CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2025	Sep. 30, 2024
ASSETS
Property, plant and equipment	$ 27,451,302	$ 25,848,083
Less accumulated depreciation and amortization	3,819,079	3,643,716
Net property, plant and equipment	23,632,223	22,204,367
Current assets
Cash and cash equivalents	543,504	307,340
Restricted cash and cash equivalents	1,616	1,516
Cash and cash equivalents and restricted cash and cash equivalents	545,120	308,856
Accounts receivable, net	660,634	365,882
Gas stored underground	97,254	169,508
Other current assets	288,275	288,068
Total current assets	1,591,283	1,132,314
Securitized intangible asset, net (See Note 9)	78,892	82,844
Goodwill	731,257	731,257
Deferred charges and other assets	946,726	1,043,683
Total assets	26,980,381	25,194,465
Shareholders’ equity
Common stock, no par value (stated at $0.005 per share); 200,000,000 shares authorized; issued and outstanding: March 31, 2025 — 158,835,123 shares; September 30, 2024 — 155,258,845 shares	794	776
Additional paid-in capital	7,880,436	7,474,559
Accumulated other comprehensive income	476,551	465,715
Retained earnings	4,780,184	4,216,619
Shareholders’ equity	13,137,965	12,157,669
Long-term debt, net	8,413,725	7,783,646
Securitized long-term debt (See Note 9)	72,609	76,871
Total capitalization	21,624,299	20,018,186
Current liabilities
Accounts payable and accrued liabilities	445,225	445,397
Other current liabilities	733,154	750,620
Current maturities of long-term debt	11,712	1,651
Current maturities of securitized long-term debt (See Note 9)	8,418	8,207
Total current liabilities	1,198,509	1,205,875
Deferred income taxes	2,793,163	2,593,342
Regulatory excess deferred taxes	155,169	177,315
Regulatory cost of removal obligation	527,287	507,815
Deferred credits and other liabilities	681,954	691,932
Total capitalization and liabilities	$ 26,980,381	$ 25,194,465