CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
ASSETS
Property, plant and equipment	$ 24,283,917	$ 22,898,374
Less accumulated depreciation and amortization	3,469,354	3,291,791
Net property, plant and equipment	20,814,563	19,606,583
Current assets
Cash and cash equivalents	262,497	15,404
Restricted cash and cash equivalents	1,272	3,844
Cash and cash equivalents and restricted cash and cash equivalents	263,769	19,248
Accounts receivable, net	596,433	328,654
Gas stored underground	144,128	245,830
Other current assets	428,105	292,036
Total current assets	1,432,435	885,768
Securitized intangible asset, net (See Note 9)	87,279	92,202
Goodwill	731,257	731,257
Deferred charges and other assets	939,106	1,201,158
Total assets	24,004,640	22,516,968
Shareholders’ equity
Common stock, no par value (stated at $0.005 per share); 200,000,000 shares authorized; issued and outstanding: March 31, 2024 — 150,874,552 shares; September 30, 2023 — 148,492,783 shares	754	742
Additional paid-in capital	6,953,761	6,684,120
Accumulated other comprehensive income	495,700	518,528
Retained earnings	4,168,424	3,666,674
Shareholders’ equity	11,618,639	10,870,064
Long-term debt, net	7,444,855	6,554,133
Securitized long-term debt (See Note 9)	81,261	85,078
Total capitalization	19,144,755	17,509,275
Current liabilities
Accounts payable and accrued liabilities	367,887	336,083
Other current liabilities	677,706	763,086
Short-term debt	0	241,933
Current maturities of long-term debt	1,591	1,568
Current maturities of securitized long-term debt (See Note 9)	8,001	9,922
Total current liabilities	1,055,185	1,352,592
Deferred income taxes	2,486,024	2,304,974
Regulatory excess deferred taxes	216,284	253,212
Regulatory cost of removal obligation	506,860	497,017
Deferred credits and other liabilities	595,532	599,898
Total capitalization and liabilities	$ 24,004,640	$ 22,516,968