XML 34 R24.htm IDEA: XBRL DOCUMENT v3.22.2.2
BORROWING ARRANGEMENTS (Details)
3 Months Ended 6 Months Ended
Jul. 31, 2022
USD ($)
facility
Jul. 31, 2022
USD ($)
facility
Aug. 01, 2021
USD ($)
Aug. 19, 2022
USD ($)
facility
Debt Instrument [Line Items]        
Outstanding letter of credit facilities $ 6,400,000 $ 6,400,000    
Standby Letters of Credit        
Debt Instrument [Line Items]        
Amount issued but undrawn under credit facility $ 11,300,000 $ 11,300,000    
Letter of Credit Facility Renewed and Extended        
Debt Instrument [Line Items]        
Number of facilities | facility 3 3    
Maximum borrowing capacity of letter of credit after renewal $ 35,000,000 $ 35,000,000    
Letter of Credit Facility Renewed and Extended | Subsequent Event        
Debt Instrument [Line Items]        
Number of facilities | facility       3
Letter Of Credit Facility Maturing August 2023 | Subsequent Event        
Debt Instrument [Line Items]        
Number of facilities | facility       2
Maximum borrowing capacity of letter of credit after renewal       $ 30,000,000
Letter Of Credit Facility Maturing September 2026 | Subsequent Event        
Debt Instrument [Line Items]        
Number of facilities | facility       1
Maximum borrowing capacity of letter of credit after renewal       $ 5,000,000
Unsecured Revolving Line of Credit        
Debt Instrument [Line Items]        
Current borrowing capacity 500,000,000 500,000,000    
Additional borrowing capacity 250,000,000 250,000,000    
Maximum borrowing capacity including additional borrowing capacity 750,000,000 750,000,000    
Borrowings under revolving line of credit $ 0 $ 0 $ 0  
Unsecured Revolving Line of Credit | Margin Based on Leverage Ratio | Minimum        
Debt Instrument [Line Items]        
Leverage ratio   0.91%    
Unsecured Revolving Line of Credit | Margin Based on Leverage Ratio | Maximum        
Debt Instrument [Line Items]        
Leverage ratio   1.775%    
Unsecured Revolving Line of Credit | Base Rate | Minimum        
Debt Instrument [Line Items]        
Leverage ratio   0.00%    
Unsecured Revolving Line of Credit | Base Rate | Maximum        
Debt Instrument [Line Items]        
Leverage ratio   0.775%