Represents the amounts waived or reimbursed by us for management fees and operating expenses.

No definition available.

Name:	apam_RelatedPartyFeeWaiverExpenseReimbursement
Namespace Prefix:	apam_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount due from parties in nontrade transactions, classified as other.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(5)(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(a)(4))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_OtherReceivables
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c)(2)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c)(2)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(g)(3))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479941/924-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 4: 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 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-40

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-41

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-4

+ Details

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

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=apam_ArtisanFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=apam_ManagementFeesBeforeReimbursementRevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=apam_ExpenseReimbursementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=apam_ArtisanGlobalFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=apam_ArtisanPrivateFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_RelatedPartyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidationItemsAxis=srt_ConsolidationEliminationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidatedEntitiesAxis=srt_SubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Related Party Transaction [Line Items]
Non-customer receivables	$ 7,821		$ 7,821		$ 6,430
Revenue from contract with customers	270,818	$ 242,903	535,169	$ 477,412
Artisan Funds \| Management Fees Before Reimbursement Revenue
Related Party Transaction [Line Items]
Revenue from contract with customers	157,689	140,830	311,001	275,523
Artisan Funds \| Expense Reimbursement
Related Party Transaction [Line Items]
Revenue from contract with customers	487	248	797	548
Artisan Global Funds \| Management Fees Before Reimbursement Revenue
Related Party Transaction [Line Items]
Revenue from contract with customers	13,015	10,929	25,501	21,168
Artisan Global Funds \| Expense Reimbursement
Related Party Transaction [Line Items]
Revenue from contract with customers	7	0	33	0
Artisan Private Funds \| Management Fees Before Reimbursement Revenue
Related Party Transaction [Line Items]
Revenue from contract with customers	1,923	2,803	3,895	5,996
Artisan Private Funds \| Expense Reimbursement
Related Party Transaction [Line Items]
Revenue from contract with customers	52	44	98	65
Related Party
Related Party Transaction [Line Items]
Non-customer receivables	3,400		3,400		$ 200
Consolidation, Eliminations \| Artisan Funds \| Management Fees Before Reimbursement Revenue
Related Party Transaction [Line Items]
Revenue from contract with customers	0	(114)	0	(198)
Consolidation, Eliminations \| Artisan Funds \| Expense Reimbursement
Related Party Transaction [Line Items]
Revenue from contract with customers	0	(188)	0	(335)
Consolidation, Eliminations \| Artisan Global Funds \| Management Fees Before Reimbursement Revenue
Related Party Transaction [Line Items]
Revenue from contract with customers	(95)	(98)	(218)	(164)
Consolidation, Eliminations \| Artisan Global Funds \| Expense Reimbursement
Related Party Transaction [Line Items]
Revenue from contract with customers	(135)	(91)	(298)	(181)
Consolidation, Eliminations \| Artisan Private Funds \| Management Fees Before Reimbursement Revenue
Related Party Transaction [Line Items]
Revenue from contract with customers	(385)	(217)	(738)	(391)
Consolidation, Eliminations \| Artisan Private Funds \| Expense Reimbursement
Related Party Transaction [Line Items]
Revenue from contract with customers	(20)	(27)	(40)	(47)
Subsidiaries \| Artisan Funds \| Management Fees Before Reimbursement Revenue
Related Party Transaction [Line Items]
Revenue from contract with customers	157,689	140,944	311,001	275,721
Subsidiaries \| Artisan Funds \| Expense Reimbursement
Related Party Transaction [Line Items]
Fee waiver / expense reimbursement	487	436	797	883
Subsidiaries \| Artisan Global Funds \| Management Fees Before Reimbursement Revenue
Related Party Transaction [Line Items]
Revenue from contract with customers	13,110	11,027	25,719	21,332
Subsidiaries \| Artisan Global Funds \| Expense Reimbursement
Related Party Transaction [Line Items]
Revenue from contract with customers	142	91	331	181
Subsidiaries \| Artisan Private Funds \| Management Fees Before Reimbursement Revenue
Related Party Transaction [Line Items]
Revenue from contract with customers	2,308	3,020	4,633	6,387
Subsidiaries \| Artisan Private Funds \| Expense Reimbursement
Related Party Transaction [Line Items]
Revenue from contract with customers	$ 72	$ 71	$ 138	$ 112