BUSINESS SEGMENT INFORMATION - Properties, Plants and Equipment, Net by Geographical Area (Details) - USD ($) $ in Millions	Apr. 30, 2019	Oct. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	$ 5,510.4	$ 3,194.8
Total properties, plants and equipment, net	1,685.4	1,191.9
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total properties, plants and equipment, net	1,305.7	796.3
Europe, Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Total properties, plants and equipment, net	260.7	276.9
Asia Pacific and Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total properties, plants and equipment, net	119.0	118.7
Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	5,258.2	2,938.4
Operating Segments | Rigid Industrial Packaging & Services
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	2,069.2	1,963.0
Operating Segments | Paper Packaging & Services
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	2,683.8	474.3
Operating Segments | Flexible Products & Services
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	155.5	153.9
Operating Segments | Land Management
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	349.7	347.2
Corporate and other
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	$ 252.2	$ 256.4