XML 69 R61.htm IDEA: XBRL DOCUMENT
v3.25.3

Pension and Other Postretirement Benefits - Contributions for Pension and Other Postretirement Benefits (Detail) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Other Postretirement Benefit Plans [Member] |  |
Pension Plans Postretirement And Other Employee Benefits [Line Items] |  |
Contribution | $ 259 | $ 273
U.S. [Member] | Defined Benefit Pension Plan [Member] |  |
Pension Plans Postretirement And Other Employee Benefits [Line Items] |  |
Contribution | 2,488 | 4,641
U.S. [Member] | Defined Contribution Plan [Member] |  |
Pension Plans Postretirement And Other Employee Benefits [Line Items] |  |
Contribution | 207 | 2,457
U.S. [Member] | Nonqualified [Member] | Defined Benefit Pension Plan [Member] |  |
Pension Plans Postretirement And Other Employee Benefits [Line Items] |  |
Contribution | 574 | 576
Foreign Defined Benefits Pension Plans [Member] | Defined Benefit Pension Plan [Member] |  |
Pension Plans Postretirement And Other Employee Benefits [Line Items] |  |
Contribution | 323 | 327
U.K. [Member] | Defined Contribution Plan [Member] |  |
Pension Plans Postretirement And Other Employee Benefits [Line Items] |  |
Contribution | $ 2,220 | $ 200

X
- Definition Pension Plans, Postretirement and Other Employee Benefits [Line Items] + References No definition available. + Details
Name: | ap_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems
Namespace Prefix: | ap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash outflow for pension and other postretirement benefits. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Subparagraph (g) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-25 + Details
Name: | us-gaap_PensionAndOtherPostretirementBenefitContributions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=ap_DefinedContributionPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTaxStatusAxis=us-gaap_NonqualifiedPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=country_GB
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |