Line Of Credit Facility, Additional Borrowing Capacity

No definition available.

Name:	avnt_LineOfCreditFacilityAdditionalBorrowingCapacity
Namespace Prefix:	avnt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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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Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
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.

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+ Details

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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+ Details

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

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
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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.

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+ Details

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Period Type:	instant

- Definition

Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

+ References

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Balance Type:	credit
Period Type:	duration

- Details

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Namespace Prefix:
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Period Type:

- Details

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Period Type:

- Details

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Period Type:

- Details

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Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Period Type:

- Details

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FINANCING ARRANGEMENTS - Narrative (Details) - USD ($)		3 Months Ended	9 Months Ended
FINANCING ARRANGEMENTS - Narrative (Details) - USD ($)	Mar. 12, 2025	Sep. 30, 2025	Sep. 30, 2025	Jun. 12, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Fair value of debt instruments		$ 2,007,700,000	$ 2,007,700,000		$ 2,083,300,000
Senior secured term loan due 2029 \| Secured Debt
Debt Instrument [Line Items]
Interest rate reduction	0.25%
Voluntary prepayment		50,000,000	100,000,000
Senior secured term loan due 2029 \| Secured Debt \| Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.75%
Senior secured term loan due 2029 \| Secured Debt \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.75%
JPMorgan Chase Bank Credit Facility \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Current borrowing capacity				$ 500,000,000
Additional borrowing capacity				$ 250,000,000
Senior secured revolving credit facility due 2030 \| Revolving Credit Facility
Debt Instrument [Line Items]
Borrowings outstanding		$ 0	$ 0