Overview (Policies)	9 Months Ended
Sep. 30, 2017
Accounting Policies [Abstract]
Basis of presentation	Basis of Presentation Cooper-Standard Holdings Inc. (together with its consolidated subsidiaries, the “Company” or “Cooper Standard”), through its wholly-owned subsidiary, Cooper-Standard Automotive Inc. (“CSA U.S.”), is a leading manufacturer of sealing, fuel and brake delivery, fluid transfer, and anti-vibration systems. The Company’s products are primarily for use in passenger vehicles and light trucks that are manufactured by global automotive original equipment manufacturers (“OEMs”) and replacement markets. The Company conducts substantially all of its activities through its subsidiaries. The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) for interim financial information and should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016 (the “2016 Annual Report”), as filed with the SEC. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States (“U.S. GAAP”) for complete financial statements. These financial statements include all adjustments (consisting of normal, recurring adjustments) considered necessary for a fair presentation of the financial position and results of operations of the Company. The operating results for the interim period ended September 30, 2017 are not necessarily indicative of results for the full year. In preparing these financial statements, the Company has evaluated events and transactions for potential recognition or disclosure through the date the financial statements were issued.
Recent accounting pronouncements	Recently Adopted Accounting Pronouncements In the first quarter of 2017, the Company adopted Accounting Standards Update (“ASU”) 2015-11, Inventory (Topic 330): Simplifying the Measurement of Inventory. This ASU amended the guidelines for the measurement of inventory from lower of cost or market to the lower of cost and net realizable value. This new guidance has been adopted prospectively and had an immaterial impact on the Company’s consolidated financial statements. Recently Issued Accounting Pronouncements In August 2017, the Financial Accounting Standards Board (“FASB”) issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. This guidance eliminates the requirement to separately measure and report hedge ineffectiveness and generally requires the entire change in the fair value of a hedging instrument to be presented in the same income statement line as the hedged item. This guidance is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements. In May 2017, the FASB issued ASU 2017-09, Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting. This guidance clarifies that modification accounting is required only if there is a change in the fair value, vesting conditions, or classification (as equity or liability) of a share-based payment award due to changes in the terms or conditions. This guidance is effective for annual and interim reporting periods beginning after December 15, 2017. Early adoption is permitted. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. This guidance requires the service cost component of net periodic benefit cost to be recorded in the same income statement line item as other employee compensation costs arising from services rendered during the period. Other components of the net periodic benefit cost must be presented separately outside of operating income. This guidance is effective for annual and interim reporting periods beginning after December 15, 2017. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. This guidance eliminates the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge. Instead, entities will record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value. This guidance is effective for annual and interim reporting periods beginning after December 15, 2019. Early adoption is permitted. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. This guidance requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should now be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for annual and interim reporting periods beginning after December 15, 2017. Early adoption is permitted. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated statement of cash flows. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. This guidance will require companies to recognize the income tax effects of intercompany sales and transfers of assets other than inventory in the period in which the transfer occurs. This guidance is effective for annual and interim reporting periods beginning after December 15, 2017, and should be applied on a modified retrospective approach with a cumulative catch-up adjustment to opening retained earnings in the period of adoption. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. The amendments provide guidance on eight specific cash flow issues, thereby reducing diversity in practice. The amendments are effective for annual and interim reporting periods beginning after December 15, 2017. Early adoption is permitted. An entity that elects early adoption must adopt all of the amendments in the same period. The guidance requires companies to use a retrospective transition method upon adoption. The Company’s current accounting practices are consistent with the issues addressed by this guidance. Therefore, this guidance is not expected to have a material impact on the Company’s consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The guidance revises existing U.S. GAAP by requiring lessees to recognize right-of-use assets and lease liabilities for all leases (except for short-term leases). The standard also requires additional disclosures to help financial statement users better understand the amount, timing and uncertainty of cash flows arising from lease transactions. This guidance is effective for annual and interim reporting periods beginning after December 15, 2018. A modified retrospective transition approach is required with certain practical expedients available. The Company continues to perform a comprehensive evaluation on the impacts of adopting this standard and plans on adopting this ASU effective January 1, 2019. The Company believes this standard will primarily result in an increase in the assets and liabilities on its consolidated balance sheet and will not have a material impact on its consolidated income statement. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). The guidance prescribes a single, common revenue standard that replaces most existing revenue recognition guidance in U.S. GAAP. The standard outlines a five-step model whereby revenue is recognized as performance obligations within a contract are satisfied. The standard also requires new, expanded revenue disclosures. Several ASUs addressing revenue recognition have been issued since the issuance of ASU 2014-09. These ASUs, which modify certain sections of ASU 2014-09, are intended to promote a more consistent interpretation and application of the principles outlined in the standard. The Company will adopt the guidance effective January 1, 2018, the standard’s effective date, using the modified retrospective method. Under this method, the cumulative effect of adopting the standard is recognized in equity at the date of initial application. To assess the impact of the new standard, the Company developed a comprehensive project plan. This project plan includes analyzing the standard’s impact on customer contracts across the Company’s business segments, comparing its historical accounting policies and practices to the requirements of the new standard, and identifying potential differences from applying the new standard’s requirements. The Company has substantially completed its assessment and does not expect that adopting the new standard will have a material impact on its consolidated financial statements. As a result, it expects to recognize substantially all of its revenue at a point in time, generally when products are either shipped or delivered. The Company will finalize its evaluation of the effect on its consolidated financial statements during the fourth quarter of 2017. The Company has completed its evaluation of pre-production costs related to long-term supply arrangements, such as reimbursable tooling, and expects to continue accounting for pre-production costs in accordance with existing guidance. In addition, the Company’s internal control framework is not expected to significantly change. Instead, existing internal controls will be modified and augmented, as necessary. While implementing the new standard, the Company will continue to monitor FASB activities and interpretations of various non-authoritative industry groups for any possible impact on the Company’s findings.

Recently Adopted Accounting Pronouncements

In the first quarter of 2017, the Company adopted Accounting Standards Update (“ASU”) 2015-11, Inventory (Topic 330): Simplifying the Measurement of Inventory. This ASU amended the guidelines for the measurement of inventory from lower of cost or market to the lower of cost and net realizable value. This new guidance has been adopted prospectively and had an immaterial impact on the Company’s consolidated financial statements.

Recently Issued Accounting Pronouncements

In August 2017, the Financial Accounting Standards Board (“FASB”) issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. This guidance eliminates the requirement to separately measure and report hedge ineffectiveness and generally requires the entire change in the fair value of a hedging instrument to be presented in the same income statement line as the hedged item. This guidance is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements.

In May 2017, the FASB issued ASU 2017-09, Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting. This guidance clarifies that modification accounting is required only if there is a change in the fair value, vesting conditions, or classification (as equity or liability) of a share-based payment award due to changes in the terms or conditions. This guidance is effective for annual and interim reporting periods beginning after December 15, 2017. Early adoption is permitted. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements.

In March 2017, the FASB issued ASU 2017-07, Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. This guidance requires the service cost component of net periodic benefit cost to be recorded in the same income statement line item as other employee compensation costs arising from services rendered during the period. Other components of the net periodic benefit cost must be presented separately outside of operating income. This guidance is effective for annual and interim reporting periods beginning after December 15, 2017. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements.

In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. This guidance eliminates the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge. Instead, entities will record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value. This guidance is effective for annual and interim reporting periods beginning after December 15, 2019. Early adoption is permitted. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements.

In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. This guidance requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should now be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for annual and interim reporting periods beginning after December 15, 2017. Early adoption is permitted. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated statement of cash flows.

In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. This guidance will require companies to recognize the income tax effects of intercompany sales and transfers of assets other than inventory in the period in which the transfer occurs. This guidance is effective for annual and interim reporting periods beginning after December 15, 2017, and should be applied on a modified retrospective approach with a cumulative catch-up adjustment to opening retained earnings in the period of adoption. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. The amendments provide guidance on eight specific cash flow issues, thereby reducing diversity in practice. The amendments are effective for annual and interim reporting periods beginning after December 15, 2017. Early adoption is permitted. An entity that elects early adoption must adopt all of the amendments in the same period. The guidance requires companies to use a retrospective transition method upon adoption. The Company’s current accounting practices are consistent with the issues addressed by this guidance. Therefore, this guidance is not expected to have a material impact on the Company’s consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The guidance revises existing U.S. GAAP by requiring lessees to recognize right-of-use assets and lease liabilities for all leases (except for short-term leases). The standard also requires additional disclosures to help financial statement users better understand the amount, timing and uncertainty of cash flows arising from lease transactions. This guidance is effective for annual and interim reporting periods beginning after December 15, 2018. A modified retrospective transition approach is required with certain practical expedients available. The Company continues to perform a comprehensive evaluation on the impacts of adopting this standard and plans on adopting this ASU effective January 1, 2019. The Company believes this standard will primarily result in an increase in the assets and liabilities on its consolidated balance sheet and will not have a material impact on its consolidated income statement.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). The guidance prescribes a single, common revenue standard that replaces most existing revenue recognition guidance in U.S. GAAP. The standard outlines a five-step model whereby revenue is recognized as performance obligations within a contract are satisfied. The standard also requires new, expanded revenue disclosures.

Several ASUs addressing revenue recognition have been issued since the issuance of ASU 2014-09. These ASUs, which modify certain sections of ASU 2014-09, are intended to promote a more consistent interpretation and application of the principles outlined in the standard. The Company will adopt the guidance effective January 1, 2018, the standard’s effective date, using the modified retrospective method. Under this method, the cumulative effect of adopting the standard is recognized in equity at the date of initial application.

To assess the impact of the new standard, the Company developed a comprehensive project plan. This project plan includes analyzing the standard’s impact on customer contracts across the Company’s business segments, comparing its historical accounting policies and practices to the requirements of the new standard, and identifying potential differences from applying the new standard’s requirements. The Company has substantially completed its assessment and does not expect that adopting the new standard will have a material impact on its consolidated financial statements. As a result, it expects to recognize substantially all of its revenue at a point in time, generally when products are either shipped or delivered. The Company will finalize its evaluation of the effect on its consolidated financial statements during the fourth quarter of 2017.

The Company has completed its evaluation of pre-production costs related to long-term supply arrangements, such as reimbursable tooling, and expects to continue accounting for pre-production costs in accordance with existing guidance. In addition, the Company’s internal control framework is not expected to significantly change. Instead, existing internal controls will be modified and augmented, as necessary. While implementing the new standard, the Company will continue to monitor FASB activities and interpretations of various non-authoritative industry groups for any possible impact on the Company’s findings.