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Stock-Based Compensation - Deferred Stock Units (DSUs) (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Stock-Based Compensation      
Participant right to receive common stock at end of deferral period (in shares) 1    
DSUs      
Units      
Balance outstanding at the beginning of the period (in shares) 418,014    
Granted (in shares) 79,072    
Converted to Common Stock (in shares) (53,799)    
Balance outstanding at the end of the period (in shares) 443,287 418,014  
Weighted Average Grant Date Fair Value per Unit      
Balance outstanding at the beginning of the period, (in usd per share) $ 27.63    
Granted (in usd per share) 34.40 $ 45.49 $ 32.27
Vested (in usd per share) 25.11    
Balance outstanding at the end of the period (in usd per share) $ 29.07 $ 27.63  
Aggregate intrinsic value for DSUs outstanding $ 23 $ 13 $ 17
Aggregate intrinsic values for DSUs converted to common stock during the period $ 3 $ 1 $ 1
Weighted average grant date fair value (in usd per share) $ 34.40 $ 45.49 $ 32.27