Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 624.8	$ 86.6
Restricted cash and equivalents	6.9	6.4
Accounts receivable, net	221.5	350.3
Materials, supplies and fuel	134.8	160.9
Income tax receivable, net	19.8	18.5
Regulatory assets, current	142.9	175.7
Other current assets	22.9	28.2
Total current assets	1,173.6	826.6
Property, plant and equipment	9,238.1	8,917.2
Less accumulated depreciation	(1,882.6)	(1,797.9)
Total property, plant and equipment, net	7,355.5	7,119.3
Other assets:
Goodwill	1,299.5	1,299.5
Intangible assets, net	8.1	8.4
Regulatory assets, non-current	281.9	304.4
Other assets, non-current	67.3	62.2
Total other assets, non-current	1,656.8	1,674.5
TOTAL ASSETS	10,185.9	9,620.4
Current liabilities:
Accounts payable	155.2	186.4
Accrued liabilities	259.6	293.3
Derivative liabilities, current	1.7	6.5
Regulatory liabilities, current	90.3	98.9
Notes payable	0.0	0.0
Current maturities of long-term debt	600.0	600.0
Total current liabilities	1,106.8	1,185.1
Long-term debt, net of current maturities	4,247.1	3,801.2
Deferred credits and other liabilities:
Deferred income tax liabilities, net	598.5	548.0
Regulatory liabilities, non-current	467.1	467.7
Benefit plan liabilities	122.0	123.9
Other deferred credits and other liabilities	201.0	188.7
Total deferred credits and other liabilities	1,388.6	1,328.3
Commitments, contingencies and guarantees (Note 3)
Equity:
Common stock $1 par value; 100,000,000 shares authorized; issued 69,747,220 and 68,265,042 shares, respectively	69.7	68.3
Additional paid-in capital	2,084.2	2,007.7
Retained earnings	1,219.6	1,158.2
Treasury stock, at cost - 83,160 and 68,073 shares, respectively	(4.9)	(4.1)
Accumulated other comprehensive income (loss)	(11.3)	(14.8)
Total stockholders’ equity	3,357.3	3,215.3
Non-controlling interest	86.1	90.5
Total equity	3,443.4	3,305.8
TOTAL LIABILITIES AND TOTAL EQUITY	$ 10,185.9	$ 9,620.4