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Equities (Tables) | 12 Months Ended
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Aug. 31, 2023
Equity [Abstract] |
Schedule of Stock by Class [Table Text Block] | The following is a summary of our outstanding preferred stock as of August 31, 2023, all shares of which are listed and traded 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 accumulates dividends at a rate of 7.10% per year until March 31, 2024, and then at a rate equal to the three-month benchmark interest rate plus 4.298%, not to exceed 8.00% per annum, subsequent to March 31, 2024. (c) The Class B Reset Rate Cumulative Redeemable Preferred Stock, Series 3 accumulates dividends at a rate of 6.75% per year until September 30, 2024, and then at a rate equal to the three-month benchmark interest rate plus 4.155%, not to exceed 8.00% per annum, subsequent to September 30, 2024. (d) Preferred stock is 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, 2023 and 2022:
|  |  | Years Ended August 31,
| Nasdaq Symbol |  | 2023 |  | 2022
|  |  | (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, 2023, 2022 and 2021 are as follows:
| Pension and Other Postretirement Benefits |  | Cash Flow Hedges |  | Foreign Currency Translation Adjustment |  | Total
| (Dollars in thousands)
Balance as of August 31, 2020, net of tax | $ | (159,680) |  |  | $ | 10,886 |  |  | $ | (85,130) |  |  | $ | (233,924) |
Other comprehensive income (loss), before tax: |  |  |  |  |  |  |
Amounts before reclassifications | 4,048 |  |  | 11,700 |  |  | 5,573 |  |  | 21,321 |
Amounts reclassified out | 20,256 |  |  | (19,753) |  |  | — |  |  | 503 |
Total other comprehensive income (loss), before tax | 24,304 |  |  | (8,053) |  |  | 5,573 |  |  | 21,824 |
Tax effect | (6,009) |  |  | 1,991 |  |  | (273) |  |  | (4,291) |
Other comprehensive income (loss), net of tax | 18,295 |  |  | (6,062) |  |  | 5,300 |  |  | 17,533 |
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) |

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