CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2024	Sep. 30, 2024
ASSETS
Property, plant and equipment	$ 26,675,943	$ 25,848,083
Less accumulated depreciation and amortization	3,713,900	3,643,716
Net property, plant and equipment	22,962,043	22,204,367
Current assets
Cash and cash equivalents	584,536	307,340
Restricted cash and cash equivalents	4,870	1,516
Cash and cash equivalents and restricted cash and cash equivalents	589,406	308,856
Accounts receivable, net	628,871	365,882
Gas stored underground	153,034	169,508
Other current assets	456,816	288,068
Total current assets	1,828,127	1,132,314
Securitized intangible asset, net (See Note 9)	80,580	82,844
Goodwill	731,257	731,257
Deferred charges and other assets	895,086	1,043,683
Total assets	26,497,093	25,194,465
Shareholders’ equity
Common stock, no par value (stated at $0.005 per share); 200,000,000 shares authorized; issued and outstanding: December 31, 2024 — 158,726,065 shares; September 30, 2024 — 155,258,845 shares	794	776
Additional paid-in capital	7,864,525	7,474,559
Accumulated other comprehensive income	482,138	465,715
Retained earnings	4,433,024	4,216,619
Shareholders’ equity	12,780,481	12,157,669
Long-term debt, net	8,413,374	7,783,646
Securitized long-term debt (See Note 9)	76,871	76,871
Total capitalization	21,270,726	20,018,186
Current liabilities
Accounts payable and accrued liabilities	453,045	445,397
Other current liabilities	701,915	750,620
Current maturities of long-term debt	11,681	1,651
Current maturities of securitized long-term debt (See Note 9)	8,207	8,207
Total current liabilities	1,174,848	1,205,875
Deferred income taxes	2,674,678	2,593,342
Regulatory excess deferred taxes	173,001	177,315
Regulatory cost of removal obligation	520,190	507,815
Deferred credits and other liabilities	683,650	691,932
Total capitalization and liabilities	$ 26,497,093	$ 25,194,465