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Charges and Credits - Additional Information (Detail) $ in Millions | 3 Months Ended
--- | ---
Jun. 30, 2020 USD ($) Emp | Mar. 31, 2020 USD ($) Unit
Charges And Credits [Line Items] |  |
Goodwill impairment charge |  | $ 3,100
Expected increase/decrease in discount rate assumption |  | 0.50%
Number of reporting units fair value to be impacted | Unit |  | 7
Intangible assets |  | $ 3,300
Carrying Value Of Impaired Intangible Asset |  |
Charges And Credits [Line Items] |  |
Intangible assets |  | 900
Carrying Value Of Impaired Intangible Asset | North America |  |
Charges And Credits [Line Items] |  |
Intangible assets |  | 1,300
North America pressure pumping asset impairments | North America |  |
Charges And Credits [Line Items] |  |
Intangible assets |  | 600
Severance |  |
Charges And Credits [Line Items] |  |
Intangible assets |  | 202
Other Restructuring |  |
Charges And Credits [Line Items] |  |
Intangible assets |  | 79
Valuation allowance | North America |  |
Charges And Credits [Line Items] |  |
Intangible assets |  | 164
Severance |  |
Charges And Credits [Line Items] |  |
Intangible assets | $ 1,021 |
Reduction in workforce | Emp | 21,000 |
Asset Performance Solutions Investments | Latin America |  |
Charges And Credits [Line Items] |  |
Intangible assets | $ 730 |
Fixed Asset Impairment |  |
Charges And Credits [Line Items] |  |
Intangible assets | 666 |
Inventory Write Down |  |
Charges And Credits [Line Items] |  |
Intangible assets | 603 |
Right-of-use Asset Impairments |  |
Charges And Credits [Line Items] |  |
Intangible assets | 311 |
Costs Associated With Exiting Certain Activities1 |  |
Charges And Credits [Line Items] |  |
Intangible assets | 205 |
Multiclient Seismic Data Impairment |  |
Charges And Credits [Line Items] |  |
Intangible assets | 156 |
Other |  |
Charges And Credits [Line Items] |  |
Intangible assets | 61 |
Allowance For Doubtful Accounts |  |
Charges And Credits [Line Items] |  |
Intangible assets | 42 |
Repurchase of bonds |  |
Charges And Credits [Line Items] |  |
Intangible assets | 40 |
Postretirement Benefits Curtailment Gain |  |
Charges And Credits [Line Items] |  |
Intangible assets | $ 69 |
Cameron |  |
Charges And Credits [Line Items] |  |
Intangible assets |  | 2,200
Smith International Inc Smith Aand Geoservices |  |
Charges And Credits [Line Items] |  |
Intangible assets |  | $ 1,100
Minimum |  |
Charges And Credits [Line Items] |  |
Discount rate utilized |  | 12.00%
Maximum |  |
Charges And Credits [Line Items] |  |
Discount rate utilized |  | 13.50%
Expected percentage change in fair value of reporting units |  | 5.00%

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