Revenue (Details) $ in Millions	12 Months Ended
Dec. 31, 2018 USD ($) Division Countries	Dec. 31, 2017 USD ($) Countries	Dec. 31, 2016 USD ($) Countries
Disaggregation of Revenue [Line Items]
Number of business segments \| Division	2
Maximum Percentage Revenue from One Geographic Segment	10.00%	10.00%	10.00%
Number of Countries Exceed Revenue Threshold \| Countries	1	1	1
Revenue	$ 23,995	$ 20,620	$ 15,887
North America [Member]
Disaggregation of Revenue [Line Items]
Revenue	14,431	11,564	6,770
Latin America [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,065	2,116	1,860
Europe/Africa/CIS [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,945	2,781	2,993
Middle East/Asia [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 4,554	4,159	4,264
Minimum
Disaggregation of Revenue [Line Items]
Revenue, Performance Obligation, Description of Payment Terms	P20D
Maximum
Disaggregation of Revenue [Line Items]
Revenue, Performance Obligation, Description of Payment Terms	P60D
Completion and Production
Disaggregation of Revenue [Line Items]
Revenue	$ 15,973	13,077	8,882
Drilling and Evaluation
Disaggregation of Revenue [Line Items]
Revenue	$ 8,022	$ 7,543	$ 7,005
Sales Revenue, Net [Member] \| UNITED STATES
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	58.00%	53.00%	41.00%

The maximum percentage of revenue from one geographic segment for the periods presented.

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- Definition

The number of business segments into which the company's operations are divided.

+ References

No definition available.

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- Definition

The number of countries that exceed the revenue threshold of 10%.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

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- Definition

Description of payment terms in contract with customer. Includes, but is not limited to, timing of payment, existence of financing component, variability of consideration and constraint on variable consideration.

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