REGULATORY ASSETS AND LIABILITIES (Tables)

9 Months Ended

Sep. 30, 2020

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:

	September 30, 2020
	Current		Noncurrent		Total
	(Thousands of dollars)
Under-recovered purchased-gas costs	$	22,485	$	—	$	22,485
Pension and postemployment benefit costs	21,132		345,006		366,138
Reacquired debt costs	812		5,068		5,880
MGP remediation costs	98		11,636		11,734
Ad-valorem tax	5,260		—		5,260
Weather normalization	4,289		—		4,289
Customer credit deferrals	14,899		—		14,899
Other	2,773		2,407		5,180
Total regulatory assets, net of amortization	71,748		364,117		435,865
Income tax rate changes (a)	—		(555,258)		(555,258)
Over-recovered purchased-gas costs	(20,454)		—		(20,454)
Total regulatory liabilities, net of amortization	(20,454)		(555,258)		(575,712)
Net regulatory assets and liabilities	$	51,294	$	(191,141)	$	(139,847)

(a) Includes the reclassification of $81.5 million of deferred taxes related to the elimination of state income tax for utilities in Kansas.

	December 31, 2019
	Current		Noncurrent		Total
	(Thousands of dollars)
Under-recovered purchased-gas costs	$	17,172	$	—	$	17,172
Pension and postemployment benefit costs	21,213		373,266		394,479
Reacquired debt costs	812		5,677		6,489
MGP remediation costs	98		9,709		9,807
Ad-valorem tax	2,921		—		2,921
Other	5,224		2,384		7,608
Total regulatory assets, net of amortization	47,440		391,036		438,476
Income tax rate changes	(10,297)		(503,518)		(513,815)
Over-recovered purchased-gas costs	(27,623)		—		(27,623)
Weather normalization	(7,281)		—		(7,281)
Total regulatory liabilities	(45,201)		(503,518)		(548,719)
Net regulatory assets and liabilities	$	2,239	$	(112,482)	$	(110,243)