REGULATORY ASSETS AND LIABILITIES (Tables)

9 Months Ended

Sep. 30, 2021

Regulatory Assets and Liabilities Disclosure [Abstract]

Schedule of regulatory assets

(in millions)	September 30, 2021		December 31, 2020
Regulatory assets
Finance leases	$	1,021.9	$	985.5
Plant retirements	661.1		669.8
Pension and OPEB costs	446.8		477.0
Income tax related items	388.7		392.6
SSR	131.6		135.6
Securitization (1)	102.9		105.2
AROs	43.7		28.6
Other, net	12.4		9.0
Total regulatory assets	$	2,809.1	$	2,803.3

(1)See Note 17, Variable Interest Entities, for more information.

Schedule of regulatory liabilities

(in millions)	September 30, 2021		December 31, 2020
Regulatory liabilities
Income tax related items	$	742.7	$	806.7
Removal costs	694.0		677.2
Pension and OPEB benefits	129.4		132.1
Derivatives (1)	106.6		5.9
Electric transmission costs	64.1		61.7
Uncollectible expense	25.8		15.5
Other, net	14.8		8.8
Total regulatory liabilities	$	1,777.4	$	1,707.9
Balance sheet presentation
Other current liabilities	$	—	$	4.2
Regulatory liabilities	1,777.4		1,703.7
Total regulatory liabilities	$	1,777.4	$	1,707.9

(1)    For most energy-related physical and financial contracts that qualify as derivatives, the PSCW allows the effects of fair value accounting to be offset to regulatory assets and liabilities. See Note 13, Derivative Instruments, for more information.