Unaudited Financial Information (Tables)

9 Months Ended

Jun. 30, 2023

Significant regulatory assets and liabilities as of June 30, 2023 and September 30, 2022 included the following:


	June 30, 2023		September 30, 2022
	(In thousands)
Regulatory assets:
Pension and postretirement benefit costs	$	22,941	$	31,122
Infrastructure mechanisms (1)	218,999		235,972
Winter Storm Uri incremental costs (2)	32,441		2,109,454

Deferred gas costs	48,649		119,742
Regulatory excess deferred taxes (3)	47,252		47,311
Recoverable loss on reacquired debt	3,280		3,406
Deferred pipeline record collection costs	52,588		36,898


Other	16,430		21,467
	$	442,580	$	2,605,372
Regulatory liabilities:
Regulatory excess deferred taxes (3)	$	425,440	$	545,021

Regulatory cost of removal obligation	574,098		568,307
Deferred gas costs	34,933		28,834
Asset retirement obligation	5,737		5,737
APT annual adjustment mechanism	42,797		31,138
Pension and postretirement benefit costs	141,032		156,857
Other	27,055		23,013
	$	1,251,092	$	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 condensed consolidated financial statements for further information.

(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 12 to the condensed consolidated financial statements for further information.

Schedule of Regulatory Liabilities

Significant regulatory assets and liabilities as of June 30, 2023 and September 30, 2022 included the following:


	June 30, 2023		September 30, 2022
	(In thousands)
Regulatory assets:
Pension and postretirement benefit costs	$	22,941	$	31,122
Infrastructure mechanisms (1)	218,999		235,972
Winter Storm Uri incremental costs (2)	32,441		2,109,454

Deferred gas costs	48,649		119,742
Regulatory excess deferred taxes (3)	47,252		47,311
Recoverable loss on reacquired debt	3,280		3,406
Deferred pipeline record collection costs	52,588		36,898


Other	16,430		21,467
	$	442,580	$	2,605,372
Regulatory liabilities:
Regulatory excess deferred taxes (3)	$	425,440	$	545,021

Regulatory cost of removal obligation	574,098		568,307
Deferred gas costs	34,933		28,834
Asset retirement obligation	5,737		5,737
APT annual adjustment mechanism	42,797		31,138
Pension and postretirement benefit costs	141,032		156,857
Other	27,055		23,013
	$	1,251,092	$	1,358,907

(2)Includes extraordinary gas costs incurred during Winter Storm Uri and certain related carrying costs. See Note 8 to the condensed consolidated financial statements for further information.