XML 126 R102.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes - Changes to Deferred Tax Asset Valuation Allowance (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2018
Oct. 31, 2017
Oct. 31, 2016
Operating Loss Carryforwards, Valuation Allowance Rollforward [Roll Forward]      
Valuation allowance at beginning of year $ 7.7 $ 5.4 $ 5.5
GCA acquisition 2.4 4.1 0.0
Other, net 1.8 (1.8) (0.1)
Valuation allowance at end of year $ 12.0 $ 7.7 $ 5.4