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Unaudited Financial Information (Tables)

3 Months Ended

Dec. 31, 2022

Accounting Policies [Abstract]

Schedule of Regulatory Assets

Significant regulatory assets and liabilities as of December 31, 2022 and September 30, 2022 included the following:

			December 31, 2022						September 30, 2022
			(In thousands)
Regulatory assets:
Pension and postretirement benefit costs			$	26,977					$	31,122
Infrastructure mechanisms (1)			164,818						235,972
Winter Storm Uri incremental costs (2)			2,125,787						2,109,454
Deferred gas costs			41,096						119,742
Regulatory excess deferred taxes (3)			48,033						47,311
Recoverable loss on reacquired debt			3,364						3,406
Deferred pipeline record collection costs			38,647						36,898
Other			23,088						21,467
			$	2,471,810					$	2,605,372
Regulatory liabilities:
Regulatory excess deferred taxes (3)			$	506,406					$	545,021
Regulatory cost of removal obligation			572,384						568,307
Deferred gas costs			39,013						28,834
Asset retirement obligation			5,737						5,737
APT annual adjustment mechanism			37,443						31,138
Pension and postretirement benefit costs			151,843						156,857
Other			27,141						23,013
			$	1,339,967					$	1,358,907

(1)Infrastructure mechanisms in Texas, Louisiana and Tennessee allow for the deferral of all eligible expenses associated with capital expenditures incurred pursuant to these rules, including the recording of interest on deferred expenses until the next rate proceeding (rate case or annual rate filing), at which time investment and costs would be recoverable through base rates.

(2)Includes extraordinary gas costs incurred during Winter Storm Uri and certain related carrying costs. See Note 8 to the unaudited condensed consolidated financial statements for further information. This amount is recorded within other current assets and deferred charges and other assets on the condensed consolidated balance sheet as of December 31, 2022 and September 30, 2022.

(3)Regulatory excess deferred taxes represent changes in our net deferred tax liability related to our cost of service ratemaking due to the enactment of Tax Cuts and Jobs Act of 2017 (the "TCJA") and a Kansas legislative change enacted in fiscal 2020. See Note 11 to the unaudited condensed consolidated financial statements for further information.

Schedule of Regulatory Liabilities

Significant regulatory assets and liabilities as of December 31, 2022 and September 30, 2022 included the following:

			December 31, 2022						September 30, 2022
			(In thousands)
Regulatory assets:
Pension and postretirement benefit costs			$	26,977					$	31,122
Infrastructure mechanisms (1)			164,818						235,972
Winter Storm Uri incremental costs (2)			2,125,787						2,109,454
Deferred gas costs			41,096						119,742
Regulatory excess deferred taxes (3)			48,033						47,311
Recoverable loss on reacquired debt			3,364						3,406
Deferred pipeline record collection costs			38,647						36,898
Other			23,088						21,467
			$	2,471,810					$	2,605,372
Regulatory liabilities:
Regulatory excess deferred taxes (3)			$	506,406					$	545,021
Regulatory cost of removal obligation			572,384						568,307
Deferred gas costs			39,013						28,834
Asset retirement obligation			5,737						5,737
APT annual adjustment mechanism			37,443						31,138
Pension and postretirement benefit costs			151,843						156,857
Other			27,141						23,013
			$	1,339,967					$	1,358,907

(1)Infrastructure mechanisms in Texas, Louisiana and Tennessee allow for the deferral of all eligible expenses associated with capital expenditures incurred pursuant to these rules, including the recording of interest on deferred expenses until the next rate proceeding (rate case or annual rate filing), at which time investment and costs would be recoverable through base rates.

(2)Includes extraordinary gas costs incurred during Winter Storm Uri and certain related carrying costs. See Note 8 to the unaudited condensed consolidated financial statements for further information. This amount is recorded within other current assets and deferred charges and other assets on the condensed consolidated balance sheet as of December 31, 2022 and September 30, 2022.

(3)Regulatory excess deferred taxes represent changes in our net deferred tax liability related to our cost of service ratemaking due to the enactment of Tax Cuts and Jobs Act of 2017 (the "TCJA") and a Kansas legislative change enacted in fiscal 2020. See Note 11 to the unaudited condensed consolidated financial statements for further information.

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- Definition

Tabular disclosure of assets that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 715
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6501251&loc=d3e52485-110419

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-Name Accounting Standards Codification
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-SubTopic 340
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-URI https://asc.fasb.org/extlink&oid=6499975&loc=d3e44264-110382

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Tabular disclosure of regulatory liabilities. Detailed information about liabilities that result from rate actions of a regulator. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 405
-Section 25
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394

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