Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2022
Accounting Policies [Abstract]
Basis of Presentation	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, comprehensive loss, results of operations, cash flows and statement of stockholders’ equity for the interim periods presented. The Condensed Consolidated Balance Sheet as of December 31, 2021 was derived from the audited 2021 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 2021 Annual Report on Form 10-K.
Investments in Affiliated Companies	Investments in Affiliated Companies We have a 50% equity investment in Aerospace Composites Malaysia Sdn. Bhd. This investment is accounted for using the equity method of accounting.
Assets Held for Sale	Assets Held for Sale In November 2020 we closed our wind energy prepreg production facility in Windsor, Colorado and as a result, certain plant assets to be sold with a carrying value of approximately $12.6 million have been recorded in “Assets held for sale” in the Condensed Consolidated Balance Sheets as of September 30, 2022 and December 31, 2021. The sale of these assets is expected to occur during 2022. During the first quarter of 2022, we entered into an agreement to sell our Dublin, California facility. The sale of the facility closed during the second quarter of 2022, and we received approximately $21.2 million in net proceeds from the sale and recorded a gain on the sale of approximately $19.4 million which is included in other operating (income) expense in the Condensed Consolidated Statement of Operations. The Company will be relocating certain of its Dublin-based research, technology and laboratory support personnel and equipment to a newly constructed facility in Salt Lake City, Utah. Recently Enacted Government Legislation On August 16, 2022, the U.S. enacted the Inflation Reduction Act (the "IRA") of 2022. The IRA contains a number of tax provisions including a new corporate alternative minimum tax, an excise tax on stock buybacks, and incentives for energy and climate initiatives. These provisions are effective for taxable years beginning after December 31, 2022. Currently, we do not qualify for the corporate alternative minimum tax. The impact of the excise tax will be dependent on the extent of share repurchases made in future periods. We are assessing the applicability and impact to Hexcel of incentives for energy and climate initiatives.

Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2022

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, comprehensive loss, results of operations, cash flows and statement of stockholders’ equity for the interim periods presented. The Condensed Consolidated Balance Sheet as of December 31, 2021 was derived from the audited 2021 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 2021 Annual Report on Form 10-K.

Investments in Affiliated Companies

We have a 50% equity investment in Aerospace Composites Malaysia Sdn. Bhd. This investment is accounted for using the equity method of accounting.

Assets Held for Sale

In November 2020 we closed our wind energy prepreg production facility in Windsor, Colorado and as a result, certain plant assets to be sold with a carrying value of approximately $12.6 million have been recorded in “Assets held for sale” in the Condensed Consolidated Balance Sheets as of September 30, 2022 and December 31, 2021. The sale of these assets is expected to occur during 2022.

During the first quarter of 2022, we entered into an agreement to sell our Dublin, California facility. The sale of the facility closed during the second quarter of 2022, and we received approximately $21.2 million in net proceeds from the sale and recorded a gain on the sale of approximately $19.4 million which is included in other operating (income) expense in the Condensed Consolidated Statement of Operations. The Company will be relocating certain of its Dublin-based research, technology and laboratory support personnel and equipment to a newly constructed facility in Salt Lake City, Utah.

Recently Enacted Government Legislation

On August 16, 2022, the U.S. enacted the Inflation Reduction Act (the "IRA") of 2022. The IRA contains a number of tax provisions including a new corporate alternative minimum tax, an excise tax on stock buybacks, and incentives for energy and climate initiatives. These provisions are effective for taxable years beginning after December 31, 2022. Currently, we do not qualify for the corporate alternative minimum tax. The impact of the excise tax will be dependent on the extent of share repurchases made in future periods. We are assessing the applicability and impact to Hexcel of incentives for energy and climate initiatives.