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Equities (Tables) | 12 Months Ended
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Aug. 31, 2024
Equity [Abstract] |
Schedule of Stock by Class [Table Text Block] | The following is a summary of our outstanding preferred stock as of August 31, 2024, all shares of which are listed on the Global Select Market of The Nasdaq:
|  | Nasdaq Symbol |  | Issuance Date |  | Shares Outstanding |  | Redemption Value |  | Net Proceeds (a) |  | Dividend Rate (b) (c) |  | Dividend Payment Frequency |  | Redeemable Beginning (d)
|  |  |  |  |  |  |  | (Dollars in millions) |  |  |  |  |  |
8% Cumulative Redeemable |  | CHSCP |  | (e) |  | 12,272,003 |  |  | $ | 306.8 |  |  | $ | 311.2 |  |  | 8.00 | % |  | Quarterly |  | 7/18/2023
Class B Cumulative Redeemable, Series 1 |  | CHSCO |  | (f) |  | 21,459,066 |  |  | 536.5 |  |  | 569.3 |  |  | 7.875 | % |  | Quarterly |  | 9/26/2023
Class B Reset Rate Cumulative Redeemable, Series 2 |  | CHSCN |  | 3/11/2014 |  | 16,800,000 |  |  | 420.0 |  |  | 406.2 |  |  | 7.10 | % |  | Quarterly |  | 3/31/2024
Class B Reset Rate Cumulative Redeemable, Series 3 |  | CHSCM |  | 9/15/2014 |  | 19,700,000 |  |  | 492.5 |  |  | 476.7 |  |  | 6.75 | % |  | Quarterly |  | 9/30/2024
Class B Cumulative Redeemable, Series 4 |  | CHSCL |  | 1/21/2015 |  | 20,700,000 |  |  | 517.5 |  |  | 501.0 |  |  | 7.50 | % |  | Quarterly |  | 1/21/2025
(a) Includes patron equities redeemed with preferred stock. (b) The Class B Reset Rate Cumulative Redeemable Preferred Stock, Series 2 accumulated dividends at a rate of 7.10% per year until March 31, 2024, and subsequently fixed at a rate of 7.10%, based on the terms of the contract and application of the Adjustable Rate (LIBOR) Act. (c) The Class B Reset Rate Cumulative Redeemable Preferred Stock, Series 3 accumulated dividends at a rate of 6.75% per year until September 30, 2024, and subsequently fixed at a rate of 6.75%,based on the terms of the contract and application of the Adjustable Rate (LIBOR) Act. (d) All series of preferred stock are redeemable for cash at our option, in whole or in part, at a per share price equal to the per share liquidation preference of $25.00 per share, plus all dividends accumulated and unpaid on that share to and including the date of redemption, beginning on the dates set forth in this column. (e) The 8% Cumulative Redeemable Preferred Stock was issued at various times from 2003 through 2010. (f) Shares of Class B Cumulative Redeemable Preferred Stock, Series 1 were issued on September 26, 2013; August 25, 2014; March 31, 2016; and March 30, 2017. The following is a summary of dividends per share by series of preferred stock for the years ended August 31, 2024 and 2023:
|  |  | Years Ended August 31,
| Nasdaq Symbol |  | 2024 |  | 2023
|  |  | (Dollars per share)
8% Cumulative Redeemable | CHSCP |  | $ | 2.00 |  |  | $ | 2.00 |
Class B Cumulative Redeemable, Series 1 | CHSCO |  | 1.97 |  |  | 1.97 |
Class B Reset Rate Cumulative Redeemable, Series 2 | CHSCN |  | 1.78 |  |  | 1.78 |
Class B Reset Rate Cumulative Redeemable, Series 3 | CHSCM |  | 1.69 |  |  | 1.69 |
Class B Cumulative Redeemable, Series 4 | CHSCL |  | 1.88 |  |  | 1.88 |
Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component | Changes in accumulated other comprehensive income (loss) by component, for the years ended August 31, 2024, 2023 and 2022 are as follows:
| Pension and Other Postretirement Benefits |  | Cash Flow Hedges |  | Foreign Currency Translation Adjustment |  | Total
| (Dollars in thousands)
Balance as of August 31, 2021, net of tax | $ | (141,385) |  |  | $ | 4,824 |  |  | $ | (79,830) |  |  | $ | (216,391) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |
Amounts before reclassifications | (52,163) |  |  | (2,161) |  |  | (15,809) |  |  | (70,133) |
Amounts reclassified out | 22,240 |  |  | 7,455 |  |  | — |  |  | 29,695 |
Total other comprehensive income (loss), before tax | (29,923) |  |  | 5,294 |  |  | (15,809) |  |  | (40,438) |
Tax effect | 2,668 |  |  | (1,275) |  |  | 101 |  |  | 1,494 |
Other comprehensive income (loss), net of tax | (27,255) |  |  | 4,019 |  |  | (15,708) |  |  | (38,944) |
Balance as of August 31, 2022, net of tax | (168,640) |  |  | 8,843 |  |  | (95,538) |  |  | (255,335) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |
Amounts before reclassifications | (13,596) |  |  | (25,024) |  |  | 1,829 |  |  | (36,791) |
Amounts reclassified out | 93 |  |  | 16,044 |  |  | — |  |  | 16,137 |
Total other comprehensive income (loss), before tax | (13,503) |  |  | (8,980) |  |  | 1,829 |  |  | (20,654) |
Tax effect | 8,218 |  |  | 2,169 |  |  | 207 |  |  | 10,594 |
Other comprehensive income (loss), net of tax | (5,285) |  |  | (6,811) |  |  | 2,036 |  |  | (10,060) |
Balance as of August 31, 2023, net of tax | (173,925) |  |  | 2,032 |  |  | (93,502) |  |  | (265,395) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |
Amounts before reclassifications | (29,445) |  |  | 14,950 |  |  | (10,249) |  |  | (24,744) |
Amounts reclassified out | 180 |  |  | (15,287) |  |  | 1,227 |  |  | (13,880) |
Total other comprehensive loss, before tax | (29,265) |  |  | (337) |  |  | (9,022) |  |  | (38,624) |
Tax effect | 7,217 |  |  | 82 |  |  | 178 |  |  | 7,477 |
Other comprehensive loss, net of tax | (22,048) |  |  | (255) |  |  | (8,844) |  |  | (31,147) |
Balance as of August 31, 2024, net of tax | $ | (195,973) |  |  | $ | 1,777 |  |  | $ | (102,346) |  |  | $ | (296,542) |

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