Supplementary Information For Oil And Gas Producing Activities (Tables)

12 Months Ended

Sep. 30, 2022

Supplementary Information For Oil And Gas Producing Activities Unaudited [Abstract]

Capitalized Costs Relating To Oil And Gas Producing Activities

Capitalized Costs Relating to Oil and Gas Producing Activities

	At September 30
	2022		2021
	(Thousands)
Proved Properties(1)	$	5,915,807	$	6,652,341
Unproved Properties	65,994		103,759
	5,981,801		6,756,100
Less — Accumulated Depreciation, Depletion and Amortization	4,034,266		4,881,972
	$	1,947,535	$	1,874,128

(1)Includes asset retirement costs of $120.8 million and $152.8 million at September 30, 2022 and 2021, respectively.

Summary Of Capitalized Costs Of Unproved Properties Excluded From Amortization

Following is a summary of costs excluded from amortization at September 30, 2022:

	Total as of September 30, 2022		Year Costs Incurred
			2022		2021		2020		Prior
	(Thousands)
Acquisition Costs	$	41,831	$	—	$	—	$	29,698	$	12,133
Development Costs	24,163		17,590		4,085		2,488		—
Exploration Costs	—		—		—		—		—
Capitalized Interest	—		—		—		—		—
	$	65,994	$	17,590	$	4,085	$	32,186	$	12,133

Costs Incurred In Oil And Gas Property Acquisition, Exploration And Development Activities

Costs Incurred in Oil and Gas Property Acquisition, Exploration and Development Activities

	Year Ended September 30
	2022		2021		2020
	(Thousands)
United States
Property Acquisition Costs:
Proved	$	2,491	$	1,801	$	245,976
Unproved	10,665		5,102		42,922
Exploration Costs(1)	9,631		15,413		3,891
Development Costs(2)	528,684		329,368		355,742
Asset Retirement Costs	9,768		20,194		62,080
	$	561,239	$	371,878	$	710,611

(1)Amounts for 2022, 2021 and 2020 include capitalized interest of zero, $0.1 million and zero respectively.

(2)Amounts for 2022, 2021 and 2020 include capitalized interest of $0.6 million, $0.4 million and $1.0 million, respectively.

Results Of Operations For Producing Activities

Results of Operations for Producing Activities

	Year Ended September 30
	2022		2021		2020
United States	(Thousands, except per Mcfe amounts)
Operating Revenues:
Gas (includes transfers to operations of $5,696, $3,061 and $1,921, respectively)(1)	$	1,730,723	$	780,477	$	402,447
Oil, Condensate and Other Liquids	150,957		135,191		107,844
Total Operating Revenues(2)	1,881,680		915,668		510,291
Production/Lifting Costs	283,914		267,316		203,670
Franchise/Ad Valorem Taxes	25,112		22,128		15,582
Purchased Emission Allowance Expense	1,305		2,940		2,930
Accretion Expense	7,530		7,743		5,237
Depreciation, Depletion and Amortization ($0.57, $0.54 and $0.69 per Mcfe of production, respectively)	202,418		177,055		166,759
Impairment of Oil and Gas Producing Properties	—		76,152		449,438
Income Tax Expense	368,925		98,593		(92,820)
Results of Operations for Producing Activities (excluding corporate overheads and interest charges)	$	992,476	$	263,741	$	(240,505)

(1)There were no revenues from sales to affiliates for all years presented.

(2)Exclusive of hedging gains and losses. See further discussion in Note J — Financial Instruments.

Proved Developed And Undeveloped Oil And Gas Reserve Quantities

	Gas MMcf
	U.S.
	Appalachian Region		West Coast Region	Total Company
Proved Developed and Undeveloped Reserves:
September 30, 2019	2,915,886		33,633	2,949,519
Extensions and Discoveries	7,246	(1)	—	7,246
Revisions of Previous Estimates	(85,647)		(2,772)	(88,419)
Production	(225,513)	(2)	(1,889)	(227,402)
Purchases of Minerals in Place	684,141		—	684,141
September 30, 2020	3,296,113		28,972	3,325,085
Extensions and Discoveries	689,395	(1)	—	689,395
Revisions of Previous Estimates	19,940		3,033	22,973
Production	(312,300)	(2)	(1,720)	(314,020)
September 30, 2021	3,693,148		30,285	3,723,433
Extensions and Discoveries	837,510	(1)	—	837,510
Revisions of Previous Estimates	2,882		71	2,953
Production	(341,700)	(2)	(1,211)	(342,911)
Sale of Minerals in Place	(21,178)		(29,145)	(50,323)
September 30, 2022	4,170,662		—	4,170,662
Proved Developed Reserves:
September 30, 2019	1,901,162		33,633	1,934,795
September 30, 2020	2,744,851		28,972	2,773,823
September 30, 2021	3,061,178		30,285	3,091,463
September 30, 2022	3,312,568		—	3,312,568
Proved Undeveloped Reserves:
September 30, 2019	1,014,724		—	1,014,724
September 30, 2020	551,262		—	551,262
September 30, 2021	631,970		—	631,970
September 30, 2022	858,094		—	858,094

(1)Extensions and discoveries include 7 Bcf (during 2020), 180 Bcf (during 2021) and 301 Bcf (during 2022), of Marcellus Shale gas (which exceed 15% of total reserves) in the Appalachian region. Extensions and discoveries include 0 Bcf (during 2020), 497 Bcf (during 2021) and 537 Bcf (during 2022), of Utica Shale gas (which exceed 15% of total reserves) in the Appalachian region.

(2)Production includes 169,453 MMcf (during 2020), 218,016 MMcf (during 2021) and 209,463 MMcf (during 2022), from Marcellus Shale fields. Production includes 55,392 MMcf (during 2020), 93,253 MMcf (during 2021) and 130,240 MMcf (during 2022), from Utica Shale fields.

	Oil Mbbl
	U.S.
	Appalachian Region	West Coast Region	Total Company
Proved Developed and Undeveloped Reserves:
September 30, 2019	13	24,860	24,873
Extensions and Discoveries	—	288	288
Revisions of Previous Estimates	2	(715)	(713)
Production	(3)	(2,345)	(2,348)
September 30, 2020	12	22,088	22,100
Extensions and Discoveries	—	1,041	1,041
Revisions of Previous Estimates	1	630	631
Production	(2)	(2,233)	(2,235)
September 30, 2021	11	21,526	21,537
Extensions and Discoveries	—	296	296
Revisions of Previous Estimates	255	532	787
Production	(16)	(1,588)	(1,604)
Sales of Minerals in Place	—	(20,766)	(20,766)
September 30, 2022	250	—	250
Proved Developed Reserves:
September 30, 2019	13	24,246	24,259
September 30, 2020	12	22,088	22,100
September 30, 2021	11	20,930	20,941
September 30, 2022	250	—	250
Proved Undeveloped Reserves:
September 30, 2019	—	614	614
September 30, 2020	—	—	—
September 30, 2021	—	596	596
September 30, 2022	—	—	—

Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves

	Year Ended September 30
	2022		2021		2020
	(Thousands)
United States
Future Cash Inflows	$	19,209,099	$	10,175,182	$	6,493,362
Less:
Future Production Costs	3,138,226		3,423,629		3,149,857
Future Development Costs	781,847		597,662		501,678
Future Income Tax Expense at Applicable Statutory Rate	3,876,272		1,397,175		454,553
Future Net Cash Flows	11,412,754		4,756,716		2,387,274
Less:
10% Annual Discount for Estimated Timing of Cash Flows	5,964,424		2,403,144		1,164,804
Standardized Measure of Discounted Future Net Cash Flows	$	5,448,330	$	2,353,572	$	1,222,470

Principal Sources Of Change In The Standardized Measure Of Discounted Future Net Cash Flows

The principal sources of change in the standardized measure of discounted future net cash flows were as follows:

	Year Ended September 30
	2022		2021		2020
	(Thousands)
United States
Standardized Measure of Discounted Future
Net Cash Flows at Beginning of Year	$	2,353,572	$	1,222,470	$	1,736,319
Sales, Net of Production Costs	(1,572,402)		(626,132)		(290,975)
Net Changes in Prices, Net of Production Costs	4,132,889		1,478,995		(1,109,101)
Extensions and Discoveries	1,355,257		462,040		4,236
Changes in Estimated Future Development Costs	(32,160)		48,247		99,884
Purchases of Minerals in Place	—		—		170,363
Sales of Minerals in Place	(311,308)		—		—
Previously Estimated Development Costs Incurred	154,253		81,239		219,938
Net Change in Income Taxes at Applicable Statutory Rate	(1,180,349)		(415,993)		248,182
Revisions of Previous Quantity Estimates	3,316		(52,383)		(28,337)
Accretion of Discount and Other	545,262		155,089		171,961
Standardized Measure of Discounted Future Net Cash Flows at End of Year	$	5,448,330	$	2,353,572	$	1,222,470