Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2020

Schedule Of Depreciable Plant By Segment

The following is a summary of depreciable plant by segment:


	As of September 30
	2020		2019
	(Thousands)
Exploration and Production	$	6,384,086	$	5,747,731
Pipeline and Storage	2,418,265		2,191,166
Gathering	849,204		577,021
Utility	2,234,433		2,159,841

All Other and Corporate	20,372		112,857
	$	11,906,360	$	10,788,616

Average Depreciation Depletion And Amortization Rates

Average depreciation, depletion and amortization rates are as follows:


	Year Ended September 30
	2020			2019			2018
Exploration and Production, per Mcfe(1)	$	0.71		$	0.73		$	0.70
Pipeline and Storage	2.4		%	2.2		%	2.2		%
Gathering	3.2		%	3.6		%	3.4		%
Utility	2.7		%	2.7		%	2.8		%

All Other and Corporate	3.6		%	1.8		%	2.4		%

(1)Amounts include depletion of oil and gas producing properties as well as depreciation of fixed assets. As disclosed in Note O — Supplementary Information for Oil and Gas Producing Activities, depletion of oil and gas producing properties amounted to $0.69, $0.71 and $0.67 per Mcfe of production in 2020, 2019 and 2018, respectively.

Components Of Accumulated Other Comprehensive Income (Loss)

The components of Accumulated Other Comprehensive Income (Loss) and changes for the years ended September 30, 2020 and 2019, net of related tax effects, are as follows (amounts in parentheses indicate debits) (in thousands):


	Gains and Losses on Derivative Financial Instruments		Gains and Losses on Securities Available for Sale		Funded Status of the Pension and Other Post-Retirement Benefit Plans		Total
Year Ended September 30, 2020
Balance at October 1, 2019	$	34,675	$	—	$	(86,830)	$	(52,155)
Other Comprehensive Gains and Losses Before Reclassifications	7,284		—		(14,857)		(7,573)
Amounts Reclassified From Other Comprehensive Loss	(67,774)		—		11,795		(55,979)
Cumulative Effect of Adoption of Authoritative Guidance for Hedging	950		—		—		950

Balance at September 30, 2020	$	(24,865)	$	—	$	(89,892)	$	(114,757)
Year Ended September 30, 2019
Balance at October 1, 2018	$	(28,611)	$	7,437	$	(46,576)	$	(67,750)
Other Comprehensive Gains and Losses Before Reclassifications	58,682		—		(33,616)		25,066
Amounts Reclassified From Other Comprehensive Income	2,738		—		5,634		8,372
Reclassification Adjustment for the Cumulative Effect of Adoption of Authoritative Guidance for Financial Assets and Liabilities	—		(7,437)		—		(7,437)
Reclassification of Stranded Tax Effects Related to the 2017 Tax Reform Act	1,866		—		(12,272)		(10,406)
Balance at September 30, 2019	$	34,675	$	—	$	(86,830)	$	(52,155)

Schedule Of Reclassifications Out Of Accumulated Other Comprehensive Income (Loss)

The details about the reclassification adjustments out of accumulated other comprehensive income (loss) for the years ended September 30, 2020 and 2019 are as follows (amounts in parentheses indicate debits to the income statement) (in thousands):


Details About Accumulated Other Comprehensive Income (Loss) Components	Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) for the Year Ended September 30,		Affected Line Item in the Statement Where Net Income is Presented
	2020	2019
Gains (Losses) on Derivative Financial Instrument Cash Flow Hedges:
Commodity Contracts	$93,691	($3,460)	Operating Revenues
Commodity Contracts	661	(1,182)	Purchased Gas
Foreign Currency Contracts	(1,057)	(822)	Operating Revenues
Amortization of Prior Year Funded Status of the Pension and Other Post-Retirement Benefit Plans:
Prior Service Cost	(237)	(264)	(1)
Net Actuarial Loss	(15,124)	(7,068)	(1)
	77,934	(12,796)	Total Before Income Tax
	(21,955)	4,424	Income Tax Expense
	$55,979	($8,372)	Net of Tax

(1)These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost. Refer to Note K — Retirement Plan and Other Post-Retirement Benefits for additional details.

Schedule of Materials, Supplies and Emission Allowances

The components of the Company's materials, supplies and emission allowances are as follows:


	Year Ended September 30
	2020		2019
	(Thousands)
Materials and Supplies — at average cost	$	33,859	$	29,819
Emission Allowances	18,018		10,898
	$	51,877	$	40,717

Schedule of Cash, Cash Equivalents and Restricted Cash

The components, as reported on the Company's Consolidated Balance Sheets, of the total cash, cash equivalents, and restricted cash presented on the Statement of Cash Flows are as follows (in thousands):


	Year Ended September 30
	2020		2019		2018		2017

Cash and Temporary Cash Investments	$	20,541	$	20,428	$	229,606	$	555,530
Hedging Collateral Deposits	—		6,832		3,441		1,741
Cash, Cash Equivalents, and Restricted Cash	$	20,541	$	27,260	$	233,047	$	557,271

Schedule Of Other Current Assets

The components of the Company’s Other Current Assets are as follows:


	Year Ended September 30
	2020		2019
	(Thousands)
Prepayments	$	12,851	$	12,728
Prepaid Property and Other Taxes	14,269		14,361
Federal Income Taxes Receivable	—		42,388
State Income Taxes Receivable	3,828		8,579
Fair Values of Firm Commitments	—		7,538
Regulatory Assets	16,609		11,460
	$	47,557	$	97,054

Schedule of Other Accruals And Current Liabilities

The components of the Company’s Other Accruals and Current Liabilities are as follows:


	Year Ended September 30
	2020		2019
	(Thousands)
Accrued Capital Expenditures	$	33,344	$	33,713
Regulatory Liabilities	44,890		50,332

Federal Income Taxes Payable	163		—

Liability for Royalty and Working Interests	15,665		18,057
Non-Qualified Benefit Plan Liability	14,460		13,194
Other	31,654		24,304
	$	140,176	$	139,600