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Impairments and Other Charges
3 Months Ended
Mar. 31, 2019
Impairments and Other Charges [Abstract]  
Restructuring, Impairment, and Other Activities Disclosure Impairments and Other Charges
    
During the first quarter of 2019, we recorded $61 million in pre-tax charges, primarily related to an impairment of legacy sand delivery equipment. These charges are reflected as impairments and other charges in our condensed consolidated statements of operations for the three months ended March 31, 2019.