Summary of Significant Accounting Policies	9 Months Ended
Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Interim Financial Statements The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) for interim financial information and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair statement of the results for interim periods have been included. Results for interim periods should not be considered indicative of results for a full year. These interim Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and Notes thereto contained in the company’s Annual Report on Form 10-K for the year ended December 31, 2014, collectively referred to as the “2014 Annual Report”. The Consolidated Financial Statements include the accounts of the company and all of its subsidiaries in which a controlling interest is maintained, as well as variable interest entities (VIEs) for which DuPont is the primary beneficiary. Basis of Presentation Certain reclassifications of prior year's data have been made to conform to current year's presentation. On July 1, 2015, the company completed the separation of its Performance Chemicals segment through the spin-off of all of the issued and outstanding stock of The Chemours Company (Chemours). In accordance with GAAP, the financial position and results of operations of the Performance Chemicals segment are presented as discontinued operations and, as such, have been excluded from continuing operations and segment results for all periods presented. The sum of the individual earnings per share amounts from continuing operations and discontinued operations may not equal the total company earnings per share amounts due to rounding. The cash flows and comprehensive income related to the Performance Chemicals segment have not been segregated and are included in the Condensed Consolidated Statements of Cash Flows and Comprehensive Income, respectively, for all periods presented. Amounts related to the Performance Chemicals segment are consistently included or excluded from the Notes to the interim Consolidated Financial Statements based on the respective financial statement line item. See Note 2 for additional information. The company revised accumulated other comprehensive loss at January 1, 2013 to adjust for currency translation of $97 and pension settlement charges of $54 that should have been recorded in prior years. The revision resulted in a $151 decrease in accumulated other comprehensive loss with a corresponding reduction in reinvested earnings. The currency translation was related to an adjustment to the exchange rates used by a foreign subsidiary in the translation of the financial statements to U.S. dollar (USD) in prior years. See further discussion of the pension settlement charges in Note 13. The impact of these adjustments is not material to the company’s current or previously issued financial statements. The company’s cost structure is being impacted by the global, multi-year initiative to redesign its global organization and operating model to improve productivity and agility across all businesses and functions. Effective December 31, 2014, in order to better align to the transforming company’s organization and resulting cost structure, certain costs were reclassified from other operating charges to selling, general and administrative expenses. Prior year data have been reclassified to conform to current year presentation. Other operating charges primarily include, costs associated with the Performance Chemical separation, product claim charges and non-capitalizable costs associated with capital projects. Selling, general and administrative expense primarily includes selling and marketing expenses, commissions, functional costs, and business management expenses. Cost of goods sold primarily includes the cost of manufacture and delivery, ingredients or raw materials, direct salaries, wages and benefits and overhead. Foreign Currency Translation The company's worldwide operations utilize the USD or local currency as the functional currency, where applicable. The company identifies its separate and distinct foreign entities and groups the foreign entities into two categories: 1) extension of the parent (USD functional currency) and 2) self-contained (local functional currency). If a foreign entity does not clearly align with either category, factors are evaluated and a judgment is made to determine the functional currency. For foreign entities where the USD is the functional currency, all foreign currency-denominated asset and liability amounts are re-measured into USD at end-of-period exchange rates, except for inventories, prepaid expenses, property, plant and equipment, goodwill and other intangible assets, which are re-measured at historical rates. Foreign currency income and expenses are re-measured at average exchange rates in effect during the year, except for expenses related to balance sheet amounts re-measured at historical exchange rates. Exchange gains and losses arising from re-measurement of foreign currency-denominated monetary assets and liabilities are included in income in the period in which they occur. For foreign entities where the local currency is the functional currency, assets and liabilities denominated in local currencies are translated into USD at end-of-period exchange rates and the resultant translation adjustments are reported, net of their related tax effects, as a component of accumulated other comprehensive loss in equity. Assets and liabilities denominated in other than the local currency are re-measured into the local currency prior to translation into USD and the resultant exchange gains or losses are included in income in the period in which they occur. Income and expenses are translated into USD at average exchange rates in effect during the period. The company changes the functional currency of its separate and distinct foreign entities only when significant changes in economic facts and circumstances indicate clearly that the functional currency has changed. As a result of the separation of its Performance Chemicals segment, coupled with the company’s ongoing redesign initiative, the functional currency at certain of the company’s foreign entities is being re-evaluated which, in some cases, has resulted in a change in the foreign entities’ functional currency. Venezuelan Foreign Currency Venezuela is considered a highly inflationary economy under GAAP and the USD is the functional currency for the company's subsidiaries in Venezuela. The official exchange rate continues to be set through the National Center for Foreign Commerce (CENCOEX, previously CADIVI). Based on its evaluation of the restrictions and limitations affecting the availability of specific exchange rate mechanisms, management concluded in the second quarter of 2014 that the Alternative Currency Exchange System (SICAD 2) auction process would be the most likely mechanism available. As a result, in the second quarter of 2014, the company changed from the official exchange rate to the SICAD 2 exchange rate, which resulted in a charge of $58 recorded within other income, net in the company's interim Consolidated Income Statements for the nine months ended September 30, 2014. During the first quarter of 2015, the Venezuelan government enacted additional changes to the country’s foreign exchange systems including the introduction of the SIMADI (Foreign Exchange Marginal System) auction process. Management has concluded that the SIMADI auction process would be the most likely exchange mechanism available. As a result, effective in the first quarter of 2015, the company changed from the SICAD 2 to the SIMADI exchange rate, to re-measure its Bolivar Fuertes (VEF) denominated net monetary assets which resulted in a charge of $3 recorded within other income, net in the company's interim Consolidated Income Statements for the nine months ended September 30, 2015. The remaining net monetary assets and non-monetary assets are immaterial at September 30, 2015. Recent Accounting Pronouncements Accounting Pronouncements Implemented in 2015 In April 2014, the FASB issued authoritative guidance amending existing requirements for reporting discontinued operations. Under the new guidance, discontinued operations reporting is limited to disposal transactions that represent strategic shifts having a major effect on operations and financial results. The amended guidance also enhances disclosures and requires assets and liabilities of a discontinued operation to be classified as such for all periods presented in the financial statements. Public entities will apply the amended guidance prospectively to all disposals occurring within annual periods beginning on or after December 15, 2014 and interim periods within those years. The company adopted this standard on January 1, 2015. Due to the change in requirements for reporting discontinued operations described above, presentation and disclosures of disposal transactions after adoption may be different than under previous standards. New Accounting Pronouncements to be Implemented In May 2015, the FASB issued ASU No. 2015-07, Fair Value Measurement (Topic 820), Disclosures for Investments in Certain Entities that Calculate Net Asset Value per Share or its Equivalent. This guidance removes the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient. The guidance also removes the requirement to make certain disclosures for all investments that are eligible to be measured at fair value using the net asset value per share practical expedient. Rather, those disclosures are limited to investments for which the entity has elected to measure the fair value using that practical expedient. The guidance is effective for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. A reporting entity should apply the amendments retrospectively to all periods presented and early adoption is permissible. The company anticipates that this guidance will only impact disclosure and will not impact the company's financial position or results of operations. In February 2015, the FASB issued ASU No. 2015-02 Consolidation (Topic 810), Amendments to the Consolidation Analysis. The amendments under the new guidance modify the evaluation of whether limited partnerships and similar legal entities are VIEs or voting interest entities and eliminate the presumption that a general partner should consolidate a limited partnership. The ASU is effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. A reporting entity also may apply the amendments retrospectively. The company is currently evaluating the impact of adopting this guidance on its financial position and results of operations. In May 2014, the FASB and the International Accounting Standards Board (IASB) jointly issued ASU No. 2014-9, Revenue from Contracts with Customers (Topic 606), which clarifies the principles for recognizing revenue and develops a common revenue standard for GAAP and International Financial Reporting Standards (IFRS). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. In July 2015, the FASB approved a deferral of the ASU effective date from annual and interim periods beginning after December 15, 2016 to annual and interim periods beginning after December 15, 2017. The company is currently evaluating the impact of adopting this guidance on its financial position and results of operations.

Summary of Significant Accounting Policies

Interim Financial Statements

The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) for interim financial information and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair statement of the results for interim periods have been included. Results for interim periods should not be considered indicative of results for a full year. These interim Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and Notes thereto contained in the company’s Annual Report on Form 10-K for the year ended December 31, 2014, collectively referred to as the “2014 Annual Report”. The Consolidated Financial Statements include the accounts of the company and all of its subsidiaries in which a controlling interest is maintained, as well as variable interest entities (VIEs) for which DuPont is the primary beneficiary.

Basis of Presentation

Certain reclassifications of prior year's data have been made to conform to current year's presentation. On July 1, 2015, the company completed the separation of its Performance Chemicals segment through the spin-off of all of the issued and outstanding stock of The Chemours Company (Chemours). In accordance with GAAP, the financial position and results of operations of the Performance Chemicals segment are presented as discontinued operations and, as such, have been excluded from continuing operations and segment results for all periods presented. The sum of the individual earnings per share amounts from continuing operations and discontinued operations may not equal the total company earnings per share amounts due to rounding. The cash flows and comprehensive income related to the Performance Chemicals segment have not been segregated and are included in the Condensed Consolidated Statements of Cash Flows and Comprehensive Income, respectively, for all periods presented. Amounts related to the Performance Chemicals segment are consistently included or excluded from the Notes to the interim Consolidated Financial Statements based on the respective financial statement line item. See Note 2 for additional information.

The company revised accumulated other comprehensive loss at January 1, 2013 to adjust for currency translation of $97 and pension settlement charges of $54 that should have been recorded in prior years. The revision resulted in a $151 decrease in accumulated other comprehensive loss with a corresponding reduction in reinvested earnings. The currency translation was related to an adjustment to the exchange rates used by a foreign subsidiary in the translation of the financial statements to U.S. dollar (USD) in prior years. See further discussion of the pension settlement charges in Note 13. The impact of these adjustments is not material to the company’s current or previously issued financial statements.

The company’s cost structure is being impacted by the global, multi-year initiative to redesign its global organization and operating model to improve productivity and agility across all businesses and functions. Effective December 31, 2014, in order to better align to the transforming company’s organization and resulting cost structure, certain costs were reclassified from other operating charges to selling, general and administrative expenses. Prior year data have been reclassified to conform to current year presentation. Other operating charges primarily include, costs associated with the Performance Chemical separation, product claim charges and non-capitalizable costs associated with capital projects. Selling, general and administrative expense primarily includes selling and marketing expenses, commissions, functional costs, and business management expenses. Cost of goods sold primarily includes the cost of manufacture and delivery, ingredients or raw materials, direct salaries, wages and benefits and overhead.

Foreign Currency Translation

The company's worldwide operations utilize the USD or local currency as the functional currency, where applicable. The company identifies its separate and distinct foreign entities and groups the foreign entities into two categories: 1) extension of the parent (USD functional currency) and 2) self-contained (local functional currency). If a foreign entity does not clearly align with either category, factors are evaluated and a judgment is made to determine the functional currency.

For foreign entities where the USD is the functional currency, all foreign currency-denominated asset and liability amounts are re-measured into USD at end-of-period exchange rates, except for inventories, prepaid expenses, property, plant and equipment, goodwill and other intangible assets, which are re-measured at historical rates. Foreign currency income and expenses are re-measured at average exchange rates in effect during the year, except for expenses related to balance sheet amounts re-measured at historical exchange rates. Exchange gains and losses arising from re-measurement of foreign currency-denominated monetary assets and liabilities are included in income in the period in which they occur.

For foreign entities where the local currency is the functional currency, assets and liabilities denominated in local currencies are translated into USD at end-of-period exchange rates and the resultant translation adjustments are reported, net of their related tax effects, as a component of accumulated other comprehensive loss in equity. Assets and liabilities denominated in other than the local currency are re-measured into the local currency prior to translation into USD and the resultant exchange gains or losses are included in income in the period in which they occur. Income and expenses are translated into USD at average exchange rates in effect during the period.

The company changes the functional currency of its separate and distinct foreign entities only when significant changes in economic facts and circumstances indicate clearly that the functional currency has changed. As a result of the separation of its Performance Chemicals segment, coupled with the company’s ongoing redesign initiative, the functional currency at certain of the company’s foreign entities is being re-evaluated which, in some cases, has resulted in a change in the foreign entities’ functional currency.

Venezuelan Foreign Currency

Venezuela is considered a highly inflationary economy under GAAP and the USD is the functional currency for the company's subsidiaries in Venezuela. The official exchange rate continues to be set through the National Center for Foreign Commerce (CENCOEX, previously CADIVI). Based on its evaluation of the restrictions and limitations affecting the availability of specific exchange rate mechanisms, management concluded in the second quarter of 2014 that the Alternative Currency Exchange System (SICAD 2) auction process would be the most likely mechanism available. As a result, in the second quarter of 2014, the company changed from the official exchange rate to the SICAD 2 exchange rate, which resulted in a charge of $58 recorded within other income, net in the company's interim Consolidated Income Statements for the nine months ended September 30, 2014.

During the first quarter of 2015, the Venezuelan government enacted additional changes to the country’s foreign exchange systems including the introduction of the SIMADI (Foreign Exchange Marginal System) auction process. Management has concluded that the SIMADI auction process would be the most likely exchange mechanism available. As a result, effective in the first quarter of 2015, the company changed from the SICAD 2 to the SIMADI exchange rate, to re-measure its Bolivar Fuertes (VEF) denominated net monetary assets which resulted in a charge of $3 recorded within other income, net in the company's interim Consolidated Income Statements for the nine months ended September 30, 2015. The remaining net monetary assets and non-monetary assets are immaterial at September 30, 2015.

Recent Accounting Pronouncements

Accounting Pronouncements Implemented in 2015

In April 2014, the FASB issued authoritative guidance amending existing requirements for reporting discontinued operations. Under the new guidance, discontinued operations reporting is limited to disposal transactions that represent strategic shifts having a major effect on operations and financial results. The amended guidance also enhances disclosures and requires assets and liabilities of a discontinued operation to be classified as such for all periods presented in the financial statements. Public entities will apply the amended guidance prospectively to all disposals occurring within annual periods beginning on or after December 15, 2014 and interim periods within those years. The company adopted this standard on January 1, 2015. Due to the change in requirements for reporting discontinued operations described above, presentation and disclosures of disposal transactions after adoption may be different than under previous standards.

New Accounting Pronouncements to be Implemented

In May 2015, the FASB issued ASU No. 2015-07, Fair Value Measurement (Topic 820), Disclosures for Investments in Certain Entities that Calculate Net Asset Value per Share or its Equivalent. This guidance removes the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient. The guidance also removes the requirement to make certain disclosures for all investments that are eligible to be measured at fair value using the net asset value per share practical expedient. Rather, those disclosures are limited to investments for which the entity has elected to measure the fair value using that practical expedient. The guidance is effective for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. A reporting entity should apply the amendments retrospectively to all periods presented and early adoption is permissible. The company anticipates that this guidance will only impact disclosure and will not impact the company's financial position or results of operations.

In February 2015, the FASB issued ASU No. 2015-02 Consolidation (Topic 810), Amendments to the Consolidation Analysis. The amendments under the new guidance modify the evaluation of whether limited partnerships and similar legal entities are VIEs or voting interest entities and eliminate the presumption that a general partner should consolidate a limited partnership. The ASU is effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. A reporting entity also may apply the amendments retrospectively. The company is currently evaluating the impact of adopting this guidance on its financial position and results of operations.

In May 2014, the FASB and the International Accounting Standards Board (IASB) jointly issued ASU No. 2014-9, Revenue from Contracts with Customers (Topic 606), which clarifies the principles for recognizing revenue and develops a common revenue standard for GAAP and International Financial Reporting Standards (IFRS). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. In July 2015, the FASB approved a deferral of the ASU effective date from annual and interim periods beginning after December 15, 2016 to annual and interim periods beginning after December 15, 2017. The company is currently evaluating the impact of adopting this guidance on its financial position and results of operations.