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Investments (Tables) | 3 Months Ended
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Nov. 30, 2017
Investments [Abstract] |
Investment Holdings, Schedule of Investments [Table Text Block] |
| November 30, 2017 |  | August 31, 2017
| (Dollars in thousands)
Equity method investments: |  |  |
CF Industries Nitrogen, LLC | $ | 2,776,412 |  |  | $ | 2,756,076 |
Ventura Foods, LLC | 350,602 |  |  | 347,016 |
Ardent Mills, LLC | 209,926 |  |  | 206,529 |
TEMCO, LLC | 39,235 |  |  | 41,323 |
Other equity method investments | 265,621 |  |  | 268,444 |
Cost method investments | 135,204 |  |  | 131,605 |
Total investments | $ | 3,777,000 |  |  | $ | 3,750,993 |

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