Estimated Mandatory Prepayments Due Within One Year

No definition available.

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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.

+ References

No definition available.

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- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

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Long-Term Debt (Based on Stated Maturity Dates Rather than Early Redemption Dates that Could be Elected by Instrument Holders) (Parenthetical) (Detail) - USD ($) $ in Millions	1 Months Ended		2 Months Ended	12 Months Ended
	Feb. 28, 2019	Feb. 28, 2018	May 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Repayment of Debt				$ 5,682.0	$ 1,572.0	$ 1,610.0
Term Loans
Debt Instrument [Line Items]
Estimated mandatory prepayments due within one year				$ 20.0
Dominion Energy Midstream Partners, LP
Debt Instrument [Line Items]
Repayment of Debt		$ 250.0
Repayment of outstanding credit facility balance	$ 73.0		$ 73.0
Variable Rate Term Loan \| Dominion Energy Midstream Partners, LP
Debt Instrument [Line Items]
Repayment of Debt	$ 300.0