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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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- Definition

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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- Definition

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

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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No definition available.

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- Definition

The distributions of earnings to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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- Definition

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

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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- Definition

Amount of transactions with related party during the financial reporting period.

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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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- Definition

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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Acquisitions, Investments and Dispositions (Details) $ in Millions	1 Months Ended			12 Months Ended
	Jun. 30, 2016 USD ($)	May 31, 2016 USD ($)	Jan. 31, 2016 USD ($) MW	Dec. 31, 2018 USD ($)	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Ownership interest, percentage					45.70%
Mountain Valley Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Equity method ownership (percent)			12.50%
Payments to acquire equity method investments			$ 18
Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Equity method ownership (percent)	50.00%
Payments to acquire equity method investments	$ 945
Texas Solar 7 \| Texas
Schedule of Equity Method Investments [Line Items]
Generating capacity \| MW			106
Payments to acquire business			$ 227
Non-utility construction work in progress			218
Other receivables			9
Electric \| Texas Solar 7 \| Texas
Schedule of Equity Method Investments [Line Items]
Consideration transferred			$ 375
Scenario, Forecast \| Gas \| Minimum \| Mountain Valley Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments				$ 3,000
Scenario, Forecast \| Gas \| Maximum \| Mountain Valley Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments				$ 3,500
CET Electric
Schedule of Equity Method Investments [Line Items]
Ownership interest, percentage		45.70%	45.70%
TOTS Project \| NY Transco \| CET Electric
Schedule of Equity Method Investments [Line Items]
Contributions to affiliates		$ 48
Purchase Price of TOTS Project Transfer \| NY Transco \| CET Electric
Schedule of Equity Method Investments [Line Items]
Related party transaction, amount of transaction		122
Lease Payments \| NY Transco \| CET Electric
Schedule of Equity Method Investments [Line Items]
Expenses from transactions with related party		$ 8