TECHNICAL PACKAGING DIVESTITURE (Details) $ in Thousands	3 Months Ended			6 Months Ended
	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($) item	Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)
TECHNICAL PACKAGING DIVESTITURE
Net proceeds from sale of discontinued operations				$ 183,997
After-tax gain on the sale of business				76,614
Assets:
Current assets						$ 25,314
Liabilities:
Current liabilities						11,517
Other liabilities						3,999
Disposed of by Sale | Technical Packaging Business
TECHNICAL PACKAGING DIVESTITURE
Net sales	$ 0		$ 22,700	$ 16,500	$ 41,900
Net proceeds from sale of discontinued operations		$ 184,000
After-tax gain on the sale of business		$ 76,600
Assets:
Accounts receivable, net						15,700
Contract assets, net						5,100
Inventories						3,900
Other current assets						600
Current assets						25,300
Property, plant & equipment, net						33,600
Intangible assets, net						11,400
Goodwill						19,000
Other assets						3,400
Total assets						92,700
Liabilities:
Accounts payable						7,600
Accrued expenses and other current liabilities						3,900
Current liabilities						11,500
Other liabilities						4,000
Total liabilities						$ 15,500
Disposed of by Sale | Technical Packaging Business | Sonoco Products Company
TECHNICAL PACKAGING DIVESTITURE
Number of wholly-owned subsidiaries of the buyers | item		2