Extinguishment Of Debt, Early Termination Premium

No definition available.

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Namespace Prefix:	hwm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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-Subparagraph (SX 210.5-02.22(a)(1))
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+ Details

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Balance Type:	na
Period Type:	instant

- 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

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870

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-Publisher FASB
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-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611

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

- Definition

Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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Period Type:	duration

- Details

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Period Type:

Debt - Public Debt (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended
Debt - Public Debt (Details) - USD ($) $ in Millions	Mar. 31, 2023	Jan. 31, 2023	Mar. 31, 2023	Mar. 31, 2022
Debt Instrument [Line Items]
Payment for early redemption of debt			$ 1	$ 0
5.125% Notes, due 2024
Debt Instrument [Line Items]
Early redemption of debt		$ 26
Long-term debt, interest rate	5.125%	5.125%	5.125%
Payment for early redemption of debt	$ 150
Repayments of Debt	155
Early termination premium	4
Interest expense	$ 1