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Fair Value (Tables)
12 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]  
Fair Value, Assets Measured on Recurring Basis
The following tables present the fair value hierarchy for those assets and liabilities on the Consolidated Balance Sheets measured at fair value on a recurring basis as of December 31, 2020 and 2019:
 December 31, 2020
  
TotalLevel 1Level 2Level 3
Assets:
Cash and cash equivalents$320.3 $318.6 $1.7 $ 
Restricted cash0.8 0.8   
Short-term investments37.6  37.6  
Foreign currency hedges1.1  1.1  
Total Assets$359.8 $319.4 $40.4 $ 
Liabilities:
Foreign currency hedges$8.1 $ $8.1 $ 
Total Liabilities$8.1 $ $8.1 $ 
 December 31, 2019
  
TotalLevel 1Level 2Level 3
Assets:
Cash and cash equivalents$160.7 $158.2 $2.5 $— 
Cash and cash equivalents measured at net
asset value
48.8 
Restricted cash6.7 6.7 — — 
Short-term investments25.7 — 25.7 — 
Short-term investments measured at net asset value0.1 
Foreign currency hedges7.6 — 7.6 — 
Total Assets$249.6 $164.9 $35.8 $— 
Liabilities:
Foreign currency hedges$1.4 $— $1.4 $— 
Total Liabilities$1.4 $— $1.4 $—