Equities Changes in Equity (Details) (USD $)
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3 Months Ended | 6 Months Ended | 3 Months Ended | 1 Months Ended | 9 Months Ended | 1 Months Ended | ||||||||||||
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Feb. 28, 2014
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Feb. 28, 2013
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Feb. 28, 2014
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Feb. 28, 2013
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Feb. 28, 2014
Patronage Refunds [Member]
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Feb. 28, 2013
Patronage Refunds [Member]
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Feb. 28, 2014
Capital equity certificates [Member]
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Feb. 28, 2013
Capital equity certificates [Member]
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Feb. 28, 2014
Capital Reserves [Member]
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Feb. 28, 2013
Capital Reserves [Member]
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Feb. 28, 2014
Noncontrolling Interest [Member]
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Feb. 28, 2013
Noncontrolling Interest [Member]
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Nov. 30, 2013
Class B Series 1 Cumulative Redeemable Preferred Stock [Member]
Preferred Stock [Member]
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Sep. 03, 2013
Class B Series 1 Cumulative Redeemable Preferred Stock [Member]
Preferred Stock [Member]
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Mar. 31, 2014
Subsequent Event [Member]
Class B Series 2 Cumulative Redeemable Preferred Stock [Member]
Preferred Stock [Member]
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May 31, 2014
Subsequent Event [Member]
Class B Series 2 Cumulative Redeemable Preferred Stock [Member]
Preferred Stock [Member]
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Mar. 31, 2014
London Interbank Offered Rate (LIBOR) [Member]
Subsequent Event [Member]
Class B Series 2 Cumulative Redeemable Preferred Stock [Member]
Preferred Stock [Member]
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Mar. 31, 2014
Maximum [Member]
London Interbank Offered Rate (LIBOR) [Member]
Subsequent Event [Member]
Class B Series 2 Cumulative Redeemable Preferred Stock [Member]
Preferred Stock [Member]
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Schedule of Capitalization, Equity [Line Items] | ||||||||||||||||||
Noncontrolling Interest, Decrease from Deconsolidation | $ (4,779,000) | |||||||||||||||||
Preferred Stock, Shares Outstanding | 11,319,175 | 16,800,000 | ||||||||||||||||
Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||||||||||||
Stockholders' Equity Attributable to Parent | 5,131,208,000 | 4,455,341,000 | ||||||||||||||||
Net income attributable to CHS Inc. | 260,069,000 | 275,086,000 | 502,255,000 | 618,793,000 | ||||||||||||||
Other comprehensive income (loss), net of tax | (8,565,000) | 2,254,000 | ||||||||||||||||
Patronage distribution | (840,494,000) | (975,732,000) | ||||||||||||||||
Equities retired | (79,656,000) | (179,369,000) | ||||||||||||||||
Dividends and equity retirement determination | 837,527,000 | 969,862,000 | 79,656,000 | 179,369,000 | (21,867,000) | (12,272,000) | ||||||||||||
Equities issued in business combinations | 45,000 | 18,236,000 | ||||||||||||||||
Preferred stock dividends | (18,153,000) | (12,272,000) | ||||||||||||||||
Accrued dividends and equities payable | 195,100,000 | (249,591,000) | ||||||||||||||||
Other, net | (9,000) | 7,022,000 | 680,000 | 1,087,000 | ||||||||||||||
Stockholders' Equity Attributable to Parent | 5,678,325,000 | 4,833,913,000 | 5,678,325,000 | 4,833,913,000 | ||||||||||||||
Stockholders' Equity Attributable to Noncontrolling Interest | 21,539,000 | 17,982,000 | ||||||||||||||||
Net income attributable to noncontrolling interests | 552,000 | 432,000 | 1,394,000 | 2,606,000 | ||||||||||||||
Stockholders' Equity Attributable to Noncontrolling Interest | 18,259,000 | 20,935,000 | 18,259,000 | 20,935,000 | ||||||||||||||
Distributions to noncontrolling interests | (575,000) | (740,000) | ||||||||||||||||
Preferred Stock, Redemption Amount | 283,000,000 | 420,000,000 | ||||||||||||||||
Proceeds from Issuance of Preferred Stock, net of Issuance Costs | $ 273,325,000 | $ 273,700,000 | $ 406,400,000 | |||||||||||||||
Preferred Stock, Dividend Rate, Percentage | 7.875% | 7.10% | 8.00% | |||||||||||||||
Preferred Stock, Basis Spread on Dividend Rate Percentage | 4.298% |