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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Name Accounting Standards Codification
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Risk Concentrations (Details) - Customer Concentration Risk	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue \| EOG Resources
Customer Concentrations
Concentration risk (as a percent)	24.00%	19.00%	20.00%	17.00%
Revenue \| Concho Resources, Inc.
Customer Concentrations
Concentration risk (as a percent)	16.00%	14.00%	18.00%	13.00%
Accounts Receivable
Customer Concentrations
Concentration risk (as a percent)			27.00%	25.00%