Significant Accounting Policies	9 Months Ended
Sep. 30, 2017
Accounting Policies [Abstract]
Significant Accounting Policies	Note 1 — Significant Accounting Policies In these notes, the terms “Hexcel,” “the Company,” “we,” “us,” or “our” mean Hexcel Corporation and subsidiary companies. The accompanying condensed consolidated financial statements are those of Hexcel Corporation. Refer to Note 1 to the consolidated financial statements included in the Annual Report on Form 10-K for the year ended December 31, 2016 for a discussion of our significant accounting policies. Basis of Presentation The accompanying Condensed Consolidated Financial Statements have been prepared from the unaudited accounting records of Hexcel pursuant to rules and regulations of the Securities and Exchange Commission (“SEC”) and in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information. Certain information and footnote disclosures normally included in financial statements have been omitted pursuant to rules and regulations of the SEC. In the opinion of management, the Condensed Consolidated Financial Statements include all normal recurring adjustments as well as any non-recurring adjustments necessary to present fairly the statement of financial position, results of operations and cash flows for the interim periods presented. The Condensed Consolidated Balance Sheet as of December 31, 2016 was derived from the audited 2016 consolidated balance sheet. Interim results are not necessarily indicative of results expected for any other interim period or for the full year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our 2016 Annual Report on Form 10-K filed with the SEC on February 9, 2017. Investments in Affiliated Companies We have a 50% equity ownership investment in a joint venture Aerospace Composites Malaysia Sdn. Bhd. (“ACM”). This investment is accounted for using the equity method of accounting. In 2016, the Company invested a total of $30.0 million in three new affiliates. In 2017, the Company invested an additional $12 million in two of these affiliates. The investments are each below a 20% ownership level and the Company accounts for these investments using the cost method. Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update No. 2014-09 (ASU 2014-09), “Revenue from Contracts with Customers”. The update clarifies the principles for recognizing revenue and develops a common revenue standard for all industries. The new standard is effective for the first quarter of 2018. Our implementation efforts include the identification of revenue within the scope of the standard, the evaluation of revenue contracts under the guidance and assessing the qualitative and quantitative impacts of the new standard on our financial statements. We are in the process of assessing the anticipated impact of the amended standard on our financial statements. We have certain contracts under which we produce products with no alternative use and the Company has an enforceable right to payment. As a result, the Company will be required to record revenue for these contracts over time as opposed to at the time of shipment as we do today. We expect to complete our evaluation by the end of fiscal 2017, which will allow us to determine the impact of the new standard on our consolidated results of operations and financial condition. The Company plans to adopt the new standard on January 1, 2018 using the modified retrospective method. In July 2015, the FASB issued Accounting Standards Update No.2015-11 (“ASU 2015-11”), Simplifying the Measurement of Inventory. The update requires that inventory within the scope of the guidance be measured at the lower of cost and net realizable value. The Company adopted this ASU in the first quarter of 2017 with no material impact on our consolidated balance sheets, results of operations and financial condition. In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2016-02 (ASU 2016-02), Leases. This ASU requires lessees to recognize a right of use asset and lease liability on the balance sheet for all leases, with the exception of short-term leases. The Company will adopt this ASU on January 1, 2019. We are currently evaluating the impact of adopting this guidance on our consolidated balance sheets, results of operations and financial condition. In March 2016, the FASB issued Accounting Standards Update No. 2016-06 (ASU 2016-06), Contingent put and call options in debt instruments. The new guidance clarifies that an exercise contingency does not need to be evaluated to determine whether it relates to interest rates and credit risk in an embedded derivative analysis. The new guidance will be effective for fiscal years beginning after December 15, 2016, including interim periods within those years. We adopted ASU 2016-06 effective for the quarter ended March 31, 2017 with no material impact on our consolidated balance sheets, results of operations and financial condition. In August of 2016, the FASB issued Accounting Standards Update No. 2016-15 (ASU 2016-15) "Classification of Certain Cash Receipts and Cash Payments” which clarifies the classification of certain types of cash flows. The standard is effective for financial statements issued for fiscal years beginning after December 15, 2017. Early adoption beginning in 2016 was permitted. Retrospective application is required. The Company is not early adopting and expects this ASU to have a minimal impact on the Company’s Statements of Cash Flows. In January 2017, the FASB issued Accounting Standards Update No. 2017-04 (ASU 2017-04), Simplifying the test for Goodwill Impairment, which removes the requirement to compare the implied fair value of goodwill with its carrying amount as part of step 2 of the goodwill impairment test. As a result, under the ASU, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The ASU is effective for annual and interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company early adopted ASU 2017-04 effective for the quarter ended March 31, 2017, for use in its fourth quarter annual goodwill impairment testing. In March 2017, the FASB issued Accounting Standards Update No. 2017-07 (ASU 2017-07), Compensation-Retirement Benefits, that amends the presentation of net periodic pension cost and net periodic postretirement benefit cost. This amendment will require an entity to disaggregate the service cost component from the other components of net periodic benefit cost, to report the service cost component in the same line item as other compensation costs and to report the other components of net periodic benefit cost separately as a line item below operating income on our statement of operations. In addition, capitalization of net periodic benefit cost in assets will be limited to the service cost component. This amendment is effective on January 1, 2018. This amendment is required to be adopted (i) retrospectively with respect to the disaggregation of the service cost component from the other components of net periodic benefit cost and the separate reporting of the other components of net periodic benefit cost outside of operating income and (ii) prospectively with respect to the capitalization in assets of the service cost component. We are currently evaluating the impact of this amendment on our financial position, results of operations and cash flows. In August 2017, the FASB issued Accounting Standards Update No. 2017-12 (ASU 2017-12), Targeted Improvement to Accounting for Hedging Activities, which better align hedge accounting with an organization’s risk management activities in the financial statements. In addition, the ASU simplifies the application of hedge accounting guidance in areas where practice issues exist. The ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted, including interim periods within those years. We expect this ASU to have a minimal impact on our consolidated balance sheets, results of operations and financial condition.

Note 1 — Significant Accounting Policies

In these notes, the terms “Hexcel,” “the Company,” “we,” “us,” or “our” mean Hexcel Corporation and subsidiary companies. The accompanying condensed consolidated financial statements are those of Hexcel Corporation. Refer to Note 1 to the consolidated financial statements included in the Annual Report on Form 10-K for the year ended December 31, 2016 for a discussion of our significant accounting policies.

Basis of Presentation

The accompanying Condensed Consolidated Financial Statements have been prepared from the unaudited accounting records of Hexcel pursuant to rules and regulations of the Securities and Exchange Commission (“SEC”) and in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information. Certain information and footnote disclosures normally included in financial statements have been omitted pursuant to rules and regulations of the SEC.

In the opinion of management, the Condensed Consolidated Financial Statements include all normal recurring adjustments as well as any non-recurring adjustments necessary to present fairly the statement of financial position, results of operations and cash flows for the interim periods presented. The Condensed Consolidated Balance Sheet as of December 31, 2016 was derived from the audited 2016 consolidated balance sheet. Interim results are not necessarily indicative of results expected for any other interim period or for the full year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our 2016 Annual Report on Form 10-K filed with the SEC on February 9, 2017.

Investments in Affiliated Companies

We have a 50% equity ownership investment in a joint venture Aerospace Composites Malaysia Sdn. Bhd. (“ACM”). This investment is accounted for using the equity method of accounting. In 2016, the Company invested a total of $30.0 million in three new affiliates. In 2017, the Company invested an additional $12 million in two of these affiliates. The investments are each below a 20% ownership level and the Company accounts for these investments using the cost method.

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update No. 2014-09 (ASU 2014-09), “Revenue from Contracts with Customers”. The update clarifies the principles for recognizing revenue and develops a common revenue standard for all industries. The new standard is effective for the first quarter of 2018. Our implementation efforts include the identification of revenue within the scope of the standard, the evaluation of revenue contracts under the guidance and assessing the qualitative and quantitative impacts of the new standard on our financial statements. We are in the process of assessing the anticipated impact of the amended standard on our financial statements. We have certain contracts under which we produce products with no alternative use and the Company has an enforceable right to payment. As a result, the Company will be required to record revenue for these contracts over time as opposed to at the time of shipment as we do today.

We expect to complete our evaluation by the end of fiscal 2017, which will allow us to determine the impact of the new standard on our consolidated results of operations and financial condition. The Company plans to adopt the new standard on January 1, 2018 using the modified retrospective method.

In July 2015, the FASB issued Accounting Standards Update No.2015-11 (“ASU 2015-11”), Simplifying the Measurement of Inventory. The update requires that inventory within the scope of the guidance be measured at the lower of cost and net realizable value. The Company adopted this ASU in the first quarter of 2017 with no material impact on our consolidated balance sheets, results of operations and financial condition.

In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2016-02 (ASU 2016-02), Leases. This ASU requires lessees to recognize a right of use asset and lease liability on the balance sheet for all leases, with the exception of short-term leases. The Company will adopt this ASU on January 1, 2019. We are currently evaluating the impact of adopting this guidance on our consolidated balance sheets, results of operations and financial condition.

In March 2016, the FASB issued Accounting Standards Update No. 2016-06 (ASU 2016-06), Contingent put and call options in debt instruments. The new guidance clarifies that an exercise contingency does not need to be evaluated to determine whether it relates to interest rates and credit risk in an embedded derivative analysis. The new guidance will be effective for fiscal years beginning after December 15, 2016, including interim periods within those years. We adopted ASU 2016-06 effective for the quarter ended March 31, 2017 with no material impact on our consolidated balance sheets, results of operations and financial condition.

In August of 2016, the FASB issued Accounting Standards Update No. 2016-15 (ASU 2016-15) "Classification of Certain Cash Receipts and Cash Payments” which clarifies the classification of certain types of cash flows. The standard is effective for financial statements issued for fiscal years beginning after December 15, 2017. Early adoption beginning in 2016 was permitted. Retrospective application is required. The Company is not early adopting and expects this ASU to have a minimal impact on the Company’s Statements of Cash Flows.

In January 2017, the FASB issued Accounting Standards Update No. 2017-04 (ASU 2017-04), Simplifying the test for Goodwill Impairment, which removes the requirement to compare the implied fair value of goodwill with its carrying amount as part of step 2 of the goodwill impairment test. As a result, under the ASU, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The ASU is effective for annual and interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company early adopted ASU 2017-04 effective for the quarter ended March 31, 2017, for use in its fourth quarter annual goodwill impairment testing.

In March 2017, the FASB issued Accounting Standards Update No. 2017-07 (ASU 2017-07), Compensation-Retirement Benefits, that amends the presentation of net periodic pension cost and net periodic postretirement benefit cost. This amendment will require an entity to disaggregate the service cost component from the other components of net periodic benefit cost, to report the service cost component in the same line item as other compensation costs and to report the other components of net periodic benefit cost separately as a line item below operating income on our statement of operations. In addition, capitalization of net periodic benefit cost in assets will be limited to the service cost component. This amendment is effective on January 1, 2018. This amendment is required to be adopted (i) retrospectively with respect to the disaggregation of the service cost component from the other components of net periodic benefit cost and the separate reporting of the other components of net periodic benefit cost outside of operating income and (ii) prospectively with respect to the capitalization in assets of the service cost component. We are currently evaluating the impact of this amendment on our financial position, results of operations and cash flows.

In August 2017, the FASB issued Accounting Standards Update No. 2017-12 (ASU 2017-12), Targeted Improvement to Accounting for Hedging Activities, which better align hedge accounting with an organization’s risk management activities in the financial statements. In addition, the ASU simplifies the application of hedge accounting guidance in areas where practice issues exist. The ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted, including interim periods within those years. We expect this ASU to have a minimal impact on our consolidated balance sheets, results of operations and financial condition.