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Property and Equipment - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Jun. 30, 2020 | Mar. 31, 2020
Contract Drilling |  |
Property Plant And Equipment [Line Items] |  |
Percentage of expected cash flows on undiscounted basis exceeding the carrying values of asset groups |  | 15.00%
Pressure Pumping |  |
Property Plant And Equipment [Line Items] |  |
Percentage of expected cash flows on undiscounted basis exceeding the carrying values of asset groups |  | 22.00%
Directional Drilling |  |
Property Plant And Equipment [Line Items] |  |
Percentage of expected cash flows on undiscounted basis exceeding the carrying values of asset groups |  | 3.00%
Oilfield Rentals |  |
Property Plant And Equipment [Line Items] |  |
Percentage of expected cash flows on undiscounted basis exceeding the carrying values of asset groups |  | 9.00%
Rigs and Spare Rig Components That Would No Longer Be Marketed |  |
Property Plant And Equipment [Line Items] |  |
Impairment charge of drilling equipment | $ 8.3 |

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