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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Schedule of Total Revenue from Major Customers (Parenthetical) (Detail) - Operating Segment - Oilfield Technologies and Services - Customer Concentration Risk - Sales Revenue, Net	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Major Customer A
Revenue, Major Customer [Line Items]
Concentration risk percentage		12.70%
Major Customer A \| Maximum
Revenue, Major Customer [Line Items]
Concentration risk percentage		10.00%
Major Customer B
Revenue, Major Customer [Line Items]
Concentration risk percentage		13.70%
Major Customer B \| Maximum
Revenue, Major Customer [Line Items]
Concentration risk percentage		10.00%
Major Customer C
Revenue, Major Customer [Line Items]
Concentration risk percentage	26.00%
Major Customer C \| Maximum
Revenue, Major Customer [Line Items]
Concentration risk percentage	10.00%