COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Schedule of minimum future commitments related to purchase obligations

The following table shows our minimum future commitments related to these purchase obligations as of December 31, 2019.

				Payments Due By Period
(in millions)	Date Contracts Extend Through	Total Amounts Committed		2020		2021		2022		2023		2024		Later Years
Electric utility:
Purchased power	2051	$	362.8	$	74.5	$	46.9	$	41.8	$	39.6	$	40.6	$	119.4
Coal supply and transportation	2024	247.3		83.2		58.8		53.8		50.8		0.7		—
Natural gas utility supply and transportation	2048	399.7		51.7		46.5		42.9		27.0		11.6		220.0
Total		$	1,009.8	$	209.4	$	152.2	$	138.5	$	117.4	$	52.9	$	339.4

Schedule of regulatory assets and reserves related to manufactured gas plant sites

We have established the following regulatory assets and reserves for manufactured gas plant sites as of December 31:

(in millions)	2019		2018
Regulatory assets	$	113.5	$	108.3
Reserves for future environmental remediation	83.8		90.3