CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Regulated operations plant:
Gas plant	$ 11,166,691	$ 10,789,690
Less: accumulated depreciation	(3,536,274)	(3,397,736)
Construction work in progress	273,662	202,068
Net regulated operations plant	7,904,079	7,594,022
Other property and investments, net	1,311,334	1,316,479
Current assets:
Cash and cash equivalents	175,272	222,697
Accounts receivable, net of allowance	779,558	707,127
Accrued utility revenue	41,300	84,900
Income taxes receivable, net	15,580	16,816
Deferred purchased gas costs	381,351	291,145
Prepaid and other current assets	316,578	292,082
Total current assets	1,709,639	1,614,767
Noncurrent assets:
Goodwill	1,742,967	1,781,332
Deferred income taxes	322	121
Deferred charges and other assets	434,236	458,536
Total noncurrent assets	2,177,525	2,239,989
Total assets	13,102,577	12,765,257
Capitalization:
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 67,063,730 and 60,422,081 shares)	68,694	62,052
Additional paid-in capital	2,283,250	1,824,216
Accumulated other comprehensive loss, net	(50,232)	(46,761)
Retained earnings	1,111,203	1,114,313
Total equity	3,412,915	2,953,820
Redeemable noncontrolling interests	114,692	196,717
Long-term debt, less current maturities	5,865,591	4,115,684
Total capitalization	9,393,198	7,266,221
Current liabilities:
Current maturities of long-term debt	41,485	297,324
Short-term debt	381,000	1,909,000
Accounts payable	308,824	353,365
Customer deposits	55,033	59,327
Income taxes payable, net	4,516	6,734
Accrued general taxes	72,941	53,473
Accrued interest	41,484	30,964
Deferred purchased gas costs	3,742	5,736
Other current liabilities	404,703	396,126
Total current liabilities	1,313,728	3,112,049
Deferred income taxes and other credits:
Deferred income taxes and investment tax credits, net	774,465	768,868
Accumulated removal costs	500,052	480,583
Other deferred credits and other long-term liabilities	1,121,134	1,137,536
Total deferred income taxes and other credits	2,395,651	2,386,987
Total capitalization and liabilities	$ 13,102,577	$ 12,765,257