Schedule II - Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Summary of Allowance for Doubtful Accounts and Revenue Adjustments [Table Text Block]

Allowance for Doubtful Accounts and Other Receivables for the Years Ended:	Balance at Beginning of Year		Charged to Expense		Write-Offs, Net of Recoveries			Balance at End of Year
December 31, 2018		15.9		8.9		(0.9	)		23.9
December 31, 2019		23.9		2.8		(13.4	)		13.3
December 31, 2020		13.3		5.6		(0.5	)		18.4