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REGULATORY ASSETS AND LIABILITIES (Tables)

3 Months Ended

Mar. 31, 2021

Regulatory Assets and Liabilities Disclosure [Abstract]

Schedule of regulatory assets

(in millions)						March 31, 2021						December 31, 2020
Regulatory assets
Pension and OPEB costs						$	1,073.9					$	1,101.6
Plant retirements						733.1						740.8
Environmental remediation costs						623.1						638.2
Income tax related items						459.3						454.6
Energy costs recoverable through rate adjustments (1)						301.6						1.1
Asset retirement obligations						186.0						181.3
SSR						134.6						135.6
Securitization						106.9						105.2
Uncollectible expense						73.0						82.0
Derivatives						9.6						26.5
Other, net						92.7						77.2
Total regulatory assets						$	3,793.8					$	3,544.1
Balance sheet presentation
Amounts recoverable from customers (1)						$	306.7					$	20.0
Regulatory assets						3,487.1						3,524.1
Total regulatory assets						$	3,793.8					$	3,544.1

(1)The increase in these regulatory assets primarily relates to the high natural gas costs that were incurred as a result of the extreme winter weather conditions in February 2021. See Note 22, Regulatory Environment, for more information.

Schedule of regulatory liabilities

(in millions)						March 31, 2021						December 31, 2020
Regulatory liabilities
Income tax related items						$	2,111.0					$	2,137.7
Removal costs						1,234.6						1,221.1
Pension and OPEB benefits						373.1						378.1
Electric transmission costs						75.9						78.5
Earnings sharing mechanisms						30.8						36.9
Energy costs refundable through rate adjustments						24.7						59.9
Derivatives						17.4						16.4
Energy efficiency programs						11.0						9.9
Uncollectible expense						3.2						25.5
Other, net						21.6						15.1
Total regulatory liabilities						$	3,903.3					$	3,979.1
Balance sheet presentation
Other current liabilities						$	12.5					$	51.0
Regulatory liabilities						3,890.8						3,928.1
Total regulatory liabilities						$	3,903.3					$	3,979.1

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Tabular disclosure of assets that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet.

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-Publisher FASB
-Name Accounting Standards Codification
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Tabular disclosure of regulatory liabilities. Detailed information about liabilities that result from rate actions of a regulator. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability.

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