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Fair Value Information (Tables)
3 Months Ended
Mar. 31, 2021
Fair Value Disclosures [Abstract]  
Schedule of fair value of financial instruments The following table includes the fair value of our financial instruments for which disclosure of fair value is required (in millions):
March 31, 2021December 31, 2020
Fair Value
Hierarchy
Level
Carrying
Amount
Estimated
Fair
Value
Carrying
Amount
Estimated
Fair
Value
Assets
Cash and cash equivalents1$100.1 $100.1 $111.5 $111.5 
Liabilities
Revolving credit facility2175.0 175.0 180.0 180.0