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Commitments and Contingencies (Tables)
 12 Months Ended
Aug. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Unrecorded unconditional purchase obligations disclosure As of August 31, 2021, minimum future payments required under long-term commitments that are noncancelable and that third parties have used to secure financing for facilities that will provide contracted goods, are as follows:
 Payments Due by Period
Total20222023202420252026Thereafter
 (Dollars in thousands)
Long-term unconditional purchase obligations $537,047 $83,044 $65,918 $65,650 $60,115 $57,951 $204,369