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Capital Stock (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Feb. 09, 2022
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Aug. 31, 2021
Aug. 14, 2019
Class of Stock [Line Items]                        
Payments for repurchase of common stock               $ 399,100 $ 226,305 $ 300,201    
Common stock, dividends, announced (in usd per share)           $ 0.125            
Common stock, dividends, per share, declared (in usd per share)   $ 0.14 $ 0.125 $ 0.125 $ 0.125   $ 0.125          
Subsequent Event                        
Class of Stock [Line Items]                        
Payments for repurchase of common stock $ 400,000                      
Common stock, dividends, per share, declared (in usd per share) $ 0.20                      
3Q19 Repurchase Program                        
Class of Stock [Line Items]                        
Stock repurchase program, authorized amount                       $ 200,000
3Q21 Repurchase Program                        
Class of Stock [Line Items]                        
Stock repurchase program, authorized amount                     $ 200,000  
Total of 3Q19, 1Q20, and 3Q21 Repurchase Programs                        
Class of Stock [Line Items]                        
Stock repurchase program, authorized amount                     $ 675,000  
Stock repurchased during period, shares               17,800,000        
Accelerated share repurchases, final price paid per share               $ 22.48        
Stock repurchase program, remaining authorized repurchase amount               $ 0