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Property and Equipment (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Property Plant And Equipment [Line Items]    
Total property and equipment $ 8,497,333 $ 8,551,419
Less accumulated depreciation, depletion and impairment (5,310,174) (5,244,742)
Property and equipment, net 3,187,159 3,306,677
Equipment    
Property Plant And Equipment [Line Items]    
Total property and equipment 8,067,957 8,114,326
Oil and natural gas properties    
Property Plant And Equipment [Line Items]    
Total property and equipment 220,351 226,646
Buildings    
Property Plant And Equipment [Line Items]    
Total property and equipment 184,211 184,700
Land    
Property Plant And Equipment [Line Items]    
Total property and equipment $ 24,814 $ 25,747