Artisan Partners Asset Management (APAM) 10-Q 4 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document Information [Line Items]
Entity Registrant Name	Artisan Partners Asset Management Inc.
Entity Central Index Key	1517302
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	FALSE
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		39,147,228
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		18,349,989
Class C Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		15,926,131

Unaudited_Consolidated_Stateme

Unaudited Consolidated Statements of Financial Condition (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
ASSETS
Cash and cash equivalents	$215,109	$182,284
Accounts receivable	66,411	69,361
Investment securities	7,030	6,712
Property and equipment, net	15,888	16,594
Deferred tax assets	687,770	562,396
Prepaid expenses and other assets	13,182	12,105
Total assets	1,005,390	849,452
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable, accrued expenses, and other	34,196	39,826
Accrued incentive compensation	65,311	12,973
Borrowings	200,000	200,000
Amounts payable under tax receivable agreements	596,421	489,154
Total liabilities	895,928	741,953
Commitments and Contingencies
Additional paid-in capital	99,410	93,524
Retained earnings	9,558	16,417
Accumulated other comprehensive income (loss)	115	206
Total stockholders’ equity	109,817	110,876
Noncontrolling interest - Artisan Partners Holdings	-355	-3,377
Total equity	109,462	107,499
Total liabilities and equity	1,005,390	849,452
Class A Common Stock
LIABILITIES AND STOCKHOLDERS' EQUITY
Common stock	391	342
Class B Common Stock
LIABILITIES AND STOCKHOLDERS' EQUITY
Common stock	184	215
Class C Common Stock
LIABILITIES AND STOCKHOLDERS' EQUITY
Common stock	$159	$172

Unaudited_Consolidated_Stateme1

Unaudited Consolidated Statements of Financial Condition (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Common stock, shares outstanding	73,401,398	72,927,543
Class A Common Stock
Common stock, par value per share	0.01	0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares outstanding	39,125,278	34,238,131
Class B Common Stock
Common stock, par value per share	0.01	0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares outstanding	18,349,989	21,463,033
Class C Common Stock
Common stock, par value per share	0.01	0.01
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares outstanding	15,926,131	17,226,379

Unaudited_Consolidated_Stateme2

Unaudited Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Revenues
Management Fees	$203,229	$201,792
Performance fees	346	0
Total revenues	203,575	201,792
Compensation and benefits
Salaries, incentive compensation and benefits	98,427	85,855
Pre-offering related compensation - share-based awards	10,414	23,637
Total compensation and benefits	108,841	109,492
Distribution and marketing	11,662	11,174
Occupancy	3,012	2,686
Communication and technology	5,213	4,476
General and administrative	7,018	6,812
Total operating expenses	135,746	134,640
Total operating income	67,829	67,152
Non-operating income (loss)
Interest expense	-2,879	-2,883
Net gain (loss) of Launch Equity	0	-598
Net gain (loss) on the tax receivable agreements	-6,427	0
Other non-operating income (expense)	5	-276
Total non-operating income (loss)	-9,301	-3,757
Income before income taxes	58,528	63,395
Provision for income taxes	5,082	11,208
Net income before noncontrolling interests	53,446	52,187
Less: Net income attributable to noncontrolling interests - Artisan Partners Holdings	33,932	44,149
Less: Net income (loss) attributable to noncontrolling interests - Launch Equity	0	-598
Net income attributable to Artisan Partners Asset Management Inc.	$19,514	$8,636
Earnings (loss) per share
Basic and diluted earnings (loss) per share	$0.43	($2.29)
Weighted average number of common shares outstanding
Basic and diluted weighted average number of common shares outstanding	32,633,481	20,214,242
Dividends declared per Class A common share	$1.55	$2.18

Unaudited_Consolidated_Stateme3

Unaudited Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Net income before noncontrolling interests	$53,446	$52,187
Unrealized gain (loss) on investment securities, net of tax of $88 and $86, respectively.	230	21
Less: reclassification adjustment for gain (loss) included in net income	0	0
Net unrealized gain (loss) on investment securities	230	21
Other comprehensive income (loss), net of tax
Foreign currency translation gain (loss)	-422	53
Total other comprehensive income (loss)	-192	74
Comprehensive income	53,254	52,261
Comprehensive income attributable to noncontrolling interests - Artisan Partners Holdings	33,831	44,019
Comprehensive income (loss) attributable to noncontrolling interests - Launch Equity	0	-598
Comprehensive income attributable to Artisan Partners Asset Management Inc.	$19,423	$8,840

Unaudited_Consolidated_Stateme4

Unaudited Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Securities Arising During Period, Tax	$88	$86

Unaudited_Consolidated_Stateme5

Unaudited Consolidated Statements of Changes in Shareholders Equity (USD $)	Total	Common Stock [Member]	Preferred Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income	Noncontrolling Interest	Noncontrolling Interest	Deferred Tax Assets
In Thousands								Launch Equity
Balance at beginning of period at Dec. 31, 2013	$132,311	$703	$34,909	$6,388	$1,401	$378	$38,060	$50,472
Net income before noncontrolling interests	52,187				8,636		44,149	-598
Other comprehensive income - foreign currency translation	53					13	40
Other comprehensive income - available for sale investments, net of tax	99					14	85
Cumulative impact of changes in ownership of Artisan Partners Holdings, LP, net of tax	0			-3,456		177	3,201		-78
Capital contribution	1,825							1,825
Amortization of equity-based compensation	28,278			9,357			18,921
Deferred Tax Assets Net Of Amounts Payable Under Tax Receivable Agreements	45,825			45,825
Issuance of Class A Common Stock, Net of Issuance Costs	552,990	93		552,897
Purchase of convertible preferred stock and subsidiary equity	-554,129	-85	-21,652	-533,204	0	0	-812	0
Distributions	-93,005						-93,005
Dividends	-46,778			-12,322	-34,456
Balance at end of period at Mar. 31, 2014	119,578	711	13,257	65,485	-24,419	582	12,263	51,699
Balance at beginning of period at Dec. 31, 2014	107,499	729		93,524	16,417	206	-3,377
Net income before noncontrolling interests	53,446				19,514		33,932
Other comprehensive income - foreign currency translation	-422					-214	-208
Other comprehensive income - available for sale investments, net of tax	264					95	169
Cumulative impact of changes in ownership of Artisan Partners Holdings, LP, net of tax	0			-1,578		28	1,516		-34
Amortization of equity-based compensation	19,605			9,887			9,718
Deferred Tax Assets Net Of Amounts Payable Under Tax Receivable Agreements	24,824			24,824
Issuance of Class A Common Stock, Net of Issuance Costs	176,016	38		175,978
Forfeitures	0	-1		1	0	0	0
Issuance of restricted stock awards		6		-6
Stock Repurchased and Retired During Period, Value	176,558	38		176,520	0		0
Distributions	-42,105						-42,105
Dividends	-53,073			-26,700	-26,373
Balance at end of period at Mar. 31, 2015	$109,462	$734		$99,410	$9,558	$115	($355)

Unaudited_Consolidated_Stateme6

Unaudited Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities
Net income before noncontrolling interests	$53,446	$52,187
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,039	693
Deferred income taxes	-576	2,540
Net (Gain) Loss On The Tax Receivable Agreements	6,427	0
(Gains) losses of Launch Equity, net	0	598
Proceeds from sale of investments by Launch Equity	0	56,880
Purchase of investments by Launch Equity	0	-48,094
Loss on disposal of property and equipment	10	5
Amortization of debt issuance costs	112	112
Share-based Compensation	19,605	28,278
Excess tax benefit on share based awards	-776	0
Change in assets and liabilities resulting in an increase (decrease) in cash:
Net change in operating assets and liabilities of Launch Equity	0	-10,611
Accounts receivable	2,950	1,891
Prepaid expenses and other assets	-1,774	-1,442
Accounts payable and accrued expenses	52,321	67,634
Class B liability awards	-3,920	-3,459
Deferred lease obligations	-155	10
Net cash provided by operating activities	128,709	147,222
Cash flows from investing activities
Acquisition of property and equipment	-587	-990
Leasehold improvements	-802	-949
Proceeds from Sale of Property, Plant, and Equipment	0	4
Purchase of Investment Securities	0	-10,000
Net cash used in investing activities	-1,389	-11,935
Cash flows from financing activities
Partnership distributions	-42,105	-93,005
Dividends Paid	-53,073	-46,778
Change in other liabilities	-17	-16
Net proceeds from issuance of common stock	176,558	554,129
Payment of costs directly associated with the issuance of Class A common stock	-76	-781
Purchase of preferred stock and subsidiary equity	-176,558	-554,129
Capital invested into Launch Equity	0	1,825
Excess tax benefit on share based awards	776	0
Net cash provided by (used in) financing activities	-94,495	-138,755
Net increase (decrease) in cash and cash equivalents	32,825	-3,468
Cash and cash equivalents
Beginning of period	182,284	211,839
End of period	215,109	208,371
Noncash activity:
Establishment of deferred tax assets	124,887	287,367
Establishment of amounts payable under tax receivable agreements	$100,840	$244,262

Nature_of_Business_and_Organiz

Nature of Business and Organization	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and nature of business	Note 1. Nature of Business and Organization
	Nature of Business
	Artisan Partners Asset Management, Inc. (“APAM” or “Artisan”) is an investment management firm focused on providing high-value added, active investment strategies to sophisticated clients globally. Artisan has seven autonomous investment teams that oversee fourteen distinct U.S., non-U.S. and global investment strategies. During the first quarter of 2015, Artisan announced the establishment of its seventh investment team, the Developing World team.
	Strategies are offered through multiple investment vehicles to accommodate a broad range of client mandates. Artisan offers its investment management services primarily to institutions and through intermediaries that operate with institutional-like decision-making processes and have long-term investment horizons.
	Organization
	On March 12, 2013, APAM completed its initial public offering (the “IPO”). APAM was formed for the purpose of becoming the general partner of Artisan Partners Holdings LP (“Artisan Partners Holdings” or “Holdings”) in connection with the IPO. Holdings is a holding company for the investment management business conducted under the name “Artisan Partners”. The reorganization (“IPO Reorganization”) established the necessary corporate structure to complete the IPO while at the same time preserving the ability of the firm to conduct operations through Holdings and its subsidiaries.
	As the sole general partner, APAM controls the business and affairs of Holdings. As a result, APAM consolidates Holdings’ financial statements and records a noncontrolling interest for the economic interests in Holdings held by the limited partners of Holdings. At March 31, 2015, APAM’s total economic interest in Holdings approximated 53% of Holdings’ economics.
	Artisan Partners Asset Management has been allocated a part of Artisan Partners Holdings’ net income since March 12, 2013, when it became Holdings’ general partner. APAM and its subsidiaries are hereafter referred to collectively as “Artisan” or the “Company”.
	2015 Follow-On Offering
	On March 9, 2015, APAM completed a registered public offering of 3,831,550 shares of Class A common stock (the “2015 Follow-On Offering”) and utilized all of the proceeds to purchase an aggregate of 3,831,550 common units of Artisan Partners Holdings at a price per unit of $46.08. The offering and subsequent purchase of units had the following impact on the consolidated financial statements:
	•	APAM received 3,831,550 GP units of Holdings, which increased APAM’s ownership interest in Holdings. See Note 6, “Noncontrolling interest - Holdings” for the financial statement impact of changes in ownership.
	•	APAM’s purchase of common units of Holdings with the proceeds resulted in an increase to deferred tax assets of approximately $105.1 million and an increase in amounts payable under the tax receivable agreements of approximately $89.4 million.
	Holdings Unit Exchanges
	During the three months ended March 31, 2015, certain limited partners of Artisan Partners Holdings exchanged common units (along with a corresponding number of shares of Class B or C common stock of APAM) for shares of Class A common stock (the “Holdings Common Unit Exchanges”). The following exchanges occurred during the three months ended March 31, 2015:
	•	194,474 Class A common units were exchanged for Class A common stock on March 9, 2015.
	•	332,538 Class B common units were exchanged for Class A common stock on March 9, 2015.
	The Holdings Common Unit Exchanges increased APAM’s ownership interest in Holdings, and resulted in a combined increase to deferred tax assets of approximately $13.5 million and an increase in amounts payable under tax receivable agreements of approximately $11.5 million.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Policy Text Block [Abstract]
Significant Accounting Policies [Text Block]	Note 2. Summary of Significant Accounting Policies
	Basis of presentation
	The accompanying financial statements are unaudited. In the opinion of management, all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of such consolidated financial statements have been included. Such interim results are not necessarily indicative of full year results.
	The consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial reporting and accordingly they do not include all of the information and footnotes required in the annual consolidated financial statements and accompanying footnotes. The year-end condensed balance sheet data was derived from audited financial statements, but does not include all disclosures required by U.S. GAAP. As a result, the interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in APAM’s latest annual report on Form 10-K.
	The accompanying financial statements were prepared in accordance with U.S. GAAP and related rules and regulations of the SEC. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates or assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from these estimates or assumptions.
	Principles of consolidation
	Artisan’s policy is to consolidate all subsidiaries or other entities in which it has a controlling financial interest and variable interest entities (“VIEs”) of which Artisan is deemed to be the primary beneficiary. The primary beneficiary is deemed to be the entity that has the power to govern the financial and operating policies of the subsidiary so as to obtain benefits from its activities. The consolidated financial statements include the accounts of APAM, all subsidiaries or other entities in which APAM has a direct or indirect controlling financial interest and VIEs of which Artisan is deemed to be the primary beneficiary. All material intercompany balances have been eliminated in consolidation.
	The Company makes initial seed investments in sponsored investment portfolios at the portfolio’s formation. If the seed investment results in a controlling financial interest, APAM consolidates the investment, and the underlying individual securities are accounted for as trading securities. Seed investments in which the Company does not have a controlling financial interest are classified as available-for-sale investments. As of March 31, 2015, APAM does not have a controlling financial interest in any of the funds in which it has made a seed investment.
	Recent accounting pronouncements
	In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes existing accounting standards for revenue recognition and creates a single framework. The new guidance will be effective on January 1, 2017 and requires either a retrospective or a modified retrospective approach to adoption. Early application is prohibited. The Company is currently evaluating its transition method and the potential impact on its consolidated financial statements.
	In August 2014, the FASB issued ASU 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. The ASU will explicitly require management to assess an entity’s ability to continue as a going concern, and to provide related footnote disclosure in certain circumstances. The new guidance will be effective for the year ending December 31, 2016. Early adoption is permitted. The Company does not expect the adoption of this ASU to have an impact on its consolidated financial statements.
	In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis. The
	ASU modifies existing consolidation guidance for determining whether certain legal entities should be consolidated. The ASU eliminates the deferral under ASU 2010-10, Consolidation - Amendments for Certain Investment Funds, and, as a result, the Company must apply the new guidance to all entities, including investment companies. The presumption that a general partner controls a limited partnership has been eliminated. In addition, fees paid to decision makers that meet certain conditions no longer cause the decision makers to consolidate VIEs, in certain instances. The new guidance will be effective on January 1, 2016, and requires either a retrospective or a modified retrospective approach to adoption. Early adoption is permitted. The Company is currently evaluating its transition method and the potential impact on its consolidated financial statements.
	In April 2015 the FASB issued ASU 2015-03, Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs, which requires debt issuance costs to be presented in the balance sheet as a direct deduction from the note liability, rather than presented as an asset. The new guidance will be effective on January 1, 2016, and requires a retrospective approach to adoption. Early adoption is permitted. The Company is currently evaluating the potential impact on its consolidated financial statements.
	In April 2015 the FASB issued ASU 2015-05, Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement, which provides guidance on determining whether a cloud computing arrangement contains a software license that should be accounted for as internal-use software. The new guidance will be effective on January 1, 2016. Early adoption is permitted. The Company does not expect the adoption of this ASU to have an impact on its consolidated financial statements.

Investment_Securities

Investment Securities	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Investment securities	Note 3. Investment Securities
	The disclosures below include details of Artisan’s investments.
		Cost		Unrealized		Unrealized			Fair Value
				Gains		Losses
	31-Mar-15
	Mutual funds	$	5,618	$	1,413	$	(1	)	$	7,030
	31-Dec-14
	Mutual funds	$	5,618	$	1,096	$	(2	)	$	6,712
	Artisan’s investments in mutual funds consist of investments in shares of Artisan Partners Funds, Inc. and Artisan Partners Global Funds plc and are considered to be available-for-sale securities. As a result, unrealized gains (losses) are recorded to other comprehensive income (loss).
	As of March 31, 2015 and December 31, 2014, the total fair value of investments in an unrealized loss position was $39 thousand and $38 thousand, respectively. The $1 thousand and $2 thousand unrealized losses on available-for-sale securities are considered temporary, based on the severity and duration of the unrealized losses. No impairment losses were recorded on these available-for-sale securities.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 4. Fair Value Measurements
	The table below presents information about Artisan’s assets and liabilities that are measured at fair value and the valuation techniques Artisan utilized to determine such fair value.
	In accordance with ASC 820, fair value is defined as the price that Artisan would receive upon selling an investment in an orderly transaction to an independent buyer in the principal or most advantageous market for the investment. The following three-tier fair value hierarchy prioritizes the inputs used in measuring fair value:
	•	Level 1 – Observable inputs such as quoted (unadjusted) market prices in active markets for identical securities.
	•	Level 2 – Other significant observable inputs (including but not limited to quoted prices for similar instruments, interest rates, prepayment speeds, credit risk, etc.).
	•	Level 3—Significant unobservable inputs (including Artisan’s own assumptions in determining fair value).
	The following provides the hierarchy of inputs used to derive fair value of Artisan’s assets and liabilities that are financial instruments as of March 31, 2015 and December 31, 2014:
		Assets and Liabilities at Fair Value
		Total		Level 1		Level 2		Level 3
	31-Mar-15
	Assets
	Cash equivalents	$	76,004	$	76,004	$	—	$	—
	Mutual funds	7,030		7,030		—		—
	31-Dec-14
	Assets
	Cash equivalents	$	44,004	$	44,004	$	—	$	—
	Mutual funds	6,712		6,712		—		—
	Fair values determined based on Level 1 inputs utilize quoted market prices for identical assets. Level 1 assets generally consist of money market funds, marketable open-end mutual funds or Undertakings for Collective Investment in Transferable Securities (“UCITS”). There were no Level 2 or Level 3 assets or liabilities recorded at fair value as of March 31, 2015 and December 31, 2014.
	Artisan’s policy is to recognize transfers in and transfers out of the valuation levels as of the beginning of the reporting period. There were no transfers between Level 1, Level 2 or Level 3 securities during the three months ended March 31, 2015 and 2014.

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Borrowings	Note 5. Borrowings
	Artisan’s borrowings consist of the following as of March 31, 2015 and December 31, 2014:
		Maturity		Outstanding Balance		Interest Rate Per Annum
	Revolving credit agreement	Aug-17		$	—	NA
	Senior notes
	Series A	Aug-17		60,000		4.98	%
	Series B	Aug-19		50,000		5.32	%
	Series C	Aug-22		90,000		5.82	%
	Total borrowings			$	200,000
	The fair value of borrowings was approximately $205.8 million as of March 31, 2015. Fair value was determined based on future cash flows, discounted to present value using current market interest rates. The inputs are categorized as Level 2 in the fair value hierarchy, as defined in Note 4, “Fair Value Measurements”.
	Interest expense incurred on the unsecured notes and revolving credit agreement was $2.8 million for the three months ended March 31, 2015 and 2014.
	As of March 31, 2015, the aggregate maturities of debt obligations, based on their contractual terms, are as follows:
	2015	$	—
	2016	—
	2017	60,000
	2018	—
	2019	50,000
	Thereafter	90,000
		$	200,000

Noncontrolling_Interest_Holdin

Noncontrolling Interest - Holdings	3 Months Ended
	Mar. 31, 2015
Noncontrolling Interest [Abstract]
Noncontrolling interest - Artisan Partners Holdings	Note 6. Noncontrolling interest - Holdings
	Holdings is the predecessor of APAM for accounting purposes, and its consolidated financial statements are Artisan’s historical financial statements for periods prior to March 12, 2013, the date on which APAM became the general partner of Holdings. As of March 31, 2015, APAM held approximately 53% of the economic interests in Holdings.
	Net income (loss) attributable to noncontrolling interests - Artisan Partners Holdings in the Unaudited Consolidated Statements of Operations represents the portion of earnings or loss attributable to the economic interests in Holdings held by the limited partners of Holdings.
	During the three months ended March 31, 2015, APAM’s ownership interest in Holdings increased from 47% to 53%, due to the following transactions:
	•	The issuance of 541,000 Holdings GP units corresponding to 541,000 restricted shares of Class A common stock issued by APAM during the period.
	•	The issuance of 3,831,550 Holdings GP units and cancellation of 3,831,550 Holdings common units, in connection with the 2015 Follow-on Offering.
	•	The issuance of 527,012 Holdings GP units and cancellation of 527,012 Holdings common units, in connection with the Holdings Common Unit Exchanges.
	•	The forfeiture of 54,730 Holdings common units as a result of the termination of employment of employee-partners.
	Since APAM continues to have a controlling interest in Holdings, changes in ownership of Holdings are accounted for as equity transactions. Additional paid-in capital and Noncontrolling interest - Artisan Partners Holdings in the Unaudited Condensed Consolidated Statements of Financial Condition are adjusted to reallocate Holdings’ historical equity to reflect the change in APAM’s ownership of Holdings.
	The reallocation of equity had the following impact on the Consolidated Statements of Financial Condition:
	Statement of Financial Condition	For the Three Months Ended March 31,
		2015			2014
	Additional paid-in capital	$	(1,578	)	$	(3,456	)
	Noncontrolling interest - Artisan Partners Holdings	1,516			3,201
	Accumulated other comprehensive income	28			177
	Deferred tax assets	34			78
	Net balance sheet impact	—			—
	In addition to the reallocation of historical equity, the change in ownership resulted in an increase to deferred tax assets and additional paid in capital of $6.3 million and $2.1 million for the three months ended March 31, 2015 and 2014, respectively.

Variable_and_Voting_Interest_E

Variable and Voting Interest Entities	3 Months Ended
	Mar. 31, 2015
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]
Variable and voting interest entities	Note 7. Variable and Voting Interest Entities
	Artisan Funds and Artisan Global Funds
	Artisan serves as the investment adviser for Artisan Partners Funds, Inc. (“Artisan Funds”), a family of mutual funds registered with the SEC under the Investment Company Act of 1940, and Artisan Partners Global Funds plc (“Artisan Global Funds”), a family of Ireland-based UCITS. Artisan Funds and Artisan Global Funds are corporate entities the business and affairs of which are managed by their respective boards of directors. The shareholders of the funds retain all voting rights, including the right to elect and reelect members of their respective boards of directors. As a result, each of these entities is a voting interest entity (“VOE”). While Artisan holds, in limited cases, direct investments in a fund (which are made on the same terms as are available to other investors and do not represent a majority voting interest in either fund), Artisan does not have a controlling financial interest or a majority voting interest and, as such, does not consolidate these entities.
	Artisan Partners Launch Equity LP
	APLP had an agreement to serve as the investment manager of Artisan Partners Launch Equity Fund LP (“Launch Equity”), which was a private investment partnership in which the investors were certain employees or former employees (or entities beneficially owned by such persons) of Artisan Partners Holdings. Artisan Partners Alternative Investments GP LLC (“Artisan Alternatives”), a wholly-owned subsidiary of Holdings, was the general partner of Launch Equity.
	In December 2014, Launch Equity was liquidated and the net assets were distributed as a return of capital to all limited partners of the fund, including Artisan Partners Alternative Investments GP LLC, which received proceeds of $1 thousand. The fair value of the consideration distributed was equal to the carrying amount of Launch Equity’s net assets on the date of liquidation. As a result, no gain or loss was recorded in connection with the transaction.
	Prior to the dissolution, Launch Equity was determined to be a variable interest entity (“VIE”) which required consolidation within Artisan’s consolidated financial statements. Artisan’s maximum exposure to investment loss from its involvement with Launch Equity was limited to its equity investment of $1 thousand while the potential benefit was limited to the management and incentive fees receivable as investment adviser. Therefore, the gains or losses of Launch Equity have not had a significant impact on Artisan’s results of operations, liquidity or capital resources. Artisan had no right to the benefits from, nor did it bear the risks associated with, Launch Equity’s investments, beyond Artisan’s minimal direct investment in Launch Equity.
	The following tables reflect the impact of consolidating Launch Equity’s results into the Unaudited Consolidated Statement of Operations for the three months ended March 31, 2014.
	Condensed Consolidating Statements of Operations
		Three Months Ended
		31-Mar-14
		Before			Launch Equity			Eliminations			As Reported
		Consolidation
	Total revenues	$	201,917		$	—		$	(125	)	$	201,792
	Total operating expenses	134,765			—			(125		)	134,640
	Operating income (loss)	67,152			—			—			67,152
	Non-operating income (loss)	(3,159		)	—			—			(3,159		)
	Net gain (loss) of Launch Equity	—			(598		)	—			(598		)
	Total non-operating income (loss)	(3,159		)	(598		)	—			(3,757		)
	Income (loss) before income taxes	63,993			(598		)	—			63,395
	Provision for income taxes	11,208			—			—			11,208
	Net income (loss)	52,785			(598		)	—			52,187
	Less: Net income (loss) attributable to noncontrolling interests - Artisan Partners Holdings	44,149			—			—			44,149
	Less: Net income (loss) attributable to noncontrolling interests - Launch Equity	—			(598		)	—			(598		)
	Net income attributable to Artisan Partners Asset Management Inc.	$	8,636		$	—		$	—		$	8,636

Stockholders_Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2015
Stockholders' Equity Note [Abstract]
Shareholder's equity	Note 8. Stockholders' Equity
	APAM - Stockholders’ Equity
	As of March 31, 2015 and December 31, 2014, APAM had the following authorized and outstanding equity:
					Outstanding
		Authorized			31-Mar-15			31-Dec-14		Voting Rights (1)	Economic Rights
	Common shares
	Class A, par value $0.01 per share	500,000,000			39,125,278			34,238,131		1 vote per share	Proportionate
	Class B, par value $0.01 per share	200,000,000			18,349,989			21,463,033		5 votes per share	None
	Class C, par value $0.01 per share	400,000,000			15,926,131			17,226,379		1 vote per share	None
	(1) The Company’s employees to whom Artisan has granted equity have entered into a stockholders agreement with respect to all shares of APAM common stock they have acquired from the Company and any shares they may acquire from the Company in the future, pursuant to which they granted an irrevocable voting proxy to a Stockholders Committee. As of March 31, 2015, Artisan’s employees held 3,229,219 restricted shares of Class A common stock subject to the agreement and all 18,349,989 outstanding shares of Class B common stock.
	APAM is dependent on cash generated by Holdings to fund any dividends. Generally, Holdings will make distributions to all of its partners, including APAM, based on the proportionate ownership each holds in Holdings. APAM will fund dividends to its stockholders from its proportionate share of those distributions after provision for its taxes and other obligations. APAM declared and paid quarterly dividends of $0.60 and $0.55 per share of Class A common stock and special annual dividends of $0.95 and $1.63 per share of Class A common stock during the three months ended March 31, 2015 and 2014, respectively. During the three months ended March 31, 2014, APAM paid dividends of $3.00 per share of outstanding convertible preferred stock.
	APAM issued (cancelled) the following shares during the three months ended March 31, 2015:
		Total Stock		Class A Common Stock(1)		Class B Common Stock		Class C Common Stock
	Balance at December 31, 2014	72,927,543		34,238,131		21,463,033		17,226,379
	2015 Follow-on Offering	—		3,831,550		(2,415,253	)	(1,416,297	)
	Holdings Common Unit Exchanges	—		527,012		(332,538	)	(194,474	)
	Restricted Share Award Grants	541,000		541,000		—		—
	Employee-Partner Terminations	(67,145	)	(12,415	)	(365,253	)	310,523
	Balance at March 31, 2015	73,401,398		39,125,278		18,349,989		15,926,131
	(1) There were 122,990 and 20,612 restricted stock units outstanding at March 31, 2015 and December 31, 2014, respectively.
	Each Class A, Class B, Class D and Class E common unit of Holdings (together with the corresponding share of Class B or Class C common stock) is exchangeable for one share of Class A common stock.
	Upon termination of employment with Artisan, an employee-partner’s vested Class B common units are automatically exchanged for Class E common units; unvested Class B common units are forfeited. The employee-partner’s shares of Class B common stock are canceled and APAM issues the former employee-partner a number of shares of Class C common stock equal to the former employee-partner’s number of Class E common units. The former employee-partner’s Class E common units are exchangeable for Class A common stock subject to the same restrictions and limitations on exchange applicable to the other common units of Holdings.
	Artisan Partners Holdings - Partners’ Equity
	Holdings makes distributions of its net income to the holders of its partnership units for income taxes as required under the terms of the partnership agreement and also makes additional distributions under the terms of the partnership agreement. The distributions are recorded in the financial statements on the declaration date, or on the payment date in lieu of a declaration date.
	Holdings’ partnership distributions totaled $79.4 million and $131.6 million for the three months ended March 31, 2015 and 2014, respectively. The portion of these distributions made to all partners are recorded as a reduction to consolidated stockholders’ equity, with the exception of the portion of distributions made to APAM, which is eliminated upon consolidation. Holdings distributions to APAM totaled $37.3 million and $38.6 million for the three months ended March 31, 2015 and 2014, respectively.

Compensation_and_Benefits

Compensation and Benefits	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Compensation and benefits	Note 9. Compensation and Benefits
	Total compensation and benefits consists of the following:
			For the Three Months Ended March 31,
			2015			2014
	Salaries, incentive compensation and benefits (1)		$	89,904		$	81,597
	Restricted share-based award compensation expense		8,523			4,258
	Total salaries, incentive compensation and benefits		98,427			85,855
	Pre-offering related compensation - share-based awards		10,414			23,637
	Total compensation and benefits		$	108,841		$	109,492
	(1) Excluding restricted share-based award compensation expense
	Incentive compensation
	Cash incentive compensation paid to members of Artisan’s portfolio management teams and members of its distribution teams is generally based on formulas that are tied directly to revenues. These payments are made in the quarter following the quarter in which the incentive was earned with the exception of fourth quarter payments which are paid in the fourth quarter of the year. Cash incentive compensation paid to most other employees is discretionary and subjectively determined based on individual performance and Artisan’s overall results during the applicable year and has historically been paid in the fourth quarter of the year. The cash incentive compensation earned by the named executive officers for the year ended December 31, 2014, was paid in the three months ended March 31, 2015.
	Restricted share-based awards
	Artisan has registered 14,000,000 shares of Class A common stock for issuance under the 2013 Omnibus Incentive Compensation
	Plan (the “Plan”). Pursuant to the Plan, APAM has issued a combination of restricted stock awards and restricted stock units of Class A common stock to employees. The restricted share-based awards generally vest on a pro rata basis over five years. Certain share-based awards will vest upon a combination of both (1) pro-rata annual time vesting and (2) qualifying retirement (as defined in the award agreements). Unvested awards are subject to forfeiture upon termination of employment. Grantees receiving the awards are entitled to dividends on unvested and vested shares and units. As of March 31, 2015, 10,358,885 shares of Class A common stock were reserved and available for issuance under the Plan.
	During the three months ended March 31, 2015, Artisan issued 541,000 restricted stock awards and 80,000 restricted stock units of Class A common stock to employees of the Company. Total compensation expense associated with the January 2015 grant is expected to be approximately $29.5 million.
	Compensation expense related to the restricted share-based awards is recognized based on the estimated grant date fair value, for only those awards expected to vest, on a straight-line basis over the requisite service period of the award. The Company estimated the number of awards expected to vest based, in part, on historical forfeiture rates and also based on management’s expectations of employee turnover. Forfeitures are estimated at the time of grant and revised in subsequent periods, if necessary, based on actual forfeiture activity.
	The following table summarizes the restricted share-based award activity for the three months ended March 31, 2015:
			Weighted-Average Grant Date Fair Value			Number of Awards
	Unvested at January 1, 2015		$	52.59		2,700,634
	Granted		$	48.26		621,000
	Forfeited		$	52.71		(12,415	)
	Vested		$	—		—
	Unvested at March 31, 2015		$	51.78		3,309,219
	Compensation expense recognized related to awards was $8.5 million and $4.3 million for the three months ended March 31, 2015 and 2014, respectively. The unrecognized compensation expense for the unvested awards as of March 31, 2015 was $147.1 million with a weighted average recognition period of 4.2 years remaining.
	Pre-offering related compensation - share-based awards
	Historical Class B share-based awards
	Holdings historically granted Class B share-based awards to certain employees. These awards vested over a period of five years. Prior to the IPO, all vested Class B awards were subject to mandatory redemption on termination of employment for any reason and were reflected as liabilities measured at fair value; unvested Class B awards were forfeited on termination of employment.
	The vested Class B liability awards of a terminated employee were historically redeemed in cash in annual installments, generally over the five years following termination of employment. The change in value of Class B liability awards and distributions to Class B limited partners were treated as compensation expense.
	Historical redemption of Class B awards
	Holdings historically redeemed the Class B awards of partners whose employment was terminated. The redemption value of the awards was determined in accordance with the terms of the grant agreement pursuant to which the award was granted. The remaining redemption payments for Class B awards of partners whose services to Holdings terminated prior to the IPO were $10.4 million and $14.3 million as of March 31, 2015 and December 31, 2014, respectively. Payments of $3.9 million and $3.4 million were made for the three months ended March 31, 2015 and 2014, respectively.
	Modification of Class B share-based awards
	As a part of the IPO Reorganization, the Class B grant agreements were amended to eliminate the cash redemption feature. The amendment was considered a modification under ASC 718 and the Class B awards have been classified as equity awards since such modification. Compensation expense is recorded for unvested Class B awards on a straight-line basis over the remaining vesting period.
	The following table summarizes the activity related to unvested Class B awards for the three months ended March 31, 2015:
		Weighted-Average Grant Date Fair Value			Number of Class B Awards
	Unvested Class B awards at January 1, 2015	$	30		4,045,016
	Granted	—			—
	Forfeited	$	30		(54,730	)
	Vested	$	30		(667,106	)
	Unvested at March 31, 2015	$	30		3,323,180
	Compensation expense recognized related to the unvested Class B awards was $10.4 million and $23.6 million for the three months ended March 31, 2015 and 2014, respectively. The unrecognized compensation expense for the unvested Class B awards as of March 31, 2015, was $75.2 million with a weighted average recognition period of 2.0 years remaining.

Income_Taxes_and_Related_Payme

Income Taxes and Related Payments	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income taxes and related payments	Note 10. Income Taxes and Related Payments
	APAM is subject to U.S. federal and state income taxation on APAM’s allocable portion of the income of Holdings. APAM’s effective income tax rate was lower than the U.S. Federal statutory rate of 35% primarily due to a rate benefit attributable to the fact that approximately 50% of Holdings’ earnings are not subject to corporate level taxes. This favorable impact is partially offset by the impact of certain permanent items, primarily attributable to certain compensation related expenses, that are not deductible for tax purposes. Prior to the IPO Reorganization, none of Holdings’ earnings were subject to U.S. corporate-level taxes.
	In connection with the IPO, APAM entered into two tax receivable agreements (“TRAs”). Under the first TRA, APAM generally is required to pay to a private equity fund controlled by Hellman & Friedman LLC 85% of the applicable cash savings, if any, in U.S. federal, state and local income tax that APAM actually realizes (or is deemed to realize in certain circumstances) as a result of (i) the tax attributes of the preferred units APAM acquired in the merger of a wholly-owned subsidiary of the private equity fund into APAM in March 2013, (ii) net operating losses available as a result of the merger and (iii) tax benefits related to imputed interest.
	Under the second TRA, APAM generally is required to pay to current or former limited partners of Holdings 85% of the applicable cash savings, if any, in U.S. federal, state and local income tax that APAM actually realizes (or is deemed to realize in certain circumstances) as a result of (i) certain tax attributes of their partnership units sold to APAM or exchanged (for shares of Class A common stock or convertible preferred stock) and that are created as a result of the sales or exchanges and payments under the TRAs and (ii) tax benefits related to imputed interest. Under both agreements, APAM generally will retain the benefit of the remaining 15% of the applicable tax savings.
	For purposes of the TRAs, cash savings in tax are calculated by comparing APAM’s actual income tax liability to the amount it would have been required to pay had it not been able to utilize any of the tax benefits subject to the TRAs, unless certain assumptions apply. The TRAs will continue in effect until all such tax benefits have been utilized or expired, unless APAM exercises its right to terminate the agreements or payments under the agreements are accelerated in the event that APAM materially breaches any of its material obligations under the agreements. The actual increase in tax basis, as well as the amount and timing of any payments under these agreements, will vary depending upon a number of factors, including the timing of exchanges by the holders of limited partnership units, the price of the Class A common stock or the value of the convertible preferred stock, as the case may be, at the time of the exchange, whether such exchanges are taxable, the amount and timing of the taxable income APAM generates in the future and the tax rate then applicable and the portion of APAM’s payments under the TRAs constituting imputed interest.
	Payments under the TRAs, if any, will be made pro rata among all TRA counterparties entitled to payments on an annual basis to the extent APAM has sufficient taxable income to utilize the increased depreciation and amortization charges.
	Artisan expects to make payments under the TRAs, to the extent they are required, within 125 days after APAM’s federal income tax return is filed for each fiscal year. Interest on such payments will begin to accrue at a rate equal to one-year LIBOR plus 100 basis points from the due date (without extension) of such tax return.
	Amounts payable under tax receivable agreements is an estimate which is impacted by factors, including but not limited to, expected tax rates, projected taxable income, and projected ownership levels. During the three months ended March 31, 2015, a change in expected state tax rates resulted in an increase to deferred tax assets and TRA payable of $7.7 million and $6.4 million, respectively. The change in the TRA payable estimate is recorded in non-operating income in the Consolidated Statements of Operations.
	The 2015 Follow-On Offering and Holdings Common Unit Exchanges resulted in an increase to deferred tax assets and amounts payable under tax receivable agreements of $118.6 million and $100.8 million, respectively, for the three months ended March 31, 2015.
	Components of the provision for income taxes consist of the following:
		For the Three Months Ended March 31,
		2015			2014
	Current:
	Federal	$	5,040		$	7,610
	State and local	520			981
	Foreign	98			77
	Total	5,658			8,668
	Deferred:
	Federal	6,743			2,776
	State and local	(7,319		)	(236		)
	Total	(576		)	2,540
	Income tax expense	$	5,082		$	11,208
	Net deferred tax assets comprise the following:
		As of March 31, 2015			As of December 31, 2014
	Deferred tax assets:
	Amortizable basis (1)	$	670,879		$	551,952
	Other (2)	16,891			10,444
	Total deferred tax assets	687,770			562,396
	Less: valuation allowance (3)	—			—
	Net deferred tax assets	$	687,770		$	562,396
	(1) Represents the unamortized step-up of tax basis from the merger described above, the purchase of common and preferred units by APAM, and the exchange of common and preferred units for Class A common shares of APAM.
	(2) Represents the net deferred tax assets associated with the merger described above and other miscellaneous deferred tax assets.
	(3) Artisan assessed whether the deferred tax assets would be realizable and determined based on its history of taxable income that the benefits would more likely than not be realized. Accordingly, no valuation allowance is required.
	Accounting standards establish a minimum threshold for recognizing, and a system for measuring, the benefits of income tax return positions in financial statements. There were no uncertain tax positions recorded as of March 31, 2015 and December 31, 2014.
	In the normal course of business, Artisan is subject to examination by federal and certain state, local and foreign tax regulators. As of March 31, 2015, U.S. federal income tax returns for the years 2011 through 2014 are open and therefore subject to examination. State and local tax returns are generally subject to audit from 2010 to 2014. Foreign tax returns are generally subject to audit from 2010 to 2014.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Comprehensive Income (Loss) [Text Block]	Note 11. Accumulated Other Comprehensive Income (loss)
	Accumulated other comprehensive income (loss), net of tax, in the accompanying Condensed Consolidated Statements of Financial Condition represents the portion of accumulated other comprehensive income attributable to APAM, and consists of the following:
		As of March 31, 2015			As of December 31, 2014
	Unrealized gain on investments	$	477		$	326
	Foreign currency translation	(362		)	(120		)
	Accumulated Other Comprehensive Income (Loss)	$	115		$	206
	Comprehensive income (loss) attributable to noncontrolling interests - Artisan Partners Holdings in the Consolidated Statements of Comprehensive Income (Loss) represents the portion of comprehensive income (loss) attributable to the economic interests in Holdings held by the limited partners of Holdings.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	Note 12. Earnings (Loss) Per Share
	Basic earnings per share is computed by dividing income available to Class A common stockholders by the weighted average number of Class A common shares outstanding during the period. Unvested restricted share-based awards are excluded from the number of Class A common shares outstanding for the basic earnings per share calculation because the shares have not yet been earned by the employees. Income available to Class A common stockholders is computed by reducing net income attributable to APAM by dividends declared or paid to convertible preferred stockholders during the period and earnings (distributed and undistributed) allocated to participating securities, according to their respective rights to participate in those earnings. Class B and Class C common shares do not share in profits of APAM and therefore are not reflected in the calculations.
	The consideration Artisan paid to purchase shares of its convertible preferred stock in March 2014 exceeded the carrying amount of the shares of convertible preferred stock on Artisan’s consolidated balance sheet by $22.7 million, which is subtracted from net income as a deemed dividend to arrive at income available to common stockholders in the earnings per share calculation. The purchase of subsidiary preferred equity in March 2014 resulted in a similar deemed dividend, which also reduced net income available to common stockholders.
	The computation of basic and diluted earnings per share under the two-class method for the three months ended March 31, 2015 and 2014 were as follows:
		For the Three Months Ended March 31,
	Basic and Diluted Earnings Per Share	2015			2014
	Numerator:
	Net income attributable to APAM	$	19,514		$	8,636
	Less: Convertible preferred stock deemed dividends	—			22,694
	Less: Subsidiary preferred equity deemed dividends	—			25,155
	Less: Allocation to participating securities	5,557			6,980
	Net income (loss) available to common stockholders	$	13,957		$	(46,193	)
	Denominator:
	Weighted average shares outstanding	32,633,481			20,214,242
	Earnings (loss) per share	$	0.43		$	(2.29	)
	Diluted earnings per share is computed by increasing the denominator by the amount of additional Class A common shares that would have been outstanding if all potential Class A common shares had been issued. The numerator is also increased for the net income allocated to the potential Class A common shares. For periods with a net loss available to common stockholders, all potential common shares are considered anti-dilutive.
	The Holdings limited partnership units are anti-dilutive primarily due to the impact of public company expenses and unrecognized share-based compensation expense. Unvested restricted awards are anti-dilutive, primarily because the unvested shares are considered participating securities.
	The following table summarizes the weighted-average shares outstanding that are excluded from the calculation of diluted earnings per share because their effect would have been anti-dilutive:
		For the Three Months Ended March 31,
	Anti- Dilutive Weighted Average Shares Outstanding	2015		2014
	Holdings limited partnership units	37,609,365		48,675,297
	Convertible preferred stock	—		1,041,248
	Unvested restricted share-based awards	2,991,457		1,606,748
	Total	40,600,822		51,323,293

Indemnifications

Indemnifications	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Indemnifications	Note 13. Indemnifications
	In the normal course of business, APAM enters into agreements that include indemnities in favor of third parties. Holdings has also agreed to indemnify APAM as its general partner, Artisan Investment Corporation (“AIC”) as its former general partner, the directors and officers of APAM, the directors and officers of AIC as its former general partner, the members of its former Advisory Committee, and its partners, directors, officers, employees and agents. Holdings’ subsidiaries may also have similar agreements to indemnify their respective general partner(s), directors, officers, directors and officers of their general partner(s), partners, members, employees, and agents. The Company’s maximum exposure under these arrangements is unknown, as this would involve future claims that may be made against us that have not yet occurred. APAM maintains insurance policies that may provide coverage against certain claims under these indemnities.

Related_Party_Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2015
Related Party Transactions [Abstract]
Related party transactions	Note 14. Related Party Transactions
	Artisan engages in transactions with its affiliates in the ordinary course of business.
	Affiliate transactions—Artisan Funds
	Artisan has an agreement to serve as the investment manager of Artisan Funds, with which certain of Artisan employees are affiliated. Under the terms of the agreement, which generally is reviewed and continued by the board of directors of Artisan Funds annually, a fee is paid to Artisan based on an annual percentage of the average daily net assets of each Artisan Fund ranging from 0.63% to 1.25%. Artisan generally collects revenues related to these services on the last business day of each month and records them in Management Fees in the Consolidated Statement of Operations. Artisan has contractually agreed to waive its management fees or reimburse for expenses incurred to the extent necessary to limit annualized ordinary operating expenses incurred by certain of the Artisan Funds to not more than 1.50% of average daily net assets, and 1.25% of the fund’s average daily net assets for Artisan High Income Fund. In addition, Artisan may voluntarily waive fees or reimburse any of the Artisan Funds for other expenses. The officers and a director of Artisan Funds who are affiliated with Artisan receive no compensation from the funds.
	Fees for managing the Funds and amounts waived or reimbursed by Artisan for fees and expenses (including management fees) are as follows:
		For the Three Months Ended March 31,
		2015		2014
	Investment management fees:
	Artisan Funds	$	134,307	$	136,586
	Fee waiver / expense reimbursement:
	Artisan Funds	$	—	$	60
	Affiliate transactions—Artisan Global Funds
	Artisan has agreements to serve as the investment manager and promoter of Artisan Global Funds, with which certain Artisan employees are affiliated. Under the terms of these agreements, a fee is paid based on an annual percentage of the average daily net assets of each fund ranging from 0.75% to 1.80%. Artisan reimburses each sub-fund of Artisan Global Funds to the extent that sub-fund’s expenses, not including Artisan’s fee, exceed certain levels, which range from 0.10% to 0.20%. In addition, Artisan may voluntarily waive fees or reimburse any of the Artisan Global Funds for other expenses. The directors of Artisan Global Funds who are affiliated with Artisan receive no compensation from the funds. Accounts receivable included $1.3 million due from Artisan Global Funds as of March 31, 2015 and December 31, 2014.
	Fees for managing Artisan Global Funds and amounts reimbursed to Artisan Global Funds by Artisan are as follows:
		For the Three Months Ended March 31,
		2015		2014
	Investment management fees:
	Artisan Global Funds	$	3,724	$	3,239
	Fee waiver / expense reimbursement:
	Artisan Global Funds	$	63	$	82
	Affiliate transactions—Launch Equity
	Prior to the dissolution described in Note 7, Artisan had an agreement to serve as the investment manager of Launch Equity. Under the terms of Artisan’s agreement with Launch Equity, Artisan earned a quarterly fee based on the value of the closing capital account of each limited partner for the quarter, at the rate of 1.00% (annualized). At Artisan’s discretion, the fee was waived and certain expenses reimbursed to the extent they exceeded a certain level. Artisan waived 100% of the quarterly fee and reimbursed Launch Equity for all operating expenses, and Artisan also waived other expenses as well. Expense reimbursements totaled $38 thousand for the three months ended March 31, 2014.
	Affiliate transactions—AIC
	Artisan had cost sharing arrangements with entities controlled by Andrew A. Ziegler (APAM’s Chairman of the Board and former Artisan employee) and Carlene M. Ziegler (also a former Artisan employee), pursuant to which the Ziegler entities reimbursed Artisan for the costs associated with three employees using Artisan’s office space while they transitioned to new facilities. This transition was completed during June 2014. In addition, Artisan has obtained and paid for insurance policies covering potential liability AIC may incur as the prior general partner of Holdings. At December 31, 2014 and March 31, 2015, no amounts were due from the Ziegler entities related to these transactions.

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent events	Note 15. Subsequent Events
	Distributions and dividends
	On April 22, 2015, the board of directors of APAM declared a distribution by Artisan Partners Holdings of $32.8 million to holders of Artisan Partners Holdings partnership units, including APAM. On the same date, the board declared a quarterly dividend of $0.60 per share of APAM’s Class A common stock. The APAM dividend is payable on May 29, 2015, to shareholders of record as of May 15, 2015.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Policy Text Block [Abstract]
Basis of presentation	Basis of presentation
	The accompanying financial statements are unaudited. In the opinion of management, all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of such consolidated financial statements have been included. Such interim results are not necessarily indicative of full year results.
	The consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial reporting and accordingly they do not include all of the information and footnotes required in the annual consolidated financial statements and accompanying footnotes. The year-end condensed balance sheet data was derived from audited financial statements, but does not include all disclosures required by U.S. GAAP. As a result, the interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in APAM’s latest annual report on Form 10-K.
	The accompanying financial statements were prepared in accordance with U.S. GAAP and related rules and regulations of the SEC. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates or assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from these estimates or assumptions.
Principles of consolidation	Principles of consolidation
	Artisan’s policy is to consolidate all subsidiaries or other entities in which it has a controlling financial interest and variable interest entities (“VIEs”) of which Artisan is deemed to be the primary beneficiary. The primary beneficiary is deemed to be the entity that has the power to govern the financial and operating policies of the subsidiary so as to obtain benefits from its activities. The consolidated financial statements include the accounts of APAM, all subsidiaries or other entities in which APAM has a direct or indirect controlling financial interest and VIEs of which Artisan is deemed to be the primary beneficiary. All material intercompany balances have been eliminated in consolidation.
	The Company makes initial seed investments in sponsored investment portfolios at the portfolio’s formation. If the seed investment results in a controlling financial interest, APAM consolidates the investment, and the underlying individual securities are accounted for as trading securities. Seed investments in which the Company does not have a controlling financial interest are classified as available-for-sale investments. As of March 31, 2015, APAM does not have a controlling financial interest in any of the funds in which it has made a seed investment.
Recent accounting pronouncements	Recent accounting pronouncements
	In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes existing accounting standards for revenue recognition and creates a single framework. The new guidance will be effective on January 1, 2017 and requires either a retrospective or a modified retrospective approach to adoption. Early application is prohibited. The Company is currently evaluating its transition method and the potential impact on its consolidated financial statements.
	In August 2014, the FASB issued ASU 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. The ASU will explicitly require management to assess an entity’s ability to continue as a going concern, and to provide related footnote disclosure in certain circumstances. The new guidance will be effective for the year ending December 31, 2016. Early adoption is permitted. The Company does not expect the adoption of this ASU to have an impact on its consolidated financial statements.
	In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis. The
	ASU modifies existing consolidation guidance for determining whether certain legal entities should be consolidated. The ASU eliminates the deferral under ASU 2010-10, Consolidation - Amendments for Certain Investment Funds, and, as a result, the Company must apply the new guidance to all entities, including investment companies. The presumption that a general partner controls a limited partnership has been eliminated. In addition, fees paid to decision makers that meet certain conditions no longer cause the decision makers to consolidate VIEs, in certain instances. The new guidance will be effective on January 1, 2016, and requires either a retrospective or a modified retrospective approach to adoption. Early adoption is permitted. The Company is currently evaluating its transition method and the potential impact on its consolidated financial statements.
	In April 2015 the FASB issued ASU 2015-03, Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs, which requires debt issuance costs to be presented in the balance sheet as a direct deduction from the note liability, rather than presented as an asset. The new guidance will be effective on January 1, 2016, and requires a retrospective approach to adoption. Early adoption is permitted. The Company is currently evaluating the potential impact on its consolidated financial statements.
	In April 2015 the FASB issued ASU 2015-05, Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement, which provides guidance on determining whether a cloud computing arrangement contains a software license that should be accounted for as internal-use software. The new guidance will be effective on January 1, 2016. Early adoption is permitted. The Company does not expect the adoption of this ASU to have an impact on its consolidated financial statements.

Investment_Securities_Tables

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Schedule of available-for-sale securities	The disclosures below include details of Artisan’s investments.
		Cost		Unrealized		Unrealized			Fair Value
				Gains		Losses
	31-Mar-15
	Mutual funds	$	5,618	$	1,413	$	(1	)	$	7,030
	31-Dec-14
	Mutual funds	$	5,618	$	1,096	$	(2	)	$	6,712

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair value hierarchy of assets and liabilities	The following provides the hierarchy of inputs used to derive fair value of Artisan’s assets and liabilities that are financial instruments as of March 31, 2015 and December 31, 2014:
		Assets and Liabilities at Fair Value
		Total		Level 1		Level 2		Level 3
	31-Mar-15
	Assets
	Cash equivalents	$	76,004	$	76,004	$	—	$	—
	Mutual funds	7,030		7,030		—		—
	31-Dec-14
	Assets
	Cash equivalents	$	44,004	$	44,004	$	—	$	—
	Mutual funds	6,712		6,712		—		—

Borrowings_Tables

Borrowings (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Schedule of borrowings	Artisan’s borrowings consist of the following as of March 31, 2015 and December 31, 2014:
		Maturity		Outstanding Balance		Interest Rate Per Annum
	Revolving credit agreement	Aug-17		$	—	NA
	Senior notes
	Series A	Aug-17		60,000		4.98	%
	Series B	Aug-19		50,000		5.32	%
	Series C	Aug-22		90,000		5.82	%
	Total borrowings			$	200,000
Aggregate maturities of debt obligations	As of March 31, 2015, the aggregate maturities of debt obligations, based on their contractual terms, are as follows:
	2015	$	—
	2016	—
	2017	60,000
	2018	—
	2019	50,000
	Thereafter	90,000
		$	200,000

Noncontrolling_Interest_Holdin1

Noncontrolling Interest - Holdings Changes in Ownership Impact on Equity (Tables)	3 Months Ended
	Mar. 31, 2015
Noncontrolling Interest [Abstract]
Change in ownership
	Statement of Financial Condition	For the Three Months Ended March 31,
		2015			2014
	Additional paid-in capital	$	(1,578	)	$	(3,456	)
	Noncontrolling interest - Artisan Partners Holdings	1,516			3,201
	Accumulated other comprehensive income	28			177
	Deferred tax assets	34			78
	Net balance sheet impact	—			—

Variable_and_Voting_Interest_E1

Variable and Voting Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2015
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]
Condensed Consolidating Statements of Operations	The following tables reflect the impact of consolidating Launch Equity’s results into the Unaudited Consolidated Statement of Operations for the three months ended March 31, 2014.
	Condensed Consolidating Statements of Operations
		Three Months Ended
		31-Mar-14
		Before			Launch Equity			Eliminations			As Reported
		Consolidation
	Total revenues	$	201,917		$	—		$	(125	)	$	201,792
	Total operating expenses	134,765			—			(125		)	134,640
	Operating income (loss)	67,152			—			—			67,152
	Non-operating income (loss)	(3,159		)	—			—			(3,159		)
	Net gain (loss) of Launch Equity	—			(598		)	—			(598		)
	Total non-operating income (loss)	(3,159		)	(598		)	—			(3,757		)
	Income (loss) before income taxes	63,993			(598		)	—			63,395
	Provision for income taxes	11,208			—			—			11,208
	Net income (loss)	52,785			(598		)	—			52,187
	Less: Net income (loss) attributable to noncontrolling interests - Artisan Partners Holdings	44,149			—			—			44,149
	Less: Net income (loss) attributable to noncontrolling interests - Launch Equity	—			(598		)	—			(598		)
	Net income attributable to Artisan Partners Asset Management Inc.	$	8,636		$	—		$	—		$	8,636

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2015
Stockholders' Equity Note [Abstract]
Authorized and outstanding equity	As of March 31, 2015 and December 31, 2014, APAM had the following authorized and outstanding equity:
					Outstanding
		Authorized			31-Mar-15			31-Dec-14		Voting Rights (1)	Economic Rights
	Common shares
	Class A, par value $0.01 per share	500,000,000			39,125,278			34,238,131		1 vote per share	Proportionate
	Class B, par value $0.01 per share	200,000,000			18,349,989			21,463,033		5 votes per share	None
	Class C, par value $0.01 per share	400,000,000			15,926,131			17,226,379		1 vote per share	None
	(1) The Company’s employees to whom Artisan has granted equity have entered into a stockholders agreement with respect to all shares of APAM common stock they have acquired from the Company and any shares they may acquire from the Company in the future, pursuant to which they granted an irrevocable voting proxy to a Stockholders Committee. As of March 31, 2015, Artisan’s employees held 3,229,219 restricted shares of Class A common stock subject to the agreement and all 18,349,989 outstanding shares of Class B common stock.
Issuance (Cancellation) of Shares Disclosure
		Total Stock		Class A Common Stock(1)		Class B Common Stock		Class C Common Stock
	Balance at December 31, 2014	72,927,543		34,238,131		21,463,033		17,226,379
	2015 Follow-on Offering	—		3,831,550		(2,415,253	)	(1,416,297	)
	Holdings Common Unit Exchanges	—		527,012		(332,538	)	(194,474	)
	Restricted Share Award Grants	541,000		541,000		—		—
	Employee-Partner Terminations	(67,145	)	(12,415	)	(365,253	)	310,523
	Balance at March 31, 2015	73,401,398		39,125,278		18,349,989		15,926,131
	(1) There were 122,990 and 20,612 restricted stock units outstanding at March 31, 2015 and December 31, 2014, respectively.

Compensation_and_Benefits_Tabl

Compensation and Benefits (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Components of Compensation Expense
			For the Three Months Ended March 31,
			2015			2014
	Salaries, incentive compensation and benefits (1)		$	89,904		$	81,597
	Restricted share-based award compensation expense		8,523			4,258
	Total salaries, incentive compensation and benefits		98,427			85,855
	Pre-offering related compensation - share-based awards		10,414			23,637
	Total compensation and benefits		$	108,841		$	109,492
	(1) Excluding restricted share-based award compensation expense
Restricted Share-Based Award Activity	The following table summarizes the restricted share-based award activity for the three months ended March 31, 2015:
			Weighted-Average Grant Date Fair Value			Number of Awards
	Unvested at January 1, 2015		$	52.59		2,700,634
	Granted		$	48.26		621,000
	Forfeited		$	52.71		(12,415	)
	Vested		$	—		—
	Unvested at March 31, 2015		$	51.78		3,309,219
Class B Award Activity	The following table summarizes the activity related to unvested Class B awards for the three months ended March 31, 2015:
		Weighted-Average Grant Date Fair Value			Number of Class B Awards
	Unvested Class B awards at January 1, 2015	$	30		4,045,016
	Granted	—			—
	Forfeited	$	30		(54,730	)
	Vested	$	30		(667,106	)
	Unvested at March 31, 2015	$	30		3,323,180

Income_Taxes_and_Related_Payme1

Income Taxes and Related Payments (Tables)	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Components of the provision for income taxes	Components of the provision for income taxes consist of the following:
		For the Three Months Ended March 31,
		2015			2014
	Current:
	Federal	$	5,040		$	7,610
	State and local	520			981
	Foreign	98			77
	Total	5,658			8,668
	Deferred:
	Federal	6,743			2,776
	State and local	(7,319		)	(236		)
	Total	(576		)	2,540
	Income tax expense	$	5,082		$	11,208
Components of deferred tax assets	Net deferred tax assets comprise the following:
		As of March 31, 2015			As of December 31, 2014
	Deferred tax assets:
	Amortizable basis (1)	$	670,879		$	551,952
	Other (2)	16,891			10,444
	Total deferred tax assets	687,770			562,396
	Less: valuation allowance (3)	—			—
	Net deferred tax assets	$	687,770		$	562,396
	(1) Represents the unamortized step-up of tax basis from the merger described above, the purchase of common and preferred units by APAM, and the exchange of common and preferred units for Class A common shares of APAM.
	(2) Represents the net deferred tax assets associated with the merger described above and other miscellaneous deferred tax assets.
	(3) Artisan assessed whether the deferred tax assets would be realizable and determined based on its history of taxable income that the benefits would more likely than not be realized. Accordingly, no valuation allowance is required.

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Accumulated other comprehensive income (loss), net of tax, in the accompanying Condensed Consolidated Statements of Financial Condition represents the portion of accumulated other comprehensive income attributable to APAM, and consists of the following:
		As of March 31, 2015			As of December 31, 2014
	Unrealized gain on investments	$	477		$	326
	Foreign currency translation	(362		)	(120		)
	Accumulated Other Comprehensive Income (Loss)	$	115		$	206

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table Text Block]
		For the Three Months Ended March 31,
	Basic and Diluted Earnings Per Share	2015			2014
	Numerator:
	Net income attributable to APAM	$	19,514		$	8,636
	Less: Convertible preferred stock deemed dividends	—			22,694
	Less: Subsidiary preferred equity deemed dividends	—			25,155
	Less: Allocation to participating securities	5,557			6,980
	Net income (loss) available to common stockholders	$	13,957		$	(46,193	)
	Denominator:
	Weighted average shares outstanding	32,633,481			20,214,242
	Earnings (loss) per share	$	0.43		$	(2.29	)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
		For the Three Months Ended March 31,
	Anti- Dilutive Weighted Average Shares Outstanding	2015		2014
	Holdings limited partnership units	37,609,365		48,675,297
	Convertible preferred stock	—		1,041,248
	Unvested restricted share-based awards	2,991,457		1,606,748
	Total	40,600,822		51,323,293

Related_Party_Transactions_Tab

Related Party Transactions (Tables)	3 Months Ended
	Mar. 31, 2015
Artisan Funds
Related Party Transaction [Line Items]
Schedule of related party transactions	Fees for managing the Funds and amounts waived or reimbursed by Artisan for fees and expenses (including management fees) are as follows:
		For the Three Months Ended March 31,
		2015		2014
	Investment management fees:
	Artisan Funds	$	134,307	$	136,586
	Fee waiver / expense reimbursement:
	Artisan Funds	$	—	$	60
Artisan Global Funds
Related Party Transaction [Line Items]
Schedule of related party transactions	Fees for managing Artisan Global Funds and amounts reimbursed to Artisan Global Funds by Artisan are as follows:
		For the Three Months Ended March 31,
		2015		2014
	Investment management fees:
	Artisan Global Funds	$	3,724	$	3,239
	Fee waiver / expense reimbursement:
	Artisan Global Funds	$	63	$	82

Nature_of_Business_and_Organiz1

Nature of Business and Organization (Details) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 09, 2015	Mar. 31, 2015	Mar. 31, 2015	Mar. 31, 2014	Mar. 09, 2015	Dec. 31, 2014
			investment_teams
			Investment_strategies
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of autonomous investment teams			7
Number of investment strategies			14
Class of Stock [Line Items]
Share Price	$46.08				$46.08
Stock Repurchased and Retired During Period, Shares			67,145
Establishment of amounts payable under tax receivable agreements	$89,400	$100,800	$100,840	$244,262
APAM economic interest in Artisan Partners Holdings LP (as a percent)		53.00%	53.00%			47.00%
Establishment of deferred tax assets	105,100	118,600	124,887	287,367
Common Class A [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	3,831,550
Capital Units [Member]
Class of Stock [Line Items]
Stock Repurchased and Retired During Period, Shares	3,831,550
Conversion of Stock, Shares Converted			527,012
General Partnership Units [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	3,831,550		527,012
Establishment of amounts payable under tax receivable agreements		11,500
Establishment of deferred tax assets		$13,500
Capital Unit, Class A [Member]
Class of Stock [Line Items]
Conversion of Stock, Shares Converted	194,474
Capital Unit, Class B [Member]
Class of Stock [Line Items]
Conversion of Stock, Shares Converted	332,538

Investment_Securities_Details

Investment Securities (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Cost	$5,618	$5,618
Unrealized Gains	1,413	1,096
Unrealized Losses	-1	-2
Fair Value	7,030	6,712
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	39	38
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Third Party Guarantees, Amount	$0

Fair_Value_Measurements_Fair_v

Fair Value Measurements - Fair value hierarchy of assets and liabilities (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$76,004	$44,004
Mutual funds	7,030	6,712
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	76,004	44,004
Mutual funds	7,030	6,712
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Mutual funds	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Mutual funds	$0	$0

Borrowings_Components_of_Borro

Borrowings - Components of Borrowings (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Debt Instrument [Line Items]
Total outstanding balance	$200,000	$200,000
Senior notes | Series A
Debt Instrument [Line Items]
Total outstanding balance	60,000	60,000
Interest rate per annum	4.98%	4.98%
Senior notes | Series B
Debt Instrument [Line Items]
Total outstanding balance	50,000	50,000
Interest rate per annum	5.32%	5.32%
Senior notes | Series C
Debt Instrument [Line Items]
Total outstanding balance	90,000	90,000
Interest rate per annum	5.82%	5.82%
Revolving credit agreement
Debt Instrument [Line Items]
Total outstanding balance	$0	$0

Borrowings_Aggregate_Maturitie

Borrowings - Aggregate Maturities of Debt Obligations (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]
2015	$0
2016	0
2017	60,000
2018	0
2019	50,000
Thereafter	90,000
Borrowings	$200,000	$200,000

Borrowings_Additional_Informat

Borrowings - Additional Information (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Debt Instrument [Line Items]
Interest expense incurred on debt and credit facilities	$2.80
Level 2
Debt Instrument [Line Items]
Borrowings fair value	$205.80

Noncontrolling_Interest_Holdin2

Noncontrolling Interest - Holdings (Details) (USD $)	3 Months Ended		0 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 09, 2015	Dec. 31, 2014
Noncontrolling Interest [Line Items]
APAM economic interest in Artisan Partners Holdings LP (as a percent)	53.00%			47.00%
Stock Repurchased and Retired During Period, Shares	67,145
Cumulative impact of changes in ownership of Artisan Partners Holdings, LP, net of tax	$0	$0
Additional Paid-in Capital
Noncontrolling Interest [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings, LP, net of tax	1,578	3,456
Noncontrolling Interest
Noncontrolling Interest [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings, LP, net of tax	-1,516	-3,201
Accumulated Other Comprehensive Income
Noncontrolling Interest [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings, LP, net of tax	-28	-177
Deferred Tax Assets [Member]
Noncontrolling Interest [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings, LP, net of tax	34	78
Class A Common Stock
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues			3,831,550
General Partnership Units [Member]
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues	527,012		3,831,550
Capital Units [Member]
Noncontrolling Interest [Line Items]
Stock Repurchased and Retired During Period, Shares			3,831,550
Conversion of Stock, Shares Converted	527,012
Restricted Stock [Member]
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues	541,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	-12,415
Restricted Stock [Member] | Class A Common Stock
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues	541,000
Restricted Stock [Member] | General Partnership Units [Member]
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues	541,000
Class B Liability Awards [Member]
Noncontrolling Interest [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	-54,730
Deferred Tax Assets [Member] | Additional Paid-in Capital
Noncontrolling Interest [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings, LP, net of tax	($6,300)	($2,100)

Variable_and_Voting_Interest_E2

Variable and Voting Interest Entities - Condensed Consolidating Statements of Operations (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Total revenues	$203,575	$201,792
Total operating expenses	135,746	134,640
Operating income	67,829	67,152
Non-operating income (loss)		-3,159
Net gain (loss) of Launch Equity		-598
Total non-operating income (loss)	-9,301	-3,757
Income (loss) before income taxes	58,528	63,395
Provision for income taxes	5,082	11,208
Net income	53,446	52,187
Less: Net income attributable to noncontrolling interests - Artisan Partners Holdings	33,932	44,149
Less: Net income (loss) attributable to noncontrolling interests - Launch Equity	0	-598
Net income attributable to Artisan Partners Asset Management Inc.	19,514	8,636
Eliminations
Total revenues		-125
Total operating expenses		-125
Operating income		0
Non-operating income (loss)		0
Net gain (loss) of Launch Equity		0
Total non-operating income (loss)		0
Income (loss) before income taxes		0
Provision for income taxes		0
Net income		0
Less: Net income attributable to noncontrolling interests - Artisan Partners Holdings		0
Less: Net income (loss) attributable to noncontrolling interests - Launch Equity		0
Net income attributable to Artisan Partners Asset Management Inc.		0
Before Consolidation
Total revenues		201,917
Total operating expenses		134,765
Operating income		67,152
Non-operating income (loss)		-3,159
Net gain (loss) of Launch Equity		0
Total non-operating income (loss)		-3,159
Income (loss) before income taxes		63,993
Provision for income taxes		11,208
Net income		52,785
Less: Net income attributable to noncontrolling interests - Artisan Partners Holdings		44,149
Less: Net income (loss) attributable to noncontrolling interests - Launch Equity		0
Net income attributable to Artisan Partners Asset Management Inc.		8,636
Parent Investment in Consolidated Variable Interest Entity	1
Launch Equity
Total revenues		0
Total operating expenses		0
Operating income		0
Non-operating income (loss)		0
Net gain (loss) of Launch Equity		-598
Total non-operating income (loss)		-598
Income (loss) before income taxes		-598
Provision for income taxes		0
Net income		-598
Less: Net income attributable to noncontrolling interests - Artisan Partners Holdings		0
Less: Net income (loss) attributable to noncontrolling interests - Launch Equity		-598
Net income attributable to Artisan Partners Asset Management Inc.		$0

Stockholders_Equity_Details

Stockholders' Equity (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Class of Stock [Line Items]
Common stock, shares outstanding	73,401,398		72,927,543
Dividends declared per Class A common share	$1.55	$2.18
Preferred Stock, Dividends, Per Share, Cash Paid		$3
Partnership distributions	$79.40	$131.60
Class A Common Stock
Class of Stock [Line Items]
Common stock, shares authorized	500,000,000		500,000,000
Common stock, shares outstanding	39,125,278		34,238,131
Common stock votes per share	1
Common stock, par value per share	$0.01		0.01
Class B Common Stock
Class of Stock [Line Items]
Common stock, shares authorized	200,000,000		200,000,000
Common stock, shares outstanding	18,349,989		21,463,033
Common stock votes per share	5
Common stock, par value per share	$0.01		0.01
Class C Common Stock
Class of Stock [Line Items]
Common stock, shares authorized	400,000,000		400,000,000
Common stock, shares outstanding	15,926,131		17,226,379
Common stock votes per share	1
Common stock, par value per share	$0.01		0.01
Artisan Partners Asset Management [Member]
Class of Stock [Line Items]
Partnership distributions	$37.30	$38.60
Restricted Stock Units (RSUs) [Member]
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	122,990		20,612
Quarterly Cash Dividend [Member]
Class of Stock [Line Items]
Dividends declared per Class A common share	$0.60	$0.55
Special Annual Dividend [Member]
Class of Stock [Line Items]
Dividends declared per Class A common share	$0.95	$1.63

Stockholders_Equity_Share_Acti

Stockholders' Equity Share Activity by Class of Stock (Details)	3 Months Ended	0 Months Ended	1 Months Ended
	Mar. 31, 2015	Mar. 09, 2015	Mar. 31, 2015	Dec. 31, 2014
Common stock, shares outstanding	73,401,398		73,401,398	72,927,543
Stock Repurchased and Retired During Period, Shares	-67,145
Class A Common Stock
Common stock, shares outstanding	39,125,278		39,125,278	34,238,131
Stock Issued During Period, Shares, New Issues		3,831,550
Class B Common Stock
Common stock, shares outstanding	18,349,989		18,349,989	21,463,033
Class C Common Stock
Common stock, shares outstanding	15,926,131		15,926,131	17,226,379
Common Stock [Member] | Class A Common Stock
Stock Issued During Period, Shares, New Issues		3,831,550
Common Stock [Member] | Class B Common Stock
Stock Repurchased and Retired During Period, Shares		-2,415,253
Common Stock [Member] | Class C Common Stock
Stock Repurchased and Retired During Period, Shares		-1,416,297
Common Stock [Member] | Class A Common Stock
Stock Issued During Period, Shares, New Issues			527,012
Common Stock [Member] | Class B Common Stock
Stock Repurchased and Retired During Period, Shares			-332,538
Common Stock [Member] | Class C Common Stock
Stock Repurchased and Retired During Period, Shares			-194,474
Restricted Stock [Member]
Stock Issued During Period, Shares, New Issues	541,000
Restricted Stock [Member] | Class A Common Stock
Stock Issued During Period, Shares, New Issues	541,000
Restricted Stock [Member] | Class B Common Stock
Stock Repurchased and Retired During Period, Shares	0
Restricted Stock [Member] | Class C Common Stock
Stock Repurchased and Retired During Period, Shares	0
Common Stock [Member] | Class A Common Stock
Stock Repurchased and Retired During Period, Shares	-12,415
Common Stock [Member] | Class B Common Stock
Stock Repurchased and Retired During Period, Shares	-365,253
Common Stock [Member] | Class C Common Stock
Stock Issued During Period, Shares, New Issues	310,523

Compensation_and_Benefits_Comp

Compensation and Benefits - Components of expense (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Salaries, incentive compensation and benefits	$89,904	$81,597
Restricted share-based award compensation expense	19,605	28,278
Total salaries, incentive compensation and benefits	98,427	85,855
Pre-offering related compensation - share-based awards	10,414	23,637
Total compensation and benefits	108,841	109,492
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted share-based award compensation expense	$8,523	$4,258

Compensation_and_Benefits_Rest

Compensation and Benefits - Restricted Share Activity (Details) (Restricted Stock [Member], USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested - Weighted Average Grant Date Fair Value	$51.78	$52.59
Unvested - Number of Awards	3,309,219	2,700,634
Granted - Weighted Average Grant Date Fair Value	$48.26
Granted - Number of Awards	-621,000
Forfeited - Weighted Average Grant Date Fair Value	$52.71
Forfeited - Number of Awards	-12,415
Vested - Weighted Average Grant Date Fair Value	$0
Vested - Number of Awards	0

Compensation_and_Benefits_PreO

Compensation and Benefits - Pre-Offering Related Compensation (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-offering related compensation - share-based awards	$10,414	$23,637

Compensation_and_Benefits_Clas

Compensation and Benefits - Class B Awards Activity (Details) (Class B Liability Awards [Member], USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Class B Liability Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested - Weighted Average Grant Date Fair Value	$30	$30
Unvested - Number of Awards	3,323,180	4,045,016
Granted - Weighted Average Grant Date Fair Value	$0
Granted - Number of Awards	0
Forfeited - Weighted Average Grant Date Fair Value	$30
Forfeited - Number of Awards	-54,730
Vested - Weighted Average Grant Date Fair Value	$30
Vested - Number of Awards	-667,106

Compensation_and_Benefits_Addi

Compensation and Benefits - Additional information (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 09, 2015	Dec. 31, 2014	Feb. 17, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	14,000,000
Restricted share-based award compensation expense	$19,605,000	$28,278,000
Stock Based Awards Redemption Amount	10,400,000			14,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	10,358,885
StockBasedAwardPayment	3,900,000	3,400,000
Compensation expense recognized	10,414,000	23,637,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	147,100,000				29,500,000
Restricted share-based award compensation expense	8,523,000	4,258,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	4 years 2 months 13 days
Stock Issued During Period, Shares, New Issues	541,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	621,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	80,000
Class B Liability Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$75,200,000
Redemption period for terminated employees	5 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years 0 months 15 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	0
Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Shares, New Issues			3,831,550
Common Class A [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Shares, New Issues	541,000

Income_Taxes_and_Related_Payme2

Income Taxes and Related Payments - Components of provision for income taxes (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	$5,040	$7,610
State and local	520	981
Foreign	98	77
Total	5,658	8,668
Federal	6,743	2,776
State and local	-7,319	-236
Total	-576	2,540
Income tax expense	$5,082	$11,208

Income_Taxes_and_Related_Payme3

Income Taxes and Related Payments - Components of deferred tax assets (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Deferred tax assets:
Amortizable basis	$670,879	[1]	$551,952	[1]
Other	16,891	[2]	10,444	[2]
Total deferred tax assets	687,770		562,396
Less: valuation allowance	0	[3]	0	[3]
Deferred tax assets	$687,770		$562,396
[1]	Represents the unamortized step-up of tax basis from the merger described above, the purchase of common and preferred units by APAM, and the exchange of common and preferred units for Class A common shares of APAM.
[2]	Represents the net deferred tax assets associated with the merger described above and other miscellaneous deferred tax assets.
[3]	Artisan assessed whether the deferred tax assets would be realizable and determined based on its history of taxable income that the benefits would more likely than not be realized. Accordingly, no valuation allowance is required.

Income_Taxes_and_Related_Payme4

Income Taxes and Related Payments - Additional information (Details) (USD $)	0 Months Ended	1 Months Ended		3 Months Ended
	Mar. 09, 2015	Mar. 31, 2015		Mar. 31, 2015		Mar. 31, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				35.00%
Approximate percentage of earnings not subject to income taxes				50.00%
TRA percent of savings to be paid to shareholders				85.00%
Tax Receivable Agreement Percentage To Be Retained by Entity				15.00%
Tax Receivable Agreement Payment Period				125
Other Tax Expense (Benefit)				$7,700,000
Net (Gain) Loss On The Tax Receivable Agreements				6,427,000		0
Deferred tax assets		670,879,000	[1]	670,879,000	[1]		551,952,000	[1]
Establishment of deferred tax assets	105,100,000	118,600,000		124,887,000		287,367,000
Establishment of amounts payable under tax receivable agreements	$89,400,000	$100,800,000		$100,840,000		$244,262,000
[1]	Represents the unamortized step-up of tax basis from the merger described above, the purchase of common and preferred units by APAM, and the exchange of common and preferred units for Class A common shares of APAM.

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized gain on investments	$477	$326
Foreign currency translation	-362	-120
Accumulated other comprehensive income (loss)	$115	$206

Earnings_Per_Share_Computation

Earnings Per Share - Computation of basic and diluted net income (loss) per share (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income attributable to APAM	$19,514	$8,636
Less: Convertible preferred stock deemed dividends	0	22,694
Less: Allocation to participating securities, Basic	5,557	6,980
Net Income (Loss) Available to Common Stockholders	13,957	-46,193
Weighted average shares outstanding	32,633,481	20,214,242
Earnings (loss) per share	$0.43	($2.29)
Subsidiary Preferred Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Less: Convertible preferred stock deemed dividends	$0	$25,155

Earnings_Per_Share_Antidilutiv

Earnings Per Share - Antidilutive securities excluded from the computation of net income per share (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	40,600,822	51,323,293
Holdings limited partnership units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	37,609,365	48,675,297
Convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	1,041,248
Unvested restricted share-based awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,991,457	1,606,748

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Artisan Funds
Related Party Transaction [Line Items]
Annualized operating expenses maximum percentage of average daily net assets	1.50%
Investment management fees	$134,307	$136,586
Fee waiver / expense reimbursement	0	60
Artisan Funds | Minimum
Related Party Transaction [Line Items]
Management fee percentage of average daily net assets	0.63%
Artisan Funds | Maximum
Related Party Transaction [Line Items]
Management fee percentage of average daily net assets	1.25%
Artisan Partners High Income Fund [Member]
Related Party Transaction [Line Items]
Annualized operating expenses maximum percentage of average daily net assets	1.25%
Artisan Global Funds
Related Party Transaction [Line Items]
Investment management fees	3,724	3,239
Fee waiver / expense reimbursement	63	82
Due from related parties	1,300
Artisan Global Funds | Minimum
Related Party Transaction [Line Items]
Management fee percentage of average daily net assets	0.75%
Management fee threshold for reimbursement, percentage average daily net assets	0.10%
Artisan Global Funds | Maximum
Related Party Transaction [Line Items]
Management fee percentage of average daily net assets	1.80%
Management fee threshold for reimbursement, percentage average daily net assets	0.20%
Related Party AIC [Member]
Related Party Transaction [Line Items]
Due from related parties	0
Launch Equity [Member]
Related Party Transaction [Line Items]
Fee waiver / expense reimbursement		$38
Management fee as a percentage of closing capital account	1.00%
Percentage of fee expected to be waived in current period	100.00%

Subsequent_Events_Details_Deta

Subsequent Events Details (Details) (Subsequent Event [Member], USD $)	0 Months Ended
In Millions, except Per Share data, unless otherwise specified	Apr. 22, 2015
Subsequent Event [Line Items]
Distribution Made to Limited Partner, Cash Distributions Declared	$32.80
Quarterly Cash Dividend [Member]
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared	$0.60