CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018
ASSETS
Property, plant and equipment	$ 13,758,899	$ 12,217,648
Construction in progress	421,694	349,725
Total property, plant and equipment and construction in progress	14,180,593	12,567,373
Less accumulated depreciation and amortization	2,392,924	2,196,226
Net property, plant and equipment	11,787,669	10,371,147
Current assets
Cash and cash equivalents	24,550	13,771
Accounts receivable, less allowance for doubtful accounts	230,571	253,295
Gas stored underground	130,138	165,732
Other current assets	72,772	46,055
Total current assets	458,031	478,853
Goodwill	730,706	730,419
Deferred charges and other assets	391,213	294,018
Total assets	13,367,619	11,874,437
Shareholders’ equity
Common stock, no par value (stated at $.005 per share); 200,000,000 shares authorized; issued and outstanding	597	556
Additional paid-in capital	3,712,194	2,974,926
Accumulated other comprehensive loss	(114,583)	(83,647)
Retained earnings	2,152,015	1,878,116
Shareholders’ equity	5,750,223	4,769,951
Long-term debt	3,529,452	2,493,665
Total capitalization	9,279,675	7,263,616
Commitments and contingencies (See Note 12)
Current liabilities
Accounts payable and accrued liabilities	265,024	217,283
Other current liabilities	479,501	547,068
Short-term debt	464,915	575,780
Current maturities of long-term debt	0	575,000
Total current liabilities	1,209,440	1,915,131
Deferred income taxes	1,300,015	1,154,067
Regulatory excess deferred taxes (See Note 13)	705,101	739,670
Regulatory cost of removal obligation	473,172	466,405
Pension and postretirement liabilities	279,083	177,520
Deferred credits and other liabilities	121,133	158,028
Total shareholders' equity and liabilities	$ 13,367,619	$ 11,874,437