Debt instrument maturity year.

No definition available.

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Period Type:	duration

- Definition

Letters of credit issued amount.

+ References

No definition available.

+ Details

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Namespace Prefix:	hxl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum amount available under credit facility to issue letters of credit.

+ References

No definition available.

+ Details

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Namespace Prefix:	hxl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Minimum liquidity amount required to maintain under credit agreement liquidity covenant.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage of reduction in interest rate on senior notes.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
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Period Type:	duration

- Definition

The expiration, mandatory redemption, or due date, month and year (YYYY-MM), of the financial instrument issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.

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Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

+ Details

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Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of interest rate for borrowing under credit facility. Includes, but is not limited to, terms and method for determining interest rate.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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Debt - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
Debt - Additional Information (Details) - USD ($)	Jun. 30, 2019	Mar. 31, 2022	Dec. 31, 2017	Dec. 31, 2015	Apr. 01, 2022	Dec. 31, 2021	Jan. 28, 2021
Debt Instrument [Line Items]
Borrowings		$ 857,500,000				$ 822,400,000
Senior unsecured credit facility- revolving loan due 2021
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 700,000,000
Senior unsecured credit facility- revolving loan due 2024
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,000,000,000
Debt instrument expiration period	2024-06
Debt instrument, interest rate terms		The interest rate ranges from LIBOR + 0.875% to a maximum of LIBOR + 1.50%, depending upon the better of the Company’s leverage ratio or the credit rating.
Borrowings		$ 160,000,000
Maximum amount available under credit facility agreement to issue letters of credit		50,000,000
Letters of credit issued under credit facility		0
Undrawn availability under credit facility		$ 590,000,000
Weighted average interest rate		4.50%
Senior unsecured credit facility- revolving loan due 2024 \| Minimum
Debt Instrument [Line Items]
Credit facility interest rate basis	LIBOR + 0.875%
Spread on variable interest rate basis	0.875%
Senior unsecured credit facility- revolving loan due 2024 \| Maximum
Debt Instrument [Line Items]
Credit facility interest rate basis	LIBOR + 1.50%
Spread on variable interest rate basis	1.50%
Amended senior unsecured credit facility- revolving loan due 2024
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 750,000,000		$ 750,000,000
Debt instrument, covenant terms		On January 28, 2021, we further amended the Facility agreement (the “Second Amendment”) to provide that, from January 28, 2021 through and including March 31, 2022, we would not be subject to a maximum leverage ratio covenant but instead be required to maintain Liquidity (as defined in the Facility agreement) of at least $250 million. Additionally, during such period, the Company was subject to limitations on share repurchases, cash dividends, and its ability to incur secured debt, in each case subject to certain exceptions; the applicable margin and commitment fees would be increased; the incremental facility would not be available; and if the Company’s public debt rating was downgraded to (i) BB or lower by Standard & Poor’s and (ii) Ba2 or lower by Moody’s, we would be required to grant liens on certain of our assets, which liens would be released upon the Company’s public debt rating being upgraded to BB+ or higher by Standard & Poor’s or Ba1 or higher by Moody’s. The Company’s public debt rating as of March 31, 2022 is BB+/Baa3.
Minimum liquidity amount required to maintain under credit agreement liquidity covenant							250,000,000
Amended senior unsecured credit facility- revolving loan due 2024 \| Maximum
Debt Instrument [Line Items]
Maximum borrowing capacity							$ 1,000,000,000
3.95% senior unsecured notes due 2027
Debt Instrument [Line Items]
Face value			$ 400,000,000
Debt instrument, interest rate		3.95%	3.95%
Debt instrument, maturity year			2027
Increase in senior notes interest rate			0.25%
Effective interest rate		4.12%
3.95% senior unsecured notes due 2027 \| Treasury Lock \| Interest Lock Agreement
Debt Instrument [Line Items]
Percentage of effective interest rate benefit		0.25%
3.95% senior unsecured notes due 2027 \| Level 2
Debt Instrument [Line Items]
Fair value of senior unsecured notes		$ 402,200,000
3.95% senior unsecured notes due 2027 \| Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate			5.95%
4.7% senior unsecured notes due 2025
Debt Instrument [Line Items]
Face value				$ 300,000,000
Debt instrument, interest rate				4.70%
Debt instrument, maturity year				2025
Increase in senior notes interest rate				0.25%
Effective interest rate		5.07%
4.7% senior unsecured notes due 2025 \| Level 2
Debt Instrument [Line Items]
Fair value of senior unsecured notes		$ 304,700,000
4.7% senior unsecured notes due 2025 \| Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate				6.70%