XML 82 R67.htm IDEA: XBRL DOCUMENT v3.22.4
Fair Value - Financial Assets and (Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents $ 182.4 $ 31.8
Short-term investments 127.7 18.4
Prepaid expenses and other current assets 57.8 27.1
Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents 159.8 15.7
Money market mutual funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents 18.6 16.1
Securities guaranteed by U.S. government    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents 4.0  
Measured on a recurring basis: | Level 1 | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents 0.0 0.0
Short-term investments 0.0 0.0
Measured on a recurring basis: | Level 1 | Money market mutual funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents 18.6 16.1
Measured on a recurring basis: | Level 1 | Securities guaranteed by U.S. government    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents 0.0  
Short-term investments 0.0  
Measured on a recurring basis: | Level 1 | Other governmental securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments 0.0  
Measured on a recurring basis: | Level 1 | Interest rate cap contract    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Prepaid expenses and other current assets 0.0  
Forward-starting interest rate swap contracts 0.0 0.0
Derivative liability   0.0
Measured on a recurring basis: | Level 1 | Interest rate swap contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Prepaid expenses and other current assets 0.0  
Forward-starting interest rate swap contracts 0.0  
Derivative liability   0.0
Measured on a recurring basis: | Level 1 | Forward-starting interest rate swap contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Prepaid expenses and other current assets   0.0
Forward-starting interest rate swap contracts   0.0
Measured on a recurring basis: | Level 2 | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents 159.8 15.7
Short-term investments 91.7 18.4
Measured on a recurring basis: | Level 2 | Money market mutual funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents 0.0 0.0
Measured on a recurring basis: | Level 2 | Securities guaranteed by U.S. government    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents 4.0  
Short-term investments 25.0  
Measured on a recurring basis: | Level 2 | Other governmental securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments 11.0  
Measured on a recurring basis: | Level 2 | Interest rate cap contract    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Prepaid expenses and other current assets 1.2  
Forward-starting interest rate swap contracts 0.3 0.1
Derivative liability   (0.4)
Measured on a recurring basis: | Level 2 | Interest rate swap contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Prepaid expenses and other current assets 21.5  
Forward-starting interest rate swap contracts 30.3  
Derivative liability   (2.4)
Measured on a recurring basis: | Level 2 | Forward-starting interest rate swap contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Prepaid expenses and other current assets   0.7
Forward-starting interest rate swap contracts   15.2
Measured on a recurring basis: | Level 3 | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents 0.0 0.0
Short-term investments 0.0 0.0
Measured on a recurring basis: | Level 3 | Money market mutual funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents 0.0 0.0
Measured on a recurring basis: | Level 3 | Securities guaranteed by U.S. government    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents 0.0  
Short-term investments 0.0  
Measured on a recurring basis: | Level 3 | Other governmental securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments 0.0  
Measured on a recurring basis: | Level 3 | Interest rate cap contract    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Prepaid expenses and other current assets 0.0  
Forward-starting interest rate swap contracts 0.0 0.0
Derivative liability   0.0
Measured on a recurring basis: | Level 3 | Interest rate swap contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Prepaid expenses and other current assets 0.0  
Forward-starting interest rate swap contracts $ 0.0  
Derivative liability   0.0
Measured on a recurring basis: | Level 3 | Forward-starting interest rate swap contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Prepaid expenses and other current assets   0.0
Forward-starting interest rate swap contracts   0.0
Measured on a non-recurring basis: | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
N/A   0.0
Measured on a non-recurring basis: | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
N/A   0.0
Measured on a non-recurring basis: | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
N/A   $ 14.2