Subsequent Events (Detail) - Subsequent Event - Solectrac [Member] $ / shares in Units, shares in Millions, $ in Millions	Oct. 22, 2020 USD ($) $ / shares shares
Subsequent Event [Line Items]
Percentage of battery-powered electric tractors developed, assembled and distributed by counterparty	100.00%
Common shares
Subsequent Event [Line Items]
Number of common shares acquired | shares	1.4
Percentage of common shares acquired	15.00%
Total consideration per share | $ / shares	$ 0.91
Total consideration | $	$ 1.3