Segment financial information (Tables)

6 Months Ended

Jun. 30, 2024

Segment Reporting [Abstract]

Schedule of Segment Financial Information

(in thousands)	Electric utility		Bank		Other		Total
Three months ended June 30, 2024
Revenues	$	792,331	$	101,943	$	3,086	$	897,360
Income (loss) before income taxes	$	(1,658,653)	$	(57,106)	$	(26,521)	$	(1,742,280)
Income taxes (benefit)	(429,758)		(11,319)		(6,192)		(447,269)
Net income (loss)	(1,228,895)		(45,787)		(20,329)		(1,295,011)
Preferred stock dividends of subsidiaries	499		—		(26)		473
Net income (loss) for common stock	$	(1,229,394)	$	(45,787)	$	(20,303)	$	(1,295,484)
Six months ended June 30, 2024
Revenues	$	1,580,909	$	207,087	$	6,522	$	1,794,518
Income (loss) before income taxes	$	(1,607,753)	$	(31,293)	$	(48,965)	$	(1,688,011)
Income taxes (benefit)	(418,578)		(6,440)		(10,577)		(435,595)
Net income (loss)	(1,189,175)		(24,853)		(38,388)		(1,252,416)
Preferred stock dividends of subsidiaries	998		—		(52)		946
Net income (loss) for common stock	$	(1,190,173)	$	(24,853)	$	(38,336)	$	(1,253,362)
Total assets (at June 30, 2024)	$	7,398,898	$	9,280,805	$	375,711	$	17,055,414
Three months ended June 30, 2023
Revenues	$	794,191	$	96,885	$	4,609	$	895,685
Income (loss) before income taxes	$	58,868	$	25,055	$	(14,556)	$	69,367
Income taxes (benefit)	13,070		4,851		(3,637)		14,284
Net income (loss)	45,798		20,204		(10,919)		55,083
Preferred stock dividends of subsidiaries	499		—		(26)		473
Net income (loss) for common stock	$	45,299	$	20,204	$	(10,893)	$	54,610
Six months ended June 30, 2023
Revenues	$	1,624,552	$	190,742	$	8,628	$	1,823,922
Income (loss) before income taxes	$	119,976	$	48,762	$	(29,067)	$	139,671
Income taxes (benefit)	26,670		9,996		(7,272)		29,394
Net income (loss)	93,306		38,766		(21,795)		110,277
Preferred stock dividends of subsidiaries	998		—		(52)		946
Net income (loss) for common stock	$	92,308	$	38,766	$	(21,743)	$	109,331
Total assets (at December 31, 2023)	$	7,283,554	$	9,673,192	$	287,075	$	17,243,821