Equities - Narrative (Details) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
|
Aug. 31, 2026
USD ($)
pools
|
Aug. 31, 2025
USD ($)
|
Aug. 31, 2024
USD ($)
|
|
| Equity [Abstract] | |||
| Total patronage refunds | $ 486,300 | ||
| Estimated qualified equity distributions | 306,300 | ||
| Estimated nonqualified equity distributions | $ 30,000 | ||
| Earnings from patronage business allocated to capital reserves (as a percent) | 35.00% | 35.00% | 10.00% |
| Capital equity certificates, number of pools | pools | 2 | ||
| Equity redemptions, age | 70 years | ||
| Estimated future distributions for equity redemptions | $ 150,000 | ||
| Authorization for additional payments for equity redemptions | $ 15,000 | ||
| Previously authorized distributions for equity redemptions | 90,000 | ||
| Redemptions of equities | 100,433 | 287,683 | $ 355,925 |
| Preferred stock dividends paid | $ 168,668 | $ 168,668 | $ 168,668 |