Other Noncurrent Liabilities Footnote (Details)		12 Months Ended
Oct. 31, 2019	Dec. 31, 2019
Total liabilities
Concentration Risk [Line Items]
Benchmark for individual components of noncurrent liabilities, percentage		5.00%
Lithium Hydroxide Conversion Assets
Concentration Risk [Line Items]
Ownership percentage	40.00%	40.00%

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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