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Current Liabilities - Narrative (Details)
3 Months Ended
Feb. 01, 2021
USD ($)
May 02, 2019
USD ($)
extension
Oct. 31, 2021
USD ($)
Oct. 31, 2020
USD ($)
Debt Instrument [Line Items]        
Repayments of lines of credit     $ 0 $ 1,000,000,000
Amendment to Master Credit Agreement | Line of Credit        
Debt Instrument [Line Items]        
Aggregate principal amount   $ 1,400,000,000    
Debt to EBITDA ratio (not greater than)   3.25    
EBITDA to interest payable ratio (not less than)   3.00    
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility        
Debt Instrument [Line Items]        
Unsecured revolving credit facility   $ 1,000,000,000    
Revolving credit facility, increase limit   $ 250,000,000    
Unsecured revolving credit facility extension | extension   2    
Repayments of lines of credit       1,000,000,000
Fair value of amount outstanding     0  
Interest paid     0 1,000,000
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility | Base Rate | Minimum        
Debt Instrument [Line Items]        
Basis spread on variable rate   0.00%    
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility | Base Rate | Maximum        
Debt Instrument [Line Items]        
Basis spread on variable rate   0.10%    
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility | LIBOR | Minimum        
Debt Instrument [Line Items]        
Basis spread on variable rate   0.69%    
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility | LIBOR | Maximum        
Debt Instrument [Line Items]        
Basis spread on variable rate   1.10%    
Amendment to Master Credit Agreement | Line of Credit | Term Loan        
Debt Instrument [Line Items]        
Payment on short-term debt $ 325,000,000      
Term loan, increase limit   $ 400,000,000    
Amendment to Master Credit Agreement | Line of Credit | Term Loan | Base Rate | Minimum        
Debt Instrument [Line Items]        
Basis spread on variable rate   0.00%    
Amendment to Master Credit Agreement | Line of Credit | Term Loan | Base Rate | Maximum        
Debt Instrument [Line Items]        
Basis spread on variable rate   0.125%    
Amendment to Master Credit Agreement | Line of Credit | Term Loan | LIBOR | Minimum        
Debt Instrument [Line Items]        
Basis spread on variable rate   0.625%    
Amendment to Master Credit Agreement | Line of Credit | Term Loan | LIBOR | Maximum        
Debt Instrument [Line Items]        
Basis spread on variable rate   1.125%    
Amendment to Master Credit Agreement | Unsecured Debt | Term Loan        
Debt Instrument [Line Items]        
Aggregate principal amount   $ 400,000,000    
Interest paid     $ 0 $ 1,000,000