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Borrowing Arrangements - Narrative (Details)
1 Months Ended 3 Months Ended 77 Months Ended
Nov. 30, 2022
USD ($)
Oct. 31, 2021
USD ($)
Jan. 31, 2020
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2015
USD ($)
Apr. 30, 2023
USD ($)
Oct. 31, 2021
USD ($)
Senior Notes              
Debt Instrument [Line Items]              
Debt redemption percentage of principle amount             101.00%
2021 Notes | Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount   $ 1,000,000,000       $ 1,000,000,000 $ 1,000,000,000
Stated interest rate   2.40%         2.40%
Unamortized discount   $ 3,000,000         $ 3,000,000
Debt issuance costs   9,000,000         $ 9,000,000
Proceeds from debt, net of issuance costs   $ 988,000,000          
2020 Notes | Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount     $ 500,000,000     500,000,000  
Stated interest rate     2.85%        
Unamortized discount     $ 1,000,000        
Debt issuance costs     5,000,000        
Proceeds from debt, net of issuance costs     494,000,000        
2015 Notes | Senior Notes              
Debt Instrument [Line Items]              
Repayments of debt     $ 450,000,000        
2017 Notes due in 2027 | Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount       $ 500,000,000      
Stated interest rate       3.50%      
Unamortized discount       $ 3,000,000      
Debt issuance costs       5,000,000      
Proceeds from debt, net of issuance costs       492,000,000      
2017 Notes | Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount           500,000,000  
Repayments of debt       $ 400,000,000      
2015 Notes | Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount         $ 300,000,000 300,000,000  
Stated interest rate         4.375%    
Unamortized discount         $ 1,000,000    
Debt issuance costs         3,000,000    
Proceeds from debt, net of issuance costs         $ 296,000,000    
Revolving Credit Facility | The Credit Agreement              
Debt Instrument [Line Items]              
Maximum borrowing capacity $ 1,500,000,000            
Line of credit facility, increase limit $ 2,000,000,000            
Debt covenant, interest coverage ratio, minimum 3.50            
Debt covenant, leverage ratio, maximum 4.00            
Line of credit facility, outstanding borrowings           $ 0  
Revolving Credit Facility | The Credit Agreement | Minimum | Base Rate              
Debt Instrument [Line Items]              
Basis spread on variable rate           0.00%  
Revolving Credit Facility | The Credit Agreement | Minimum | Secured Overnight Financing Rate (SOFR)              
Debt Instrument [Line Items]              
Basis spread on variable rate           0.785%  
Revolving Credit Facility | The Credit Agreement | Maximum | Base Rate              
Debt Instrument [Line Items]              
Basis spread on variable rate           0.375%  
Revolving Credit Facility | The Credit Agreement | Maximum | Secured Overnight Financing Rate (SOFR)              
Debt Instrument [Line Items]              
Basis spread on variable rate           1.375%