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Overview, Basis of Presentation and Recently Issued Authoritative Accounting Guidance (Tables)
3 Months Ended
Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Financing Receivable, Allowance for Credit Loss
Changes in our allowance for doubtful accounts for the three months ended March 31, 2020 were as follows:

(in millions)
 
Balance at December 31, 2019
$
3.7

Adoption of new accounting standard
0.1

Charge to expense
0.3

Balance at March 31, 2020
$
4.1