REGULATORY ASSETS AND LIABILITIES (Tables)

6 Months Ended

Jun. 30, 2022

SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]

SCHEDULE OF REGULATED ASSETS AND LIABILITIES

The tables below present a summary of regulatory assets and liabilities, net of amortization, for the periods indicated:

	June 30, 2022
	Current		Noncurrent		Total
	(Thousands of dollars)
Winter weather event costs	$	1,560,219	$	350,243	$	1,910,462
Under-recovered purchased-gas costs	5,189		—		5,189
Pension and postemployment benefit costs	4,010		250,630		254,640
Reacquired debt costs	811		3,708		4,519
MGP remediation costs	98		29,792		29,890
Ad-valorem tax	10,002		—		10,002
WNA	10,791		—		10,791
Customer credit deferrals	16,408		—		16,408
Other	2,235		2,648		4,883
Total regulatory assets, net of amortization	1,609,763		637,021		2,246,784
Income tax rate changes	—		(538,717)		(538,717)
Over-recovered purchased-gas costs	(33,755)		—		(33,755)
Total regulatory liabilities	(33,755)		(538,717)		(572,472)
Net regulatory assets and liabilities	$	1,576,008	$	98,304	$	1,674,312

	December 31, 2021
	Current		Noncurrent		Total
	(Thousands of dollars)
Winter weather event costs	$	1,536,054	$	428,023	$	1,964,077
Under-recovered purchased-gas costs	31,863		—		31,863
Pension and postemployment benefit costs	11,507		260,559		272,066
Reacquired debt costs	812		4,070		4,882
MGP remediation costs	98		29,841		29,939
Ad-valorem tax	8,561		—		8,561
WNA	10,044		—		10,044
Customer credit deferrals	10,685		—		10,685
Other	2,052		2,369		4,421
Total regulatory assets, net of amortization	1,611,676		724,862		2,336,538
Income tax rate changes	—		(552,928)		(552,928)
Over-recovered purchased-gas costs	(8,090)		—		(8,090)
Total regulatory liabilities	(8,090)		(552,928)		(561,018)
Net regulatory assets and liabilities	$	1,603,586	$	171,934	$	1,775,520