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Stockholders' Equity - Treasury Stock Acquisition (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Equity Class Of Treasury Stock [Line Items]      
Treasury shares at beginning of period 83,402,322 77,336,387 53,701,096
Other     31,013
Treasury shares at end of period 84,128,995 83,402,322 77,336,387
Treasury shares at beginning of period $ 1,366,313 $ 1,345,134 $ 1,080,448
Treasury stock acquired, cost 6,328 21,179 264,686
Other     372
Treasury shares at end of period $ 1,372,641 $ 1,366,313 $ 1,345,134
Pioneer acquisition [Member]      
Equity Class Of Treasury Stock [Line Items]      
Treasury stock acquired, shares 275,477    
Treasury stock acquired, cost $ 2,601    
Long Term Incentive Plan      
Equity Class Of Treasury Stock [Line Items]      
Treasury stock acquired, shares 451,196 239,669 1,037,947
Treasury stock acquired, cost $ 3,727 $ 1,179 $ 14,205
2013 program      
Equity Class Of Treasury Stock [Line Items]      
Treasury stock acquired, shares   5,826,266 22,566,331
Treasury stock acquired, cost   $ 20,000 $ 250,109