Commitments and Contingent Liabilities - Additional Information (Detail) - 12 months ended Dec. 31, 2024 kr in Thousands, $ in Thousands	USD ($)	SEK (kr)
Commitments And Contingent Liabilities [Line Items]
Outstanding standby and commercial letters of credit	$ 15,800
Surety bonds issued to guarantee obligations	$ 3,100	kr 33,900
Percentage of employees, including ASW, covered by collective bargaining agreements	31.00%
Bargaining agreement beginning expiration year	2025-03
Bargaining agreement ending expiration year	2026-09
Collective Bargaining Agreement [Member]
Commitments And Contingent Liabilities [Line Items]
Percentage of covered employees	80.00%
Capital Expenditures [Member]
Commitments And Contingent Liabilities [Line Items]
Purchase commitments	$ 4,400

Bargaining agreement beginning expiration year.

No definition available.

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Namespace Prefix:	ap_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Bargaining agreement ending expiration year.

+ References

No definition available.

+ Details

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Namespace Prefix:	ap_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Commitments And Contingent Liabilities [Line Items]

+ References

No definition available.

+ Details

Name:	ap_CommitmentsAndContingentLiabilitiesLineItems
Namespace Prefix:	ap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of covered employees under collective bargaining agreements.

+ References

No definition available.

+ Details

Name:	ap_PercentageOfCoveredEmployeesUnderCollectiveBargainingAgreements
Namespace Prefix:	ap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Sum of the amount of expected guaranteed benefits in excess of the projected account balances for minimum guaranteed benefit contracts, as of the balance sheet date, net of reinsurance recoverables, for all guaranteed benefit types.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 944
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480109/944-80-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 944
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479808/944-20-55-15

+ Details

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

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage of entity's employees covered by collective-bargaining arrangement (CBA) to all participants in multiemployer pension plan determined to be individually significant.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 715
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480576/715-80-50-5

+ Details

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

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=us-gaap_CapitalAdditionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: