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- Definition

Disposal Group, Including Discontinued Operation, Ownership Percentage

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Lease And Easement Agreement, Number Of Extensions

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- Definition

The generation capacity of the entity's power generation facilities as of the balance sheet date, expressed in megawatts.

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- Definition

Percent, after disposal, of ownership interest of a discontinued operation in which an equity method investment is retained.

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- Definition

Percent, prior to disposal, of ownership interest of a discontinued operation in which an equity method investment is retained.

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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No definition available.

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- Definition

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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- Definition

Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

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No definition available.

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Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

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Acquisitions, Discontinued Operations and Dispositions - Discontinued Operations (Details) $ in Millions			3 Months Ended								12 Months Ended
	Aug. 31, 2018 USD ($)	Feb. 06, 2018 USD ($) extension	Dec. 31, 2018 USD ($) MW	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) MW	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Generation capacity (in MW) \| MW			23,000								23,000
Other non-current liabilities			$ 718				$ 534				$ 718	$ 534
Loss from discontinued operations			$ (80)	$ 336	$ (69)	$ 5	$ 265	$ 0	$ 702	$ 25	$ 192	992	$ (65)
NRG Yield Inc. And Zephyr Renewables \| Agua Caliente Solar Project
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest prior to disposal	5100.00%
Remaining ownership interest	3500.00%
Gain on sale of equity interest	$ 8
Discontinued Operations \| South Central Portfolio
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Generation capacity (in MW) \| MW			1,263								1,263
Loss from discontinued operations											$ (66)	(87)	(72)
Discontinued Operations \| NRG Yield Inc. And Zephyr Renewables
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration	1,348
Commitment and advisory fees	50
Discontinued Operations \| NRG Yield Inc. And Zephyr Renewables \| Scenario, Adjustment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other non-current liabilities	$ (153)
Loss from discontinued operations		$ 153
Discontinued Operations \| Carlsbad Energy Holdings LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration		387
Other commitment		$ 23
Loss from discontinued operations											$ 292	$ 290	$ 99
Membership percentage		100.00%
Lease and easement agreement, number of extensions \| extension		2
Renewal term		10 years