Consolidation of Variable Interest Entities - Total Net Assets of Flexible Packaging JV (Detail) - USD ($) $ in Millions	Apr. 30, 2018	Oct. 31, 2017	Apr. 30, 2017	Oct. 31, 2016
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 108.2	$ 142.3	$ 87.0	$ 103.7
Trade accounts receivable, less allowance of $1.0 in 2018 and $2.2 in 2017	463.4	447.0
Properties, plants and equipment, net	1,189.9	1,188.4
Total Assets	50.9	50.9
Accounts payable	395.7	399.2
Total Liabilities	43.3	43.3
Allowance of trade accounts receivable	7.0	8.9
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Cash and cash equivalents	22.8	14.4
Trade accounts receivable, less allowance of $1.0 in 2018 and $2.2 in 2017	56.8	52.5
Inventories	59.9	53.3
Properties, plants and equipment, net	30.2	31.2
Other assets	27.2	25.8
Total Assets	196.9	177.2
Accounts payable	34.0	33.8
Other liabilities	24.9	30.2
Total Liabilities	58.9	64.0
Allowance of trade accounts receivable	$ 1.0	$ 2.2