Commitments and Contingencies - Steel Manufacturing Operations (Details) T in Thousands	May 31, 2020 USD ($) T	Aug. 31, 2019 USD ($)
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	$ 54,010,000	$ 51,799,000
Steel Manufacturing Operations
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	$ 0	$ 0
Permitted Annual Production Capacity \| T	950

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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