CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents		$ 73
Accounts receivable, net		429	$ 392
Accounts receivable from affiliates		29	32
Investments in money pool arrangements		91	0
Accrued unbilled revenues		319	248
Inventories		309	295
Regulatory assets		527	411
Derivative instruments		53	17
Prepayments and other		46	50
Total current assets		1,876	1,491
Property, plant and equipment, net		16,430	15,308
Other assets
Nuclear decommissioning fund and other investments		3,308	2,830
Regulatory assets		718	924
Derivative instruments		33	5
Operating lease right-of-use assets		408	488
Other		36	14
Total other assets		4,503	4,261
Total assets		22,809	21,060
Current liabilities
Current portion of long-term debt		300	0
Short-term debt		0	179
Accounts payable		522	438
Accounts payable to affiliates		63	66
Regulatory liabilities	[1]	117	123
Taxes accrued		260	263
Accrued interest		78	72
Dividends payable to parent		96	106
Derivative instruments		35	22
Operating lease liabilities		90	85
Other		166	154
Total current liabilities		1,727	1,508
Deferred credits and other liabilities
Deferred income taxes		1,949	1,840
Deferred investment tax credits		17	18
Regulatory liabilities	[1]	1,927	1,896
Asset retirement obligations		2,585	2,350
Derivative instruments		71	71
Pension and employee benefit obligations		112	192
Operating lease liabilities		353	443
Other		48	69
Total deferred credits and other liabilities		7,062	6,879
Commitments and contingencies
Capitalization
Long-term debt		6,447	5,904
Common Stock, Value, Issued		$ 0	$ 0
Common Stock, Shares Authorized		5,000,000	5,000,000
Common Stock, Par or Stated Value Per Share		$ 0.01	$ 0.01
Common stock outstanding (shares)		1,000,000	1,000,000
Additional paid in capital		$ 5,202	$ 4,585
Retained earnings		2,391	2,206
Accumulated other comprehensive loss		(20)	(22)
Total common stockholder's equity		7,573	6,769
Total liabilities and equity		$ 22,809	$ 21,060

[1] Revenue subject to refund of $15 million and $17 million for 2021 and 2020, respectively, is included in other current liabilities.