Revenues from Contracts with Customers - Additional Information (Detail)
$ in Millions
Oct. 31, 2019
|Revenue From Contract With Customer [Abstract]|
|Transaction price allocated to performance obligations||$ 30.8|
No definition available.
Amount of transaction price allocated to performance obligation that has not been recognized as revenue.
Reference 1: http://www.xbrl.org/2003/role/disclosureRef