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Overview, Basis of Presentation and Recently Issued Authoritative Accounting Guidance (Tables)
9 Months Ended
Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Financing Receivable, Allowance for Credit Loss
Changes in our allowance for doubtful accounts for the nine months ended September 30, 2020 were as follows:

(in millions)
Balance at December 31, 2019$3.7 
Adoption of new accounting standard0.1 
Charge to expense1.2 
Write-off of receivables(1.0)
Other(0.2)
Balance at September 30, 2020$3.8