Organization, Basis of Presentation and Significant Accounting Policies	6 Months Ended
Feb. 28, 2017
Accounting Policies [Abstract]
Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies	Organization, Basis of Presentation and Significant Accounting Policies Basis of Presentation The unaudited Consolidated Balance Sheet as of February 28, 2017, the Consolidated Statements of Operations for the three and six months ended February 28, 2017, and February 29, 2016, the Consolidated Statements of Comprehensive Income for the three and six months ended February 28, 2017, and February 29, 2016, and the Consolidated Statements of Cash Flows for the six months ended February 28, 2017, and February 29, 2016, reflect in the opinion of our management, all normal recurring adjustments necessary for a fair statement of the financial position, results of operations and cash flows for the interim periods presented. The results of operations and cash flows for interim periods are not necessarily indicative of results for a full fiscal year because of, among other things, the seasonal nature of our businesses. Our Consolidated Balance Sheet data as of August 31, 2016, has been derived from our audited consolidated financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America ("GAAP"). The notes to our consolidated financial statements make reference to our Energy, Ag, Nitrogen Production and Foods reportable segments, as well as our Corporate and Other category, which represents an aggregation of individually immaterial operating segments. The Nitrogen Production reportable segment resulted from our investment in CF Industries Nitrogen, LLC ("CF Nitrogen") in February 2016. The Foods segment resulted from our investment in Ventura Foods, LLC ("Ventura Foods") becoming a significant operating segment in fiscal 2016. See Note 9, Segment Reporting for more information. Our consolidated financial statements include the accounts of CHS and all of our wholly owned and majority owned subsidiaries. The effects of all significant intercompany transactions have been eliminated. These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto for the year ended August 31, 2016, included in our Annual Report on Form 10-K, filed with the Securities and Exchange Commission (the "SEC"). Recent Accounting Pronouncements Adopted In January 2017, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update ("ASU") No. 2017-04, Simplifying the Test for Goodwill Impairment. The amendments within this ASU eliminate Step 2 of the goodwill impairment test, which currently requires an entity to determine goodwill impairment by calculating the implied fair value of goodwill by hypothetically assigning the fair value of a reporting unit to all of its assets and liabilities as if that reporting unit had been acquired in a business combination. Under the amended standard, goodwill impairment will instead be measured using Step 1 of the goodwill impairment test with goodwill impairment being equal to the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying value of goodwill. This ASU was scheduled to be effective for us beginning September 1, 2020, for our fiscal year 2021 and for interim periods within that fiscal year. Early adoption is permitted for any goodwill impairment test performed on testing dates after January 1, 2017. As the amendments within ASU No. 2017-04 are meant to reduce the cost and complexity of evaluating goodwill for impairment, we do not expect the adoption of this ASU to have a material impact on our consolidated financial statements. We have elected to early adopt ASU No. 2017-04 and the amendments described therein will be applied prospectively to all future goodwill impairment tests performed on an interim or annual basis. In April 2015, the FASB issued ASU No. 2015-03, Interest-Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs, which simplifies the presentation of debt issuance costs. This ASU requires the presentation of debt issuance costs on the balance sheet as a deduction from the carrying amount of the related debt liability instead of a deferred financing cost. This ASU was effective for us beginning September 1, 2016, for our fiscal year 2017 and for interim periods within that fiscal year. As a result, $5.6 million of deferred issuance costs related to private placement debt and bank financing have been reclassified from other assets to long-term debt as of August 31, 2016. In August 2015, the FASB issued ASU No. 2015-15, Interest-Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements, which codifies an SEC staff announcement that entities are permitted to defer and present debt issuance costs related to line of credit arrangements as assets. ASU No. 2015-15 was effective immediately. At August 31, 2016, we had unamortized deferred financing costs related to our line of credit arrangements, and we will continue to present debt issuance costs related to line of credit arrangements as an asset in our Consolidated Balance Sheets. Not Yet Adopted In March 2017, the FASB issued ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Costs and Net Postretirement Benefit Cost. This ASU is intended to improve the presentation of net periodic pension cost and net periodic postretirement benefit cost. This ASU is effective for us beginning September 1, 2018, for our fiscal year 2019 and for interim periods within that fiscal year. Early adoption is permitted as of the beginning of an annual period for which interim financial statements have not been issued or made available for issuance. We are currently evaluating the impact the adoption will have on our consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-01, Clarifying the Definition of a Business. The amendments within this ASU narrow the existing definition of a business and provide a more robust framework for evaluating whether a transaction should be accounted for as an acquisition (or disposal) of assets or a business. The definition of a business impacts various areas of accounting, including acquisitions, disposals and goodwill. Under the new guidance, fewer acquisitions are expected to be considered businesses. This ASU is effective for us beginning September 1, 2018, for our fiscal year 2019 and for interim periods within that fiscal year. Early adoption is permitted and the guidance should be applied prospectively to transactions following the adoption date. We are currently evaluating the impact the adoption will have on our consolidated financial statements. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. This ASU is intended to reduce diversity in practice by adding or clarifying guidance on classification and presentation of changes in restricted cash on the statement of cash flows. This ASU is effective for us beginning September 1, 2018, for our fiscal year 2019 and for interim periods within that fiscal year. Early adoption is permitted, including in an interim period. The amendments in this ASU should be applied retrospectively to all periods presented. We are currently evaluating the impact the adoption will have on our consolidated financial statements. In October 2016, the FASB issued ASU No. 2016-16, Income Taxes - Intra-Entity Transfers of Assets Other Than Inventory (Topic 740). This ASU is intended to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory by requiring an entity to recognize the income tax consequences when a transfer occurs, instead of when an asset is sold to an outside party. The amendments in this ASU should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. This ASU is effective for us beginning September 1, 2018, for our fiscal year 2019 and for interim periods within that fiscal year. Early adoption is permitted as of the beginning of an annual reporting period for which interim or annual financial statements have not been issued. We are currently evaluating the impact the adoption will have on our consolidated financial statements. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU is intended to reduce existing diversity in practice in how certain cash receipts and payments are presented and classified in the statement of cash flows. This ASU is effective for us beginning September 1, 2018, for our fiscal year 2019 and for interim periods within that fiscal year. Early adoption is permitted, including in an interim period. We are currently evaluating the impact the adoption will have on our consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The amendments in this ASU introduce a new approach, based on expected losses, to estimate credit losses on certain types of financial instruments. This ASU is intended to provide financial statement users with more decision-useful information about the expected credit losses associated with most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held-to-maturity debt securities, net investments in leases, and off-balance-sheet credit exposures. Entities are required to apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. This ASU is effective for us beginning September 1, 2020, for our fiscal year 2021 and for interim periods within that fiscal year. We are currently evaluating the impact the adoption will have on our consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which replaces the existing guidance in Accounting Standards Codification ("ASC") 840 - Leases. The amendments within this ASU introduce a lessee model requiring entities to recognize assets and liabilities for most leases, but continue recognizing the associated expenses in a manner similar to existing accounting guidance. This ASU does not make fundamental changes to existing lessor accounting; however, it does modify what constitutes a sales-type or direct financing lease and the related accounting, and aligns a number of the underlying principles with those of the new revenue standard, ASU No. 2014-09. The guidance also eliminates existing real estate-specific provisions and requires expanded qualitative and quantitative disclosures. Entities are required to apply the standard’s provisions using a modified retrospective approach at the beginning of the earliest comparative period presented in the year of adoption. This ASU is effective for us beginning September 1, 2019, for our fiscal year 2020 and for interim periods within that fiscal year. We are currently evaluating the impact the adoption will have on our consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers. The amendments within this ASU provide a single comprehensive model to be used in the accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This ASU includes a five step model for the recognition of revenue, including (1) identifying the contract with a customer, (2) identifying the performance obligations in the contract, (3) determining the transaction price, (4) allocating the transaction price to the performance obligations, and (5) recognizing revenue when (or as) an entity satisfies a performance obligation. This ASU also specifies the accounting for certain costs to obtain or fulfill a contract with a customer and requires expanded disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In August 2015, the FASB issued ASU No. 2015-14 delaying the effective date of adoption for CHS to September 1, 2018. The FASB issued four subsequent ASUs in 2016 containing implementation guidance related to ASU No. 2014-09, including: ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), which is intended to improve the operability and understandability of the implementation guidance on principal versus agent considerations; ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, which is intended to clarify two aspects of Topic 606: identifying performance obligations and the licensing implementation guidance; ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients, which contains certain provision and practical expedients in response to identified implementation issues; and ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, which contains certain corrections and clarifications to increase stakeholders’ awareness of the proposals and to expedite improvements. ASU No. 2014-09 permits the use of either a full or modified retrospective method upon adoption. Although early application as of the original date is permitted, we expect to adopt ASU No. 2014-09 and the related ASUs on September 1, 2018, in the first quarter of fiscal 2019. We are continuing to evaluate the effect this guidance will have on our consolidated financial statements, including potential impacts on the timing of revenue recognition and additional information that may be necessary for expanded disclosures regarding revenue. We have completed an initial assessment of our revenue streams and are currently evaluating the quantitative and qualitative impacts of the new standard on our businesses. We expect to complete our evaluation by the end of fiscal 2017, which will allow us to select an adoption method and determine the impact that the new standard will have on our businesses.

Organization, Basis of Presentation and Significant Accounting Policies

Basis of Presentation

The unaudited Consolidated Balance Sheet as of February 28, 2017, the Consolidated Statements of Operations for the three and six months ended February 28, 2017, and February 29, 2016, the Consolidated Statements of Comprehensive Income for the three and six months ended February 28, 2017, and February 29, 2016, and the Consolidated Statements of Cash Flows for the six months ended February 28, 2017, and February 29, 2016, reflect in the opinion of our management, all normal recurring adjustments necessary for a fair statement of the financial position, results of operations and cash flows for the interim periods presented. The results of operations and cash flows for interim periods are not necessarily indicative of results for a full fiscal year because of, among other things, the seasonal nature of our businesses. Our Consolidated Balance Sheet data as of August 31, 2016, has been derived from our audited consolidated financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America ("GAAP").

The notes to our consolidated financial statements make reference to our Energy, Ag, Nitrogen Production and Foods reportable segments, as well as our Corporate and Other category, which represents an aggregation of individually immaterial operating segments. The Nitrogen Production reportable segment resulted from our investment in CF Industries Nitrogen, LLC ("CF Nitrogen") in February 2016. The Foods segment resulted from our investment in Ventura Foods, LLC ("Ventura Foods") becoming a significant operating segment in fiscal 2016. See Note 9, Segment Reporting for more information.

Our consolidated financial statements include the accounts of CHS and all of our wholly owned and majority owned subsidiaries. The effects of all significant intercompany transactions have been eliminated.

These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto for the year ended August 31, 2016, included in our Annual Report on Form 10-K, filed with the Securities and Exchange Commission (the "SEC").

Recent Accounting Pronouncements

Adopted

In January 2017, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update ("ASU") No. 2017-04, Simplifying the Test for Goodwill Impairment. The amendments within this ASU eliminate Step 2 of the goodwill impairment test, which currently requires an entity to determine goodwill impairment by calculating the implied fair value of goodwill by hypothetically assigning the fair value of a reporting unit to all of its assets and liabilities as if that reporting unit had been acquired in a business combination. Under the amended standard, goodwill impairment will instead be measured using Step 1 of the goodwill impairment test with goodwill impairment being equal to the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying value of goodwill. This ASU was scheduled to be effective for us beginning September 1, 2020, for our fiscal year 2021 and for interim periods within that fiscal year. Early adoption is permitted for any goodwill impairment test performed on testing dates after January 1, 2017. As the amendments within ASU No. 2017-04 are meant to reduce the cost and complexity of evaluating goodwill for impairment, we do not expect the adoption of this ASU to have a material impact on our consolidated financial statements. We have elected to early adopt ASU No. 2017-04 and the amendments described therein will be applied prospectively to all future goodwill impairment tests performed on an interim or annual basis.

In April 2015, the FASB issued ASU No. 2015-03, Interest-Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs, which simplifies the presentation of debt issuance costs. This ASU requires the presentation of debt issuance costs on the balance sheet as a deduction from the carrying amount of the related debt liability instead of a deferred financing cost. This ASU was effective for us beginning September 1, 2016, for our fiscal year 2017 and for interim periods within that fiscal year. As a result, $5.6 million of deferred issuance costs related to private placement debt and bank financing have been reclassified from other assets to long-term debt as of August 31, 2016.

In August 2015, the FASB issued ASU No. 2015-15, Interest-Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements, which codifies an SEC staff announcement that entities are permitted to defer and present debt issuance costs related to line of credit arrangements as assets. ASU No. 2015-15 was effective immediately. At August 31, 2016, we had unamortized deferred financing costs related to our line of credit arrangements, and we will continue to present debt issuance costs related to line of credit arrangements as an asset in our Consolidated Balance Sheets.

Not Yet Adopted

In March 2017, the FASB issued ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Costs and Net Postretirement Benefit Cost. This ASU is intended to improve the presentation of net periodic pension cost and net periodic postretirement benefit cost. This ASU is effective for us beginning September 1, 2018, for our fiscal year 2019 and for interim periods within that fiscal year. Early adoption is permitted as of the beginning of an annual period for which interim financial statements have not been issued or made available for issuance. We are currently evaluating the impact the adoption will have on our consolidated financial statements.

In January 2017, the FASB issued ASU No. 2017-01, Clarifying the Definition of a Business. The amendments within this ASU narrow the existing definition of a business and provide a more robust framework for evaluating whether a transaction should be accounted for as an acquisition (or disposal) of assets or a business. The definition of a business impacts various areas of accounting, including acquisitions, disposals and goodwill. Under the new guidance, fewer acquisitions are expected to be considered businesses. This ASU is effective for us beginning September 1, 2018, for our fiscal year 2019 and for interim periods within that fiscal year. Early adoption is permitted and the guidance should be applied prospectively to transactions following the adoption date. We are currently evaluating the impact the adoption will have on our consolidated financial statements.

In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. This ASU is intended to reduce diversity in practice by adding or clarifying guidance on classification and presentation of changes in restricted cash on the statement of cash flows. This ASU is effective for us beginning September 1, 2018, for our fiscal year 2019 and for interim periods within that fiscal year. Early adoption is permitted, including in an interim period. The amendments in this ASU should be applied retrospectively to all periods presented. We are currently evaluating the impact the adoption will have on our consolidated financial statements.

In October 2016, the FASB issued ASU No. 2016-16, Income Taxes - Intra-Entity Transfers of Assets Other Than Inventory (Topic 740). This ASU is intended to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory by requiring an entity to recognize the income tax consequences when a transfer occurs, instead of when an asset is sold to an outside party. The amendments in this ASU should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. This ASU is effective for us beginning September 1, 2018, for our fiscal year 2019 and for interim periods within that fiscal year. Early adoption is permitted as of the beginning of an annual reporting period for which interim or annual financial statements have not been issued. We are currently evaluating the impact the adoption will have on our consolidated financial statements.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU is intended to reduce existing diversity in practice in how certain cash receipts and payments are presented and classified in the statement of cash flows. This ASU is effective for us beginning September 1, 2018, for our fiscal year 2019 and for interim periods within that fiscal year. Early adoption is permitted, including in an interim period. We are currently evaluating the impact the adoption will have on our consolidated financial statements.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The amendments in this ASU introduce a new approach, based on expected losses, to estimate credit losses on certain types of financial instruments. This ASU is intended to provide financial statement users with more decision-useful information about the expected credit losses associated with most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held-to-maturity debt securities, net investments in leases, and off-balance-sheet credit exposures. Entities are required to apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. This ASU is effective for us beginning September 1, 2020, for our fiscal year 2021 and for interim periods within that fiscal year. We are currently evaluating the impact the adoption will have on our consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which replaces the existing guidance in Accounting Standards Codification ("ASC") 840 - Leases. The amendments within this ASU introduce a lessee model requiring entities to recognize assets and liabilities for most leases, but continue recognizing the associated expenses in a manner similar to existing accounting guidance. This ASU does not make fundamental changes to existing lessor accounting; however, it does modify what constitutes a sales-type or direct financing lease and the related accounting, and aligns a number of the underlying principles with those of the new revenue standard, ASU No. 2014-09. The guidance also eliminates existing real estate-specific provisions and requires expanded qualitative and quantitative disclosures. Entities are required to apply the standard’s provisions using a modified retrospective approach at the beginning of the earliest comparative period presented in the year of adoption. This ASU is effective for us beginning September 1, 2019, for our fiscal year 2020 and for interim periods within that fiscal year. We are currently evaluating the impact the adoption will have on our consolidated financial statements.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers. The amendments within this ASU provide a single comprehensive model to be used in the accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This ASU includes a five step model for the recognition of revenue, including (1) identifying the contract with a customer, (2) identifying the performance obligations in the contract, (3) determining the transaction price, (4) allocating the transaction price to the performance obligations, and (5) recognizing revenue when (or as) an entity satisfies a performance obligation. This ASU also specifies the accounting for certain costs to obtain or fulfill a contract with a customer and requires expanded disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In August 2015, the FASB issued ASU No. 2015-14 delaying the effective date of adoption for CHS to September 1, 2018. The FASB issued four subsequent ASUs in 2016 containing implementation guidance related to ASU No. 2014-09, including: ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), which is intended to improve the operability and understandability of the implementation guidance on principal versus agent considerations; ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, which is intended to clarify two aspects of Topic 606: identifying performance obligations and the licensing implementation guidance; ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients, which contains certain provision and practical expedients in response to identified implementation issues; and ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, which contains certain corrections and clarifications to increase stakeholders’ awareness of the proposals and to expedite improvements. ASU No. 2014-09 permits the use of either a full or modified retrospective method upon adoption. Although early application as of the original date is permitted, we expect to adopt ASU No. 2014-09 and the related ASUs on September 1, 2018, in the first quarter of fiscal 2019. We are continuing to evaluate the effect this guidance will have on our consolidated financial statements, including potential impacts on the timing of revenue recognition and additional information that may be necessary for expanded disclosures regarding revenue. We have completed an initial assessment of our revenue streams and are currently evaluating the quantitative and qualitative impacts of the new standard on our businesses. We expect to complete our evaluation by the end of fiscal 2017, which will allow us to select an adoption method and determine the impact that the new standard will have on our businesses.