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Debt - Narrative (Details) - USD ($)
3 Months Ended
Oct. 16, 2020
Apr. 01, 2020
Jan. 31, 2021
Oct. 31, 2020
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Short-term debt     $ 400,700,000 $ 409,300,000
Term loan        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Short-term debt     350,000,000.0 $ 350,000,000.0
Term Loan Agreement 2020 | Term loan        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Debt term 364 days      
Debt instrument, face amount $ 350,000,000.0   350,000,000.0  
Short-term debt     $ 350,000,000.0  
Interest rate     0.94%  
Term Loan Agreement 2020 | Term loan | Base Rate        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Debt instrument, basis spread on variable rate 0.00%      
Term Loan Agreement 2020 | Term loan | London Interbank Offered Rate (LIBOR)        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Debt instrument, basis spread on variable rate 0.80%      
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility And Term Loan Facility 2020        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Potential additional borrowing capacity   $ 1,605,000,000    
Required minimum interest coverage ratio   3.00    
Required maximum total leverage ratio   3.75    
Interest coverage ratio     25.53  
Total leverage ratio     2.10  
Interest coverage ratio and total leverage ratio, expected minimum compliance period     12 months  
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility And Term Loan Facility 2020 | Base Rate | Minimum        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Debt instrument, basis spread on variable rate   0.00%    
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility And Term Loan Facility 2020 | Base Rate | Maximum        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Debt instrument, basis spread on variable rate   0.50%    
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility And Term Loan Facility 2020 | London Interbank Offered Rate (LIBOR) | Minimum        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Debt instrument, basis spread on variable rate   0.75%    
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility And Term Loan Facility 2020 | London Interbank Offered Rate (LIBOR) | Maximum        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Debt instrument, basis spread on variable rate   1.50%    
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Aggregate principal amount   $ 1,290,000,000 $ 1,290,000,000.0  
Proceeds from line of credit   $ 445,000,000.0    
Debt outstanding     564,000,000.0  
Available borrowing capacity     724,600,000  
Outstanding letters of credit     1,400,000  
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility | Minimum        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Commitment fee percentage   0.10%    
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility | Maximum        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Commitment fee percentage   0.20%    
Credit Agreement 2020 | Line of Credit | 2020 Term Loan Facility        
Schedule of Long Term And Short Term Debt Instruments [Line Items]        
Aggregate principal amount   $ 850,000,000.0 850,000,000.0  
Proceeds from line of credit   $ 850,000,000.0    
Debt outstanding     $ 850,000,000.0  
Interest rate     1.14%  
Expensed debt issuance costs     $ 100,000