COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2021

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, 2021.

				Payments Due By Period
(in millions)	Date Contracts Extend Through	Total Amounts Committed		2022		2023		2024		2025		2026		Later Years
Electric utility:
Purchased power	2050	$	267.6	$	51.1	$	49.1	$	50.4	$	45.4	$	42.2	$	29.4
Coal supply and transportation	2025	90.9		34.8		30.6		16.8		8.7		—		—
Natural gas utility supply and transportation	2048	431.5		52.6		43.9		34.1		20.9		20.7		259.3
Total		$	790.0	$	138.5	$	123.6	$	101.3	$	75.0	$	62.9	$	288.7

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)	2021		2020
Regulatory assets	$	120.1	$	116.1
Reserves for future environmental remediation	95.0		88.3