REGULATORY ASSETS AND LIABILITIES

3 Months Ended

Mar. 31, 2020

Regulatory Assets and Liabilities Disclosure [Abstract]

The following regulatory assets and liabilities were reflected on our balance sheets at March 31, 2020 and December 31, 2019. For more information on our regulatory assets and liabilities, see Note 5, Regulatory Assets and Liabilities, in our 2019 Annual Report on Form 10-K.



(in millions)	March 31, 2020		December 31, 2019
Regulatory assets
Pension and OPEB costs	$	1,042.5	$	1,066.6
Plant retirements	851.5		856.4
Environmental remediation costs	686.4		685.5
Income tax related items	457.6		457.8
Asset retirement obligations	188.8		137.5
SSR	140.5		151.5
Uncollectible expense	83.4		52.2
Derivatives	31.8		33.8
We Power generation	18.7		25.8
Other, net	77.6		60.5
Total regulatory assets	$	3,578.8	$	3,527.6

Balance sheet presentation
Other current assets	$	12.7	$	20.9
Regulatory assets	3,566.1		3,506.7
Total regulatory assets	$	3,578.8	$	3,527.6



(in millions)	March 31, 2020		December 31, 2019
Regulatory liabilities
Income tax related items	$	2,222.9	$	2,248.8
Removal costs	1,195.0		1,181.5
Pension and OPEB benefits	349.5		354.9
Energy costs refundable through rate adjustments	162.2		89.8
Electric transmission costs	51.0		42.2
Earnings sharing mechanisms	40.6		43.5
Uncollectible expense	39.0		39.1
Energy efficiency programs	35.6		30.7
Decoupling	35.0		36.8
Other, net	12.1		13.1
Total regulatory liabilities	$	4,142.9	$	4,080.4

Balance sheet presentation
Amounts refundable to customers	$	155.8	$	87.6
Regulatory liabilities	3,987.1		3,992.8
Total regulatory liabilities	$	4,142.9	$	4,080.4