BUSINESS SEGMENT INFORMATION - Geographic Area (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024
Segment Reporting Information [Line Items]
Total net sales	$ 1,385.7	$ 1,371.0	$ 2,651.5	$ 2,576.8
Customized Polymer Solutions
Segment Reporting Information [Line Items]
Total net sales	329.3	285.6	624.4	513.6
Durable Metal Solutions
Segment Reporting Information [Line Items]
Total net sales	378.9	413.7	721.1	784.2
Sustainable Fiber Solutions
Segment Reporting Information [Line Items]
Total net sales	599.1	580.1	1,160.5	1,108.9
Integrated Solutions
Segment Reporting Information [Line Items]
Total net sales	78.4	91.6	145.5	170.1
United States
Segment Reporting Information [Line Items]
Total net sales	861.8	857.5	1,650.6	1,621.3
United States \| Customized Polymer Solutions
Segment Reporting Information [Line Items]
Total net sales	143.5	134.9	269.3	248.0
United States \| Durable Metal Solutions
Segment Reporting Information [Line Items]
Total net sales	72.1	84.6	135.2	156.5
United States \| Sustainable Fiber Solutions
Segment Reporting Information [Line Items]
Total net sales	587.7	566.6	1,137.7	1,083.8
United States \| Integrated Solutions
Segment Reporting Information [Line Items]
Total net sales	58.5	71.4	108.4	133.0
Europe, Middle East and Africa
Segment Reporting Information [Line Items]
Total net sales	370.1	355.5	690.8	650.1
Europe, Middle East and Africa \| Customized Polymer Solutions
Segment Reporting Information [Line Items]
Total net sales	134.3	109.5	251.0	193.8
Europe, Middle East and Africa \| Durable Metal Solutions
Segment Reporting Information [Line Items]
Total net sales	223.6	233.7	417.6	435.0
Europe, Middle East and Africa \| Sustainable Fiber Solutions
Segment Reporting Information [Line Items]
Total net sales	0.2	0.2	0.5	0.3
Europe, Middle East and Africa \| Integrated Solutions
Segment Reporting Information [Line Items]
Total net sales	12.0	12.1	21.7	21.0
Asia Pacific and Other Americas
Segment Reporting Information [Line Items]
Total net sales	153.8	158.0	310.1	305.4
Asia Pacific and Other Americas \| Customized Polymer Solutions
Segment Reporting Information [Line Items]
Total net sales	51.5	41.2	104.1	71.8
Asia Pacific and Other Americas \| Durable Metal Solutions
Segment Reporting Information [Line Items]
Total net sales	83.2	95.4	168.3	192.7
Asia Pacific and Other Americas \| Sustainable Fiber Solutions
Segment Reporting Information [Line Items]
Total net sales	11.2	13.3	22.3	24.8
Asia Pacific and Other Americas \| Integrated Solutions
Segment Reporting Information [Line Items]
Total net sales	$ 7.9	$ 8.1	$ 15.4	$ 16.1

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details

GREIF, INC 10-Q