SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2021

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II

WISCONSIN PUBLIC SERVICE CORPORATION

VALUATION AND QUALIFYING ACCOUNTS

Allowance for Doubtful Accounts (in millions)	Balance at Beginning of Period		Expense (1)		Deferral		Net Write-offs (2)		Balance at End of Period
December 31, 2021	$	18.3	$	6.2	$	(7.0)	$	(6.4)	$	11.1
December 31, 2020	4.2		8.2		9.7		(3.8)		18.3
December 31, 2019	4.2		5.5		—		(5.5)		4.2

(1)    Net of recoveries.

(2)    Represents amounts written off to the reserve, net of adjustments to regulatory assets.