CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 14.6	$ 11.4
Accounts receivable, net	314.9	303.9
Accounts receivable from affiliates	0.7	52.7
Accrued unbilled revenues	217.7	293.9
Inventories	153.5	192.0
Regulatory assets	76.1	64.0
Derivative instruments	5.0	7.2
Prepayments and other	51.4	55.9
Total current assets	833.9	981.0
Property, plant and equipment, net	16,629.6	16,155.0
Other assets
Regulatory assets	1,038.8	1,038.1
Operating lease right-of-use assets	553.4	574.0
Other	257.9	259.4
Total other assets	1,850.1	1,871.5
Total assets	19,313.6	19,007.5
Current liabilities
Current portion of long-term debt	400.0	400.0
Borrowings under utility money pool arrangement	196.0	39.0
Accounts payable	374.2	573.3
Accounts payable to affiliates	49.9	43.9
Regulatory liabilities	104.3	69.2
Taxes accrued	268.0	202.1
Accrued interest	35.3	53.4
Dividends payable to parent	102.5	111.5
Derivative instruments	8.7	8.7
Operating lease liabilities	86.9	85.8
Other	82.6	98.8
Total current liabilities	1,708.4	1,685.7
Deferred credits and other liabilities
Deferred income taxes	1,867.8	1,850.8
Deferred investment tax credits	22.2	22.8
Regulatory liabilities	2,302.7	2,036.8
Asset retirement obligations	327.6	324.0
Derivative instruments	48.2	52.5
Customer advances	173.0	173.6
Pension and employee benefit obligations	163.1	211.9
Operating lease liabilities	495.6	517.6
Other	147.3	150.9
Total deferred credits and other liabilities	5,547.5	5,340.9
Capitalization
Long-term debt	4,985.7	4,984.7
Common stock — 100 shares authorized at $0.01 par value; 100 shares outstanding at March 31, 2020 and Dec. 31, 2019, respectively	0.0	0.0
Additional paid in capital	4,989.4	4,939.4
Retained earnings	2,108.9	2,083.4
Accumulated other comprehensive loss	(26.3)	(26.6)
Total common stockholder’s equity	7,072.0	6,996.2
Total liabilities and equity	$ 19,313.6	$ 19,007.5