v3.25.3
Debt - Senior credit facility (Details) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended
Mar. 25, 2025
Mar. 24, 2025
Jan. 01, 2025
Jun. 30, 2023
Sep. 30, 2025
Dec. 31, 2024
Sep. 30, 2024
Dec. 31, 2023
Oct. 15, 2021
Debt                  
Outstanding amount         $ 972 $ 1,051      
Revolving credit facility                  
Debt                  
Maximum borrowing capacity $ 450 $ 550             $ 550
Number of days stipulated for springing maturity per the agreement 91 days                
Interest rate (as a percent)         6.20%   7.00%    
Outstanding amount         $ 70 205      
Revolving credit facility | SOFR                  
Debt                  
Interest rate basis SOFR SOFR   SOFR          
Revolving credit facility | Alternate base rate                  
Debt                  
Interest rate basis alternate base rate alternate base rate   alternate base rate          
Revolving credit facility | Minimum                  
Debt                  
Commitment fee (as percent) 0.30% 0.375% 0.30% 0.375%          
First lien leverage ratio       4.00% 4.00%        
Revolving credit facility | Minimum | SOFR                  
Debt                  
Basis spread on variable rate 1.50% 1.50%   1.50%          
Revolving credit facility | Minimum | Alternate base rate                  
Debt                  
Basis spread on variable rate 0.50% 0.50%   0.50%          
Revolving credit facility | Maximum                  
Debt                  
Basis spread on variable rate       1.75%          
Commitment fee (as percent) 0.375% 0.50% 0.375% 0.50%          
First lien leverage ratio       1.00% 1.00%        
Revolving credit facility | Maximum | SOFR                  
Debt                  
Basis spread on variable rate 2.25% 2.75%   2.75%          
Revolving credit facility | Maximum | Alternate base rate                  
Debt                  
Basis spread on variable rate 1.25% 1.75%              
Letters of credit                  
Debt                  
Maximum borrowing capacity $ 35                
Outstanding amount         $ 3 3      
Amount available for borrowing           342      
Standby letters of credit                  
Debt                  
Maximum borrowing capacity   $ 25             25
Term Loan A                  
Debt                  
Outstanding principal $ 300 $ 250             $ 250
Percentage of original principal amount 0.25% 0.25%   0.25%          
Change in percentage of original principal amount 1.25% 1.25%   1.25%          
Outstanding amount         298 $ 242      
Term Loan A | SOFR                  
Debt                  
Interest rate basis SOFR SOFR   SOFR          
Term Loan A | Alternate base rate                  
Debt                  
Interest rate basis   alternate base rate   alternate base rate          
Term Loan A | Minimum | SOFR                  
Debt                  
Basis spread on variable rate 2.00% 2.00%   2.00%          
Term Loan A | Minimum | Alternate base rate                  
Debt                  
Basis spread on variable rate 1.00% 1.00%   1.00%          
Term Loan A | Maximum | SOFR                  
Debt                  
Basis spread on variable rate 2.75% 3.25%   3.25%          
Term Loan A | Maximum | Alternate base rate                  
Debt                  
Basis spread on variable rate 1.75% 2.25%   2.25%          
Senior Credit Facility                  
Debt                  
Interest rate (as a percent)           6.30%   7.30%  
Amount available for borrowing         $ 377