CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 28
Accounts receivable, net	342	$ 304
Accounts receivable from affiliates	8	53
Accrued unbilled revenues	298	294
Inventories	189	192
Regulatory assets	121	64
Derivative instruments	21	7
Prepayments and other	82	56
Total current assets	1,089	981
Property, plant and equipment, net	17,470	16,155
Other assets
Regulatory assets	1,059	1,038
Derivative instruments	16	0
Operating lease right-of-use assets	500	574
Other	231	260
Total other assets	1,806	1,872
Total assets	20,365	19,008
Current liabilities
Current portion of long-term debt	0	400
Borrowings under utility money pool arrangement	57	39
Short-term debt	136	0
Accounts payable	452	573
Accounts payable to affiliates	58	44
Regulatory liabilities	100	69
Taxes accrued	251	202
Accrued interest	61	53
Dividends payable to parent	105	112
Derivative instruments	27	9
Operating lease liabilities	97	86
Other	84	99
Total current liabilities	1,428	1,686
Deferred credits and other liabilities
Deferred income taxes	1,897	1,851
Deferred investment tax credits	20	23
Regulatory liabilities	2,337	2,037
Asset retirement obligations	399	324
Derivative instruments	51	53
Customer advances	168	173
Pension and employee benefit obligations	161	212
Operating lease liabilities	432	518
Other	156	150
Total deferred credits and other liabilities	5,621	5,341
Commitments and contingencies
Capitalization
Long-term debt	5,724	4,985
Common stock — 100 shares authorized of $0.01 par value; 100 shares outstanding at Dec. 31, 2020 and Dec. 31, 2019, respectively	$ 0	$ 0
Common Stock, Shares Authorized	100	100
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares, Outstanding	100	100
Additional paid in capital	$ 5,770	$ 4,940
Retained earnings	1,846	2,083
Accumulated other comprehensive loss	(24)	(27)
Total common stockholder's equity	7,592	6,996
Total liabilities and stockholder's equity	$ 20,365	$ 19,008