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
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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-Section 50
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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

Accrued Expenses Accrued Expenses Footnote (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Concentration Risk [Line Items]
Acquisition and integration related costs		$ 20,684	$ 19,377	$ 33,954
Total Current Liabilities
Concentration Risk [Line Items]
Benchmark for individual components of accrued expenses, percentage		5.00%
Lithium Hydroxide Conversion Assets
Concentration Risk [Line Items]
Ownership percentage	40.00%	40.00%
Mineral Resources Limited Wodgina Project
Concentration Risk [Line Items]
Ownership percentage	60.00%	60.00%
Stamp duty tax \| Mineral Resources Limited Wodgina Project
Concentration Risk [Line Items]
Acquisition and integration related costs		$ 64,800