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Debt - Narrative (Details)
$ in Millions
May 15, 2023
USD ($)
Aug. 07, 2020
USD ($)
Jun. 30, 2023
USD ($)
May 14, 2023
USD ($)
Dec. 31, 2022
USD ($)
Debt Instrument [Line Items]          
Debt issuance costs, current, net     $ 13.5   $ 1.3
Long-term debt     909.3   1,413.8
Disposal Group, Disposed of by Sale, Not Discontinued Operations          
Debt Instrument [Line Items]          
Cash $ 217.2        
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Travel Health Business          
Debt Instrument [Line Items]          
Cash purchase price for sale of business 270.0        
Line of Credit          
Debt Instrument [Line Items]          
Long-term debt     $ 250.2   $ 598.0
Term Loan          
Debt Instrument [Line Items]          
Repayments of long-term debt $ 144.4        
3.875% Senior Unsecured Notes due 2028 | Prior to August 15, 2023          
Debt Instrument [Line Items]          
Debt instrument, redemption price, percentage   100.00%      
3.875% Senior Unsecured Notes due 2028 | Senior Notes          
Debt Instrument [Line Items]          
Stated percentage   3.875% 3.875%   3.875%
Long-term debt   $ 450.0 $ 450.0   $ 450.0
3.875% Senior Unsecured Notes due 2028 | Maximum | Prior to August 15, 2023          
Debt Instrument [Line Items]          
Debt instrument, redemption price, percentage   40.00%      
3.875% Senior Unsecured Notes due 2028 | Maximum | Upon the occurrence of a change in control          
Debt Instrument [Line Items]          
Debt instrument, redemption price, percentage   101.00%      
Amended Credit Agreement | Federal Funds Rate          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 0.50%        
Amended Credit Agreement | Secured Overnight Financing Rate (SOFR)          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 1.00%        
Amended Credit Agreement | Base Rate          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 5.00%        
Amended Credit Agreement | Until March 31, 2024 | SOFR, EURIBOR, or CDOR          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 6.00%        
Amended Credit Agreement | Line of Credit          
Debt Instrument [Line Items]          
Debt instrument, covenant, leverage ratio, maximum 4.50        
Amended Credit Agreement | Line of Credit | Fiscal Quarters Ending in 2024          
Debt Instrument [Line Items]          
Debt instrument, covenant, interest coverage ratio, minimum 2.25        
Amended Credit Agreement | Line of Credit | Fiscal Quarters Ending After 2024          
Debt Instrument [Line Items]          
Debt instrument, covenant, interest coverage ratio, minimum 2.50        
Amended Credit Agreement | Maximum | Fiscal Quarters Ending After March 31, 2024 | SOFR, EURIBOR, or CDOR          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 4.00%        
Amended Credit Agreement | Maximum | Fiscal Quarters Ending After March 31, 2024 | Base Rate          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 3.00%        
Amended Credit Agreement | Minimum | Fiscal Quarters Ending After March 31, 2024 | SOFR, EURIBOR, or CDOR          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 2.75%        
Amended Credit Agreement | Minimum | Fiscal Quarters Ending After March 31, 2024 | Base Rate          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 1.75%        
Revolving Credit Facility          
Debt Instrument [Line Items]          
Repayments of long-term debt $ 342.8        
Revolving Credit Facility | Term Loan          
Debt Instrument [Line Items]          
Long-term debt     $ 206.1   $ 362.8
Revolving Credit Facility | Amended Credit Agreement          
Debt Instrument [Line Items]          
Current borrowing capacity 300.0     $ 600.0  
Required quarterly principal payments $ 3.9        
Revolving Credit Facility | Amended Credit Agreement | Maximum          
Debt Instrument [Line Items]          
Line of credit facility, unused capacity, commitment fee percentage 0.40%        
Revolving Credit Facility | Amended Credit Agreement | Minimum          
Debt Instrument [Line Items]          
Line of credit facility, unused capacity, commitment fee percentage 0.15%        
Senior secured credit agreement - Term loan due 2025 | Amended Credit Agreement          
Debt Instrument [Line Items]          
Debt instrument, covenant, consideration threshold $ 75.0