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Property, Plant and Equipment (Narrative) (Detail) $ in Millions | 1 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2020 USD ($) | Jun. 30, 2020 USD ($) MW
Wexpro | Natural Gas Gathering Systems | Colorado, Utah and Wyoming |  |
Property Plant And Equipment [Line Items] |  |
Payments to acquire existing natural gas gathering systems | $ 38 |
Acquisition of Solar Project at Schools in Virginia |  |
Property Plant And Equipment [Line Items] |  |
Anticipated projected cost |  | $ 35
Aggregate generation capacity | MW |  | 18

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- Definition The cash outflow to purchase long lived physical asset use for the normal oil and gas operations and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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