Business Segments - Business Segment Net Sales and (Loss) Income from Operations Before Income Taxes (Parenthetical) (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2023 USD ($) Customer	Dec. 31, 2022 USD ($) Customer	Dec. 31, 2021
Revenue from External Customer [Line Items]
Investments in joint ventures	$ 2,175	$ 2,175
Defense-to-indemnity cost ratio	60.00%	65.00%	70.00%
Insurance receivable - asbestos	$ 160,245	$ 105,910
Noncurrent asbestos-related insurance receivables	145,245	90,910
U.S. [Member]
Revenue from External Customer [Line Items]
Charge for asbestos litigation	40,696
Net credit of reduction in the estimated defense	$ 1,457	$ (2,226)
Defense-to-indemnity cost ratio	60.00%	65.00%	70.00%
Proceeds from insolvent asbestos-related insurance carrier	$ 191
Forged and Cast Engineered Products [Member]
Revenue from External Customer [Line Items]
Number of customers accounted for net sales \| Customer	1	1
Investments in joint ventures	$ 2,175	$ 2,175
Forged and Cast Engineered Products [Member] \| Sales Revenue, Net [Member] \| Customer Concentration Risk [Member]
Revenue from External Customer [Line Items]
Net sales	11.00%	10.00%
Air and Liquid Processing [Member]
Revenue from External Customer [Line Items]
Charge for asbestos litigation	$ 40,696
Net credit of reduction in the estimated defense	$ 1,457	$ (2,226)
Defense-to-indemnity cost ratio	60.00%	65.00%	70.00%
Proceeds from insolvent asbestos-related insurance carrier	$ 191

Defense-to-indemnity cost ratio.

No definition available.

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- Definition

The number of customers who represented at least 10% of a segment's sales.

+ References

No definition available.

+ Details

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- Definition

Litigation settlement expense (benefit).

+ References

No definition available.

+ Details

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

- Definition

Net credit of reduction in the estimated defense.

+ References

No definition available.

+ Details

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- Definition

Proceeds received from insolvent insurance carrier.

+ References

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-21

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-20

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482861/275-10-50-18

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482861/275-10-50-20

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- 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
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- Definition

Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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- Definition

Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) of amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

+ References

+ Details

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

- Definition

Amount of investment in equity method investee and investment in and advance to affiliate.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(18))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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