CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2023	Sep. 30, 2022
ASSETS
Property, plant and equipment	$ 21,582,327	$ 20,238,139
Less accumulated depreciation and amortization	3,136,441	2,997,900
Net property, plant and equipment	18,445,886	17,240,239
Current assets
Cash and cash equivalents	95,175	51,554
Accounts receivable, net (See Note 5)	523,741	363,708
Gas stored underground	183,467	357,941
Other current assets (See Note 8)	270,723	2,274,490
Total current assets	1,073,106	3,047,693
Goodwill	731,257	731,257
Deferred charges and other assets (See Note 8)	1,061,612	1,173,800
Total assets	21,311,861	22,192,989
Shareholders’ equity
Common stock, no par value (stated at $0.005 per share); 200,000,000 shares authorized; issued and outstanding: March 31, 2023 — 144,484,650 shares; September 30, 2022 — 140,896,598 shares	722	704
Additional paid-in capital	6,213,523	5,838,118
Accumulated other comprehensive income	360,997	369,112
Retained earnings	3,629,963	3,211,157
Shareholders’ equity	10,205,205	9,419,091
Long-term debt	6,553,097	5,760,647
Total capitalization	16,758,302	15,179,738
Current liabilities
Accounts payable and accrued liabilities	364,973	496,019
Other current liabilities	746,512	720,157
Short-term debt	0	184,967
Current maturities of long-term debt	1,512	2,201,457
Total current liabilities	1,112,997	3,602,600
Deferred income taxes	2,135,738	1,999,505
Regulatory excess deferred taxes	315,071	385,213
Regulatory cost of removal obligation	481,723	487,631
Deferred credits and other liabilities	508,030	538,302
Total capitalization and liabilities	$ 21,311,861	$ 22,192,989