XML 59 R49.htm IDEA: XBRL DOCUMENT v3.23.3
Debt and Credit Facility - Summary of Senior Notes (Details) - Senior Notes - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2019
Debt Instrument [Line Items]        
Total debt $ 1,050.0 $ 1,050.0    
Unamortized issuance costs (10.6) (11.9)    
Total carrying amount $ 1,039.4 1,038.1    
4.50% Senior Notes        
Debt Instrument [Line Items]        
Issuance Date May 21, 2021      
Debt Instrument, Maturity Date Jun. 30, 2031      
Effective interest rate (percent) 4.70%      
Total debt $ 550.0 550.0 $ 550.0 $ 550.0
6.50% Senior Notes        
Debt Instrument [Line Items]        
Issuance Date, Start 2020-04      
Issuance Date, End 2020-05      
4.625% Senior Notes        
Debt Instrument [Line Items]        
Issuance Date Nov. 30, 2019      
Debt Instrument, Maturity Date Mar. 31, 2028      
Effective interest rate (percent) 4.80%      
Total debt $ 500.0 $ 500.0 $ 500.0 $ 500.0