CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013
ASSETS
Property, plant and equipment	$ 7,861,741	$ 7,722,019
Less accumulated depreciation and amortization	1,708,778	1,691,364
Net property, plant and equipment	6,152,963	6,030,655
Current assets
Cash and cash equivalents	194,563	66,199
Accounts receivable, net	661,213	301,992
Gas stored underground	286,542	244,741
Other current assets	157,252	64,201
Total current assets	1,299,570	677,133
Goodwill	741,363	741,363
Deferred charges and other assets	422,195	485,117
Total assets	8,616,091	7,934,268
Shareholders' equity
Common stock, no par value (stated at $.005 per share)	455	453
Additional paid-in capital	1,769,516	1,765,811
Retained earnings	828,311	775,267
Accumulated other comprehensive income (loss)	63,032	38,878
Shareholders' equity	2,661,314	2,580,409
Long-term debt	1,955,750	2,455,671
Total capitalization	4,617,064	5,036,080
Current liabilities
Accounts payable and accrued liabilities	458,198	241,611
Other current liabilities	365,508	368,891
Short-term debt	689,795	367,984
Current maturities of long-term debt	500,000	0
Total current liabilities	2,013,501	978,486
Deferred income taxes	1,230,052	1,164,053
Regulatory cost of removal obligation	356,617	359,299
Pension and postretirement liabilities	359,534	358,787
Deferred credits and other liabilities	39,323	37,563
Total shareholders' equity and liabilities	$ 8,616,091	$ 7,934,268