $ in Millions | 6 Months Ended | |||
Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015 | Dec. 14, 2012 | |
GenOn Americas Generation | GenOn Energy Holdings [Member] | ||||
Related Party Transaction | ||||
Notes Receivable, Related Parties, Current | $ 331 | $ 331 | ||
Due from Affiliate, Current | 30 | 41 | ||
Interest Income, Related Party | 0 | $ 0 | ||
Intercompany Credit Agreement [Member] | ||||
Related Party Transaction | ||||
Line of Credit Facility, Maximum Borrowing Capacity | $ 500 | |||
Long-term Line of Credit | 0 | 0 | ||
Letter of Credit [Member] | Intercompany Credit Agreement [Member] | NRG Energy | ||||
Related Party Transaction | ||||
Letters of Credit Outstanding, Amount | $ 281 | 278 | ||
Debt Instrument, Basis Spread on Variable Rate | 2.50% | |||
Debt Instrument, Basis Spread on Libor Rate | 3.50% | |||
Letter of Credit [Member] | Intercompany Credit Agreement [Member] | GenOn Americas Generation | NRG Energy | ||||
Related Party Transaction | ||||
Letters of Credit Outstanding, Amount | $ 204 | 227 | ||
Letter of Credit [Member] | Intercompany Credit Agreement [Member] | GenOn Mid-Atlantic | NRG Energy | ||||
Related Party Transaction | ||||
Letters of Credit Outstanding, Amount | $ 129 | $ 131 |
Commitments and Contingencies (
Commitments and Contingencies (Details) - USD ($) $ in Millions | 6 Months Ended | |||
Jun. 30, 2016 | Mar. 31, 2014 | Dec. 14, 2012 | Dec. 02, 2010 | |
MD Department of Environment v. Chalk Point [Member] | ||||
Maryland Department of the Environment v. GenOn Chalk Point and GenOn Mid-Atlantic | ||||
Environmental Projects | $ 1 | |||
Civil Penalties | $ 1 | |||
Chapter Eleven Proceedings | Bankruptcy | ||||
Chapter Eleven Proceedings | ||||
GenOn Energy Holdings common stock shares reserved for unresolved claims | 461,000 | |||
Number of reserved shares for disputed Chapter 11 claims converted into reserved of GenOn common stock | 1,300,000 | |||
Number of reserved shares for disputed Chapter 11 claims converted into reserved of NRG common stock | 159,000 |
Environmental Matters (Details)
Environmental Matters (Details) $ in Millions | Jun. 30, 2016USD ($) |
Environmental Matters Disclosure | |
Estimated environmental capital expenditures from 2013 through 2017 | $ 61 |
GenOn Americas Generation | |
Environmental Matters Disclosure | |
Estimated environmental capital expenditures from 2013 through 2017 | 13 |
GenOn Mid-Atlantic | |
Environmental Matters Disclosure | |
Estimated environmental capital expenditures from 2013 through 2017 | $ 9 |