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Leases (Tables) | 9 Months Ended
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Sep. 30, 2019
Leases [Abstract] |
Lease, Cost and Other Information | Lease Cost:
(In millions) | Three months ended September 30, 2019 |  | Nine months ended September 30, 2019
Operating lease cost | $ | 26 |  |  | $ | 82 |
Short-term lease cost | 1 |  |  | 2 |
Variable lease cost | 1 |  |  | 4 |
Sublease income | (4) |  |  | (13) |
Total lease cost | $ | 24 |  |  | $ | 75 |
Other information:
(In millions) | Nine months ended September 30, 2019
Cash paid for amounts included in the measurement of lease liabilities: |  |
Operating cash flows from operating leases | $ | 77 |
Right-of-use assets obtained in exchange for new operating lease liabilities | 215 |
Lease Term and Discount Rate for operating leases:
| September 30, 2019
Weighted average remaining lease term (in years) | 7.9
Weighted average discount rate | 5.74 | %
Schedule of Annual Payments Based on Maturities of Leases | As of September 30, 2019, annual payments based on the maturities of NRG's leases are expected to be as follows:
| (In millions)
Remainder of 2019 | $ | 26 |
2020 | 94 |
2021 | 86 |
2022 | 86 |
2023 | 86 |
Thereafter | 372 |
Total undiscounted lease payments | $ | 750 |
Less: present value adjustment | (177) |
Total discounted lease payments | $ | 573 |

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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