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Stock-Based Compensation and Stockholders' Equity - Share Repurchase Program (Details) - Common Stock - USD ($)
$ / shares in Units, $ in Millions
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Nov. 30, 2018
Class of Stock [Line Items]      
Stock repurchase program, authorized amount     $ 150
Treasury stock (in shares) 223,823    
Common stock acquired value $ 9    
Common stock acquired average price per share (in dollars per share) $ 40.80    
Common stock shares acquired (in shares) 0 0