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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]  
Schedule of Fair Value of the Company's Financial Instruments
The fair value of the Company’s financial instruments is presented in the following table (in millions):

December 31, 2020December 31, 2019
Level 2Level 2
Assets
Foreign currency derivative instruments$— $2.5 
Treasury lock agreements35.6 — 
Liabilities
Debt instruments4,368.6 3,535.7