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Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of Checks Outstanding but Not Yet Presented for Payment

The following table illustrates the checks outstanding but not yet presented for payment and recorded in accounts payable for the Companies:

At December 31,		2019				2018
(millions)
Dominion Energy		$	29			$	35
Virginia Power			9				16
Dominion Energy Gas			6				7

Reconciliation of Total Cash, Restricted Cash and Equivalents

The following table provides a reconciliation of the total cash, restricted cash and equivalents reported within the Companies’ Consolidated Balance Sheets to the corresponding amounts reported within the Companies’ Consolidated Statements of Cash Flows for the years ended December 31, 2019, 2018 and 2017:

		Cash, Restricted Cash and Equivalents at End/Beginning of Year
		December 31, 2019				December 31, 2018				December 31, 2017				December 31, 2016
(millions)
Dominion Energy
Cash and cash equivalents			$166				$268				$120				$261
Restricted cash and equivalents(1)			103				123				65				61
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows			$269				$391				$185				$322
Virginia Power
Cash and cash equivalents			$  17				$  29				$  14				$  11
Restricted cash and equivalents(1)			7				9				10				—
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows			$  24				$  38				$  24				$  11
Dominion Energy Gas
Cash and cash equivalents(2)			$  27				$108				$  18				$  76
Restricted cash and equivalents(1)			12				90				39				45
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows			$  39				$198				$  57				$121

(1) Restricted cash and equivalent balances are presented within other current assets in the Companies’ Consolidated Balance Sheets.

(2) At December 31, 2018, 2017 and 2016, Dominion Energy Gas had $9 million, $3 million and $14 million of cash and cash equivalents included in current assets of discontinued operations, respectively.

Schedule of Depreciation Rates

The Companies’ average composite depreciation rates on utility property, plant and equipment are as follows:

Year Ended December 31,		2019				2018				2017
(percent)
Dominion Energy
Generation			2.84				2.71				2.94
Transmission			2.47				2.54				2.55
Distribution			2.80				2.97				3.00
Storage			2.40				2.40				2.48
General and other			4.04				4.20				4.38
Virginia Power
Generation			2.94				2.71				2.94
Transmission			2.54				2.52				2.54
Distribution			3.14				3.31				3.32
General and other			4.40				4.52				4.68
Dominion Energy Gas(1)
Transmission			2.43				2.66				2.67
Storage			2.53				2.42				2.51
General and other			4.59				4.18				5.08

(1) Excludes rates for depreciation reported as discontinued operations.

Property, Plant and Equipment

Dominion Energy’s nonutility property, plant and equipment is depreciated using the straight-line method over the following estimated useful lives:

Asset		Estimated Useful Lives
Merchant generation-nuclear			44 years
Merchant generation-other			15-30 years
Nonutility gas gathering and processing			3-50 years
LNG facility			40 years
General and other			5-59 years

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Tabular disclosure of the (a) carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business (accounts payable); (b) other payables; and (c) accrued liabilities. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). An alternative caption includes accrued expenses.

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Tabular disclosure of public utility physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, deprecation expense and method used, including composite depreciation, and accumulated deprecation.

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