Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Cash flows from operating activities
Net income (loss), including loss from discontinued operations in 2024	$ 84,920	$ (1,356,347)
Adjustments to reconcile net income (loss) to net cash provided by operating activities - continuing operations
Loss from discontinued operations	0	6,075
Depreciation of property, plant and equipment	195,891	196,894
Other amortization	30,732	23,251
Loss on sale of subsidiaries and impairment loss on assets sold and held for sale	12,376	0
Deferred income tax benefit	(13,333)	(498,131)
Share-based compensation expense	2,922	2,163
Allowance for equity funds used during construction	(11,108)	(10,276)
Assets impairment	0	39,642
Other	(4,528)	(7,984)
Changes in assets and liabilities
Decrease (increase) in accounts receivable and unbilled revenues, net	(54,014)	49,063
Decrease (increase) in fuel oil stock	(13,200)	38,152
Decrease (increase) in materials and supplies	(14,412)	440
Decrease (increase) in regulatory assets	2,839	(13,263)
Increase in regulatory liabilities	65,674	33,461
Increase in accounts, interest and dividends payable	3,372	66,049
Change in prepaid and accrued income taxes, tax credits and utility revenue taxes	(15,761)	(33,217)
Decrease in defined benefit pension and other postretirement benefit plans liability	(4,263)	(5,949)
Increase in wildfire-related claims	47,750	1,840,000
Change in other assets and liabilities	(31,189)	(67,560)
Net cash provided by operating activities-continuing operations	284,668	302,463
Net cash provided by operating activities-discontinued operations	0	48,448
Net cash provided by operating activities	284,668	350,911
Cash flows from investing activities
Proceeds from sale of subsidiaries	13,781	0
Capital expenditures	(255,450)	(256,920)
Other	4,316	1,808
Net cash used in investing activities-continuing operations	(237,353)	(255,112)
Net cash provided by investing activities-discontinued operations	0	231,052
Net cash used in investing activities	(237,353)	(24,060)
Cash flows from financing activities
Repayment of short-term debt	(50,000)	0
Proceeds from issuance of long-term debt	500,000	5,204
Repayment of long-term debt	(694,475)	(12,865)
Withheld shares for employee taxes on vested share-based compensation	(178)	(1,074)
Net proceeds from issuance of common stock	0	556,724
Preferred stock dividends of subsidiaries	(1,417)	(1,417)
Other	(16,887)	(12,415)
Net cash provided by (used in) financing activities-continuing operations	(262,957)	534,157
Net cash used in financing activities-discontinued operations	0	(382,302)
Net cash provided by (used in) financing activities	(262,957)	151,855
Net increase (decrease) in cash, cash equivalents and restricted cash, including cash from discontinued operations	(215,642)	478,706
Cash, cash equivalents and restricted cash, including cash from discontinued operations, beginning of period	1,242,852	694,574
Cash, cash equivalents and restricted cash, including cash from discontinued operations, end of period	1,027,210	1,173,280
Less: Restricted cash	(478,968)	(13,645)
Less: Cash from discontinued operations	0	(332,653)
Cash and cash equivalents from continuing operations, end of period	$ 548,242	$ 826,982