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Debt - Narrative (Details)
$ in Millions
1 Months Ended 9 Months Ended
Jun. 22, 2020
USD ($)
Oct. 31, 2017
USD ($)
Sep. 30, 2023
USD ($)
facility
quarterly_payment
Jun. 30, 2022
USD ($)
Senior Secured Credit Facility - Amended III        
Debt Instrument [Line Items]        
Commitment Fee     0.23%  
Senior Secured Credit Facility - Amended III | Minimum        
Debt Instrument [Line Items]        
Commitment Fee     0.15%  
Senior Secured Credit Facility - Amended III | Maximum        
Debt Instrument [Line Items]        
Commitment Fee     0.28%  
Two Committed Letter of Credit Facilities | Letter of Credit        
Debt Instrument [Line Items]        
Available capacity amount     $ 9  
Number of term loan facilities | facility     2  
Amount available     $ 39  
Undrawn letters of credit     30  
Fifteen Million Committed Facility | Letter of Credit        
Debt Instrument [Line Items]        
Maximum borrowing capacity     15  
Twenty-four Million Committed Facility | Letter of Credit        
Debt Instrument [Line Items]        
Maximum borrowing capacity     24  
Two Unsecured Letter of Credit Facilities | Letter of Credit        
Debt Instrument [Line Items]        
Available capacity amount     $ 32  
Number of term loan facilities | facility     2  
Amount available     $ 55  
Undrawn letters of credit     23  
Forty Million Unsecured Letter Of Credit Facility | Letter of Credit        
Debt Instrument [Line Items]        
Amount available     40  
Fifteen Million Unsecured Letter Of Credit Facility | Letter of Credit        
Debt Instrument [Line Items]        
Amount available     $ 15  
Senior Secured Credit Facility - Amended III | SOFR        
Debt Instrument [Line Items]        
Interest rate margin     1.50%  
Senior Secured Credit Facility - Amended III | SOFR | Minimum        
Debt Instrument [Line Items]        
Interest rate margin     1.25%  
Senior Secured Credit Facility - Amended III | SOFR | Maximum        
Debt Instrument [Line Items]        
Interest rate margin     1.75%  
Senior Secured Credit Facility - Amended III | Base Rate        
Debt Instrument [Line Items]        
Interest rate margin     0.50%  
Senior Secured Credit Facility - Amended III | Base Rate | Minimum        
Debt Instrument [Line Items]        
Interest rate margin     0.25%  
Senior Secured Credit Facility - Amended III | Base Rate | Maximum        
Debt Instrument [Line Items]        
Interest rate margin     0.75%  
Term Loan A | Senior Secured Credit Facility - Amended III        
Debt Instrument [Line Items]        
Debt, aggregate principal amount       $ 1,400
First two years quarterly principal payment, percentage       0.625%
Number of quarterly installment payments at 0.625% | quarterly_payment     8  
Post two years quarterly principal payment, percentage       1.25%
Revolving Credit Facility | Senior Secured Credit Facility - Amended III        
Debt Instrument [Line Items]        
Maximum borrowing capacity       $ 1,000
Available capacity amount     $ 437  
Senior unsecured notes | Four hundred million senior unsecured notes        
Debt Instrument [Line Items]        
Debt, aggregate principal amount $ 400      
Debt maturity period 5 years      
Interest rate percentage 5.50%      
Senior unsecured notes | Six hundred million senior unsecured notes        
Debt Instrument [Line Items]        
Debt, aggregate principal amount   $ 600    
Debt maturity period   10 years    
Interest rate percentage   4.625%