Acquisitions, Investments and Dispositions - Texas Solar 7 (Details) - Texas Solar 7 - Texas $ in Millions	1 Months Ended	12 Months Ended
Jan. 31, 2016 USD ($) MW	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Percentage of voting interest acquired	100.00%
Generating capacity (MW AC) \| MW	106
Payments to acquire business	$ 227
Non-utility construction work in progress	218
Receivable from parent company	$ 9
Net assets		$ 127
Intangible assets		$ 41

Generating Capacity

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Amount of net assets (liabilities).

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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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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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