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Charges and credits.

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Charges and credits pretax.

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Corporate income tax rate.

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Debt instrument repurchase expenses.

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Decrease in goodwill impairment charge.

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Defined benefit pension plan non-cash settlement charges.

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Discount rate utilized.

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Expected decrease in discount rate assumption.

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Expected increase in discount rate assumption.

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Impairments and other charges.

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Increase in goodwill impairment charge.

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Promissory note in exchange of accounts receivable.

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Promissory note term.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiary and other recognized entity not within country of domicile. Includes, but is not limited to, other basis differences.

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Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

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A credit or adjustment for government or taxing authority authorized decrease in taxes owed as a result of meeting certain tax policy conditions.

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Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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Charges and Credits - Additional Information (Detail) $ in Millions			3 Months Ended						12 Months Ended
	Oct. 01, 2019 USD ($)	Aug. 31, 2019 USD ($) Unit	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Charges And Credits [Line Items]
Charges and credits, Pretax			$ 104
Benefits Paid			257
Non-cash settlement charge			37
Debt instrument, repurchase amount			22						$ 22
Total number of reporting units \| Unit		17
Goodwill		$ 25,000	16,042		$ 24,931		$ 25,118		$ 16,042	$ 24,931	$ 25,118
Expected increase in discount rate assumption									0.50%
Increase in goodwill impairment charge									$ 300
Expected decrease in discount rate assumption									0.50%
Decrease in goodwill impairment charge									$ 400
Intangible assets		1,085
Gain on sale of business										215
Charges and credits				$ 12,191						124	3,590
Charges and credits, Pretax				12,901			1,025	$ 50		141	3,764
Charge relating to one-time mandatory tax on previously deferred foreign earnings							410				$ 410
Tax credits resulting from remeasurement of net deferred tax liabilities							334
Promissory note in exchange of accounts receivable								$ 700
Promissory note term								3 years
Promissory note interest rate								6.50%
Debt instrument fair value			15,300		14,600				$ 15,300	14,600
US tax reform
Charges And Credits [Line Items]
Charges and credits							76
US tax reform \| Tax Year2018
Charges And Credits [Line Items]
Reduced corporate income tax rate											21.00%
Promissory Notes
Charges And Credits [Line Items]
Debt instrument fair value							135				$ 135
Land seismic business
Charges And Credits [Line Items]
Impairment charge, Pretax							90
Impairments and Other
Charges And Credits [Line Items]
Charges and credits, Pretax											3,211
Cost of Sale
Charges And Credits [Line Items]
Charges and credits, Pretax											245
Merger and Integration
Charges And Credits [Line Items]
Charges and credits, Pretax											308
Promissory Note Fair Value Adjustment and Other
Charges And Credits [Line Items]
Charges and credits											498
Charges and credits, Pretax								$ 460			510
Smith International, Inc
Charges And Credits [Line Items]
Intangible assets		$ 842
Cameron \| Merger and Integration
Charges And Credits [Line Items]
Charges and credits, Pretax											308
Minimum
Charges And Credits [Line Items]
Discount rate utilized									12.50%
Maximum
Charges And Credits [Line Items]
Discount rate utilized									14.00%
Seven Reporting Units
Charges And Credits [Line Items]
Total number of reporting units \| Unit		7
Goodwill		$ 13,800
Ten Reporting Units
Charges And Credits [Line Items]
Total number of reporting units \| Unit		10
Goodwill		$ 11,200
Nine Reporting Units
Charges And Credits [Line Items]
Total number of reporting units \| Unit		9
Goodwill impairment charge		$ 8,800
Three Reporting Units
Charges And Credits [Line Items]
Total number of reporting units \| Unit		3
Goodwill		$ 1,500
Three Reporting Units \| Minimum
Charges And Credits [Line Items]
Goodwill		400
Three Reporting Units \| Maximum
Charges And Credits [Line Items]
Goodwill		$ 600
Tenth Reporting Unit
Charges And Credits [Line Items]
Total number of reporting units \| Unit		10
Goodwill		$ 900
Rockwell Automation
Charges And Credits [Line Items]
Percentage of equity ownership interest	53.00%
Schlumberger
Charges And Credits [Line Items]
Percentage of equity ownership interest	47.00%
Cash recieved	$ 238
Gain of deconsolidation in formation of joint venture			247
North America
Charges And Credits [Line Items]
Intangible assets		243
Venezuela
Charges And Credits [Line Items]
Charges and credits, Pretax							938
Facility and other exit costs
Charges And Credits [Line Items]
Charges and credits, Pretax							156
Facility and other exit costs \| North America
Charges And Credits [Line Items]
Charges and credits, Pretax			225
Write Down Of Assets \| North America
Charges And Credits [Line Items]
Charges and credits, Pretax			123
Operating Lease Right-of-use Asset
Charges And Credits [Line Items]
Intangible assets		98
Operating Lease Right-of-use Asset \| North America
Charges And Credits [Line Items]
Charges and credits, Pretax			55
Other Exit Costs \| North America
Charges And Credits [Line Items]
Charges and credits, Pretax			47
Sale Of Assets
Charges And Credits [Line Items]
Charges and credits, Pretax			68
Facility Closure Costs
Charges And Credits [Line Items]
Charges and credits, Pretax			36
Severance Costs
Charges And Credits [Line Items]
Charges and credits, Pretax			$ 68
Intangible assets		13		62
Severance Costs \| North America
Charges And Credits [Line Items]
Intangible assets		10
Severance Costs \| Argentina
Charges And Credits [Line Items]
Intangible assets				29
North America pressure pumping asset impairments \| North America
Charges And Credits [Line Items]
Intangible assets		1,575
Charges of Pressure Pumping Equipment
Charges And Credits [Line Items]
Intangible assets		1,324
Supplies Expense
Charges And Credits [Line Items]
Intangible assets		121
Inventory Charges
Charges And Credits [Line Items]
Intangible assets		19
Charges Related to Other Businesses \| North America
Charges And Credits [Line Items]
Intangible assets		310
Fixed Asset Impairment \| North America
Charges And Credits [Line Items]
Intangible assets		230
Inventory Write Down
Charges And Credits [Line Items]
Charges and credits, Pretax							59
Inventory Write Down \| North America
Charges And Credits [Line Items]
Intangible assets		$ 70
Production Related Impairment or Charges \| Argentina
Charges And Credits [Line Items]
Intangible assets				127
Asset Impairment Charges
Charges And Credits [Line Items]
Charges and credits										156
Charges and credits, Pretax										172
Asset Impairment Charges \| Argentina
Charges And Credits [Line Items]
Intangible assets				72
Devaluation Charge \| Argentina
Charges And Credits [Line Items]
Intangible assets				26
Equity Method Investment, Other Than Temporary Impairment
Charges And Credits [Line Items]
Intangible assets				231
Carrying Value of Asset Production Solutions
Charges And Credits [Line Items]
Intangible assets				294
Restructuring Charges
Charges And Credits [Line Items]
Intangible assets				242
Acceleration of Stock-based Compensation Expense Associated With Certain Individuals
Charges And Credits [Line Items]
Intangible assets				57
Business Divestiture Costs
Charges And Credits [Line Items]
Intangible assets				49
Debt Instrument Premium Paid on Repurchase
Charges And Credits [Line Items]
Intangible assets				29
Marine Seismic Acquisition Business
Charges And Credits [Line Items]
Proceeds from divestiture of business					600
Gain on sale of business					$ 215
Charges and credits										(196)
Charges and credits, Pretax										$ (215)
Marine Seismic Acquisition Business \| Shearwater GeoServices
Charges And Credits [Line Items]
Percentage of equity ownership interest					15.00%					15.00%
Impairment of Long-Lived Assets \| Impairments and Other
Charges And Credits [Line Items]
Charges and credits					$ 172
Workforce reductions
Charges And Credits [Line Items]
Charges and credits										$ 164
Charges and credits, Pretax							247			$ 184
Workforce reductions \| Impairments and Other
Charges And Credits [Line Items]
Charges and credits						$ 184
Vessel write-down
Charges And Credits [Line Items]
Charges and credits, Pretax							786
Impairment of intangible ssets
Charges And Credits [Line Items]
Charges and credits, Pretax							78
Other restructuring
Charges And Credits [Line Items]
Intangible assets				$ 45
Charges and credits, Pretax							102
Multiclient seismic data impairment
Charges And Credits [Line Items]
Intangible assets							246
Accounts receivable \| Venezuela
Charges And Credits [Line Items]
Charges and credits, Pretax							469
Other-than temporary impairment \| Promissory Notes
Charges And Credits [Line Items]
Charges and credits, Pretax								$ 105
Other-than temporary impairment \| Venezuela \| Promissory Notes
Charges And Credits [Line Items]
Charges and credits, Pretax							105
Fixed assets \| Venezuela
Charges And Credits [Line Items]
Charges and credits, Pretax							285
Other \| Venezuela
Charges And Credits [Line Items]
Charges and credits, Pretax							79
Loss on long-term construction project
Charges And Credits [Line Items]
Charges and credits, Pretax							$ 245
Loss on long-term construction project \| Cost of Sale
Charges And Credits [Line Items]
Charges and credits											223
Charges and credits, Pretax											$ 245