Bargaining agreement beginning expiration year.

No definition available.

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

- Definition

Bargaining agreement ending expiration year.

+ References

No definition available.

+ Details

Name:	ap_BargainingAgreementEndingExpirationYear
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

Estimated cost on upgrading existing equipment.

+ References

No definition available.

+ Details

Name:	ap_EstimatedCostOnUpgradingExistingEquipment
Namespace Prefix:	ap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of surety bonds issued.

+ References

No definition available.

+ Details

Name:	ap_NumberOfSuretyBondsIssued
Namespace Prefix:	ap_
Data Type:	xbrli:integerItemType
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/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 80
-Topic 944
-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

Name:	us-gaap_CollectiveBargainingArrangementAxis=ap_CollectiveBargainingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

Commitments and Contingent Liabilities - Additional Information (Detail) kr in Thousands, $ in Thousands	1 Months Ended	12 Months Ended
	Aug. 31, 2022 USD ($)	Dec. 31, 2023 USD ($) Bond	Dec. 31, 2021 USD ($)	Dec. 31, 2023 SEK (kr)
Commitments And Contingent Liabilities [Line Items]
Outstanding standby and commercial letters of credit		$ 19,700
Number of surety bonds issued \| Bond		2
Surety bonds issued to guarantee obligations		$ 3,400		kr 33,900
Estimated cost on upgrading existing equipment			$ 26,000
Percentage of employees, including ASW, covered by collective bargaining agreements		31.00%
Bargaining agreement beginning expiration year		2024-12
Bargaining agreement ending expiration year		2026-09
Collective Bargaining Agreement [Member]
Commitments And Contingent Liabilities [Line Items]
Percentage of covered employees		35.00%
Capital Expenditures [Member]
Commitments And Contingent Liabilities [Line Items]
Estimated cost on upgrading existing equipment	$ 2,500	$ 26,000
Purchase commitments		$ 6,000