LPL Financial (LPLA) 10-Q 30 Apr 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	3 Months Ended
	Mar. 31, 2015	Apr. 27, 2015
Entity Information [Line Items]
Entity Registrant Name	LPL Financial Holdings Inc.
Entity Central Index Key	1397911
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
Entity Common Stock, Shares Outstanding		96,103,531

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
REVENUES:
Commission	$523,399	$534,574
Advisory	342,112	327,253
Asset-based	120,632	114,674
Transaction and fee	101,695	89,985
Interest income, net of interest expense	4,578	4,761
Other	16,886	16,184
Total net revenues	1,109,302	1,087,431
EXPENSES:
Commission and advisory	741,247	744,543
Compensation and benefits	112,280	106,348
Promotional	35,692	27,183
Depreciation and amortization	26,066	22,281
Occupancy and equipment	20,882	22,081
Professional services	14,044	14,313
Brokerage, clearing and exchange	12,741	12,175
Communications and data processing	11,614	10,659
Restructuring charges	3,924	7,320
Other	32,122	20,141
Total operating expenses	1,010,612	987,044
Non-operating interest expense	14,015	12,840
Total expenses	1,024,627	999,884
INCOME BEFORE PROVISION FOR INCOME TAXES	84,675	87,547
PROVISION FOR INCOME TAXES	33,997	34,412
NET INCOME	$50,678	$53,135
EARNINGS PER SHARE (NOTE 12)
Earnings per share, basic	$0.52	$0.52
Earnings per share, diluted	$0.52	$0.51
Weighted-average shares outstanding, basic	96,551	101,279
Weighted-average shares outstanding, diluted	98,227	103,339

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Net income	$50,678	$53,135
Other comprehensive income, net of tax:
Unrealized gain on cash flow hedges, net of tax expense of $287 and $675 for the three months ended March 31, 2015 and 2014, respectively	452	1,062
Reclassification adjustment for realized gain on cash flow hedges included in net income, net of tax expense of $85 and $0 for the three months ended March 31, 2015 and 2014, respectively	-135	0
Total other comprehensive income, net of tax	317	1,062
TOTAL COMPREHENSIVE INCOME	$50,995	$54,197

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parentheticals) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Tax expense (benefit) on unrealized gain (loss) on cash flow hedges	$287,000	$675,000
Tax expense on adjustment for items reclassified to earnings	$85,000	$0

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Financial Condition (Unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
ASSETS
Cash and cash equivalents	$484,694	$412,332
Cash and securities segregated under federal and other regulations	516,350	568,930
Restricted cash	16,960	1,109
Receivables from:
Clients, net of allowance of $1,258 at March 31, 2015 and $1,245 at December 31, 2014	324,458	365,390
Product sponsors, broker-dealers and clearing organizations	172,713	177,470
Others, net of allowance of $9,520 at March 31, 2015 and $8,379 at December 31, 2014	318,199	291,449
Securities owned:
Trading — at fair value	16,290	13,466
Held-to-maturity	9,350	8,594
Securities borrowed	7,893	5,035
Income taxes receivable	0	84
Fixed assets, net of accumulated depreciation and amortization of $288,538 at March 31, 2015 and $288,834 at December 31, 2014	209,194	214,154
Debt issuance costs, net of accumulated amortization of $12,457 at March 31, 2015 and $11,724 at December 31, 2014	12,508	13,241
Goodwill	1,365,838	1,365,838
Intangible assets, net of accumulated amortization of $314,137 at March 31, 2015 and $305,154 at December 31, 2014	420,633	430,704
Other assets	183,639	183,197
Total assets	4,058,719	4,050,993
LIABILITIES:
Drafts payable	170,212	180,099
Payables to clients	629,936	652,714
Payables to broker-dealers and clearing organizations	44,658	45,427
Accrued commission and advisory expenses payable	131,329	146,504
Accounts payable and accrued liabilities	291,248	289,426
Income taxes payable	25,308	0
Unearned revenue	80,262	64,482
Securities sold, but not yet purchased — at fair value	77	302
Senior secured credit facilities	1,641,548	1,634,258
Deferred income taxes, net	64,583	66,181
Total liabilities	3,079,161	3,079,393
STOCKHOLDERS' EQUITY:
Common stock, $.001 par value; 600,000,000 shares authorized; 118,490,826 shares issued at March 31, 2015 and 118,234,552 shares issued at December 31, 2014	118	118
Additional paid-in capital	1,367,426	1,355,085
Treasury stock, at cost — 21,792,887 shares at March 31, 2015 and 21,089,882 shares at December 31, 2014	-811,895	-780,661
Accumulated other comprehensive income	1,254	937
Retained earnings	422,655	396,121
Total stockholders' equity	979,558	971,600
Total liabilities and stockholders' equity	$4,058,719	$4,050,993

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements of Financial Condition (Unaudited) (Parentheticals) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Accumulated depreciation and amortization, Fixed assets	$288,538	$288,834
Accumulated amortization, Debt issuance costs	12,457	11,724
Accumulated amortization, Intangible assets	314,137	305,154
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	600,000,000	600,000,000
Common stock, shares issued	118,490,826	118,234,552
Treasury stock, shares	21,792,887	21,089,882
Receivables from clients [Member]
Allowances on receivables	1,258	1,245
Receivables from others [Member]
Allowances on receivables	$8,796	$8,379

Condensed_Consolidated_Stateme5

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (USD $)	Total		Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
In Thousands, except Share data
BEGINNING BALANCE at Dec. 31, 2013	$1,099,971		$117	$1,292,374	($506,205)	$115	$313,570
BEGINNING BALANCE, shares at Dec. 31, 2013			117,112,000		15,216,000
Net income and other comprehensive income (loss), net of tax expense	54,197					1,062	53,135
Issuance of common stock to settle restricted stock units, net	-584		1
Issuance of common stock to settle restricted stock units, net, shares			34,000
Treasury stock purchases	-100,000	[1]			-100,000
Treasury stock purchases, shares	1,923,076				1,923,000
Cash dividends on common stock	-24,097						-24,097
Stock option exercises and other	14,060			13,747	316		-3
Stock option exercises and other, shares			545,000		-9,000
Share-based compensation	8,287			8,287
Excess tax benefits from share-based compensation	4,415			4,415
ENDING BALANCE at Mar. 31, 2014	1,056,249		118	1,318,823	-606,474	1,177	342,605
ENDING BALANCE, shares at Mar. 31, 2014			117,691,000		17,141,000
BEGINNING BALANCE at Dec. 31, 2014	971,600		118	1,355,085	-780,661	937	396,121
BEGINNING BALANCE, shares at Dec. 31, 2014			118,235,000		21,090,000
Net income and other comprehensive income (loss), net of tax expense	50,995					317	50,678
Issuance of common stock to settle restricted stock units, net	-1,752				-1,752
Issuance of common stock to settle restricted stock units, net, shares			110,000		38,000
Treasury stock purchases	-30,014	[1]			-30,014
Treasury stock purchases, shares	679,772				680,000
Cash dividends on common stock	-24,156						-24,156
Stock option exercises and other	4,720			4,176	532		12
Stock option exercises and other, shares			146,000		-15,000
Share-based compensation	7,193			7,193
Excess tax benefits from share-based compensation	972			972
ENDING BALANCE at Mar. 31, 2015	$979,558		$118	$1,367,426	($811,895)	$1,254	$422,655
ENDING BALANCE, shares at Mar. 31, 2015			118,491,000		21,793,000
[1]	Included in the total cost of shares purchased is a commission fee of $0.02 per share.

Condensed_Consolidated_Stateme6

Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$50,678	$53,135
Noncash items:
Depreciation and amortization	26,066	22,281
Amortization of debt issuance costs	733	1,080
Share-based compensation	7,193	8,287
Excess tax benefits related to share-based compensation	-1,156	-4,444
Provision for bad debts	469	330
Deferred income tax provision	-1,800	0
Loan forgiveness	8,529	6,436
Other	4,761	175
Changes in operating assets and liabilities:
Cash and securities segregated under federal and other regulations	52,580	51,039
Receivables from clients	40,919	33,289
Receivables from product sponsors, broker-dealers and clearing organizations	4,757	27,950
Receivables from others	-35,723	-19,356
Securities owned	-2,875	-3,593
Securities borrowed	-2,858	-1,162
Other assets	-3,599	-27,431
Drafts payable	-9,887	-14,323
Payables to clients	-22,778	-555
Payables to broker-dealers and clearing organizations	-769	-12,533
Accrued commission and advisory expenses payable	-15,175	-9,909
Accounts payable and accrued liabilities	3,475	-55,701
Income taxes receivable/payable	26,548	24,889
Unearned revenue	15,780	5,578
Securities sold, but not yet purchased	-225	325
Net cash provided by operating activities	145,643	85,787
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	-13,918	-23,012
Proceeds from disposal of fixed assets	0	1,000
Purchase of securities classified as held-to-maturity	-1,506	0
Proceeds from maturity of securities classified as held-to-maturity	750	2,000
Deposits of restricted cash	-15,908	0
Release of restricted cash	57	132
Net cash used in investing activities	-30,525	-19,880
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from revolving credit facility	10,000	0
Repayment of senior secured credit facilities	-2,710	-2,709
Payment of contingent consideration	0	-3,300
Tax payments related to settlement of restricted stock units	-1,752	-584
Repurchase of common stock	-30,014	-100,000
Dividends on common stock	-24,156	-24,097
Excess tax benefits related to share-based compensation	1,156	4,444
Proceeds from stock option exercises and other	4,720	14,060
Net cash used in financing activities	-42,756	-112,186
NET INCREASE (DECREASE) CASH AND CASH EQUIVALENTS	72,362	-46,279
CASH AND CASH EQUIVALENTS - Beginning of period	412,332	516,584
CASH AND CASH EQUIVALENTS - End of period	484,694	470,305
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest paid	8,175	13,047
Income taxes paid	9,449	9,531
NONCASH DISCLOSURES:
Capital expenditures included in accounts payable and accrued liabilities	6,535	9,526
Fixed assets acquired under build-to-suit lease	$0	$8,114

Organization_and_Description_o

Organization and Description of the Company	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of the Company	Organization and Description of the Company
	LPL Financial Holdings Inc. (“LPLFH”), a Delaware holding corporation, together with its consolidated subsidiaries (collectively, the “Company”) provides an integrated platform of brokerage and investment advisory services to independent financial advisors and financial advisors at financial institutions (collectively “advisors”) in the United States of America. Through its custody and clearing platform, using both proprietary and third-party technology, the Company provides access to diversified financial products and services enabling its advisors to offer independent financial advice and brokerage services to retail investors (their “clients”).

Summary_of_Significant_Account

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies
	Basis of Presentation
	The unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). These unaudited condensed consolidated financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the interim periods presented. These adjustments are of a normal recurring nature. The Company’s results for any interim period are not necessarily indicative of results for a full year or any other interim period.
	The unaudited condensed consolidated financial statements do not include all information and notes necessary for a complete presentation of results of income, comprehensive income, financial position, and cash flows in conformity with generally accepted accounting principles in the United States of America (“GAAP”). Accordingly, these financial statements should be read in conjunction with the Company’s audited consolidated financial statements and the related notes for the year ended December 31, 2014, contained in the Company’s Annual Report on Form 10-K as filed with the SEC.
	The Company’s significant accounting policies are included in Note 2. Summary of Significant Accounting Policies, in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014. There have been no significant changes to these accounting policies during the first three months of 2015.
	Consolidation
	These unaudited condensed consolidated financial statements include the accounts of LPLFH and its subsidiaries. Intercompany transactions and balances have been eliminated. Equity investments in which the Company exercises significant influence but does not exercise control and is not the primary beneficiary are accounted for using the equity method.
	Use of Estimates
	The preparation of the unaudited condensed consolidated financial statements in conformity with GAAP requires the Company to make estimates and judgments that affect the reported amounts of assets and liabilities, revenue and expenses, and related disclosures of contingent assets and liabilities. These estimates are based on the information that is currently available and on various other assumptions that the Company believes to be reasonable under the circumstances. Actual results could vary from these estimates.
	Reportable Segment
	The Company's internal reporting is organized into two service channels: Independent Advisor Services and Institution Services. These service channels are aggregated and viewed as one operating segment, and therefore, one reportable segment due to their similar economic characteristics, products and services, production and distribution processes, and regulatory environment.
	Restricted Cash
	Restricted cash primarily represents cash restricted for use by the Company’s captive insurance company.
	Fair Value of Financial Instruments
	The Company’s financial assets and liabilities are carried at fair value or at amounts that, because of their short-term nature, approximate current fair value, with the exception of its held-to-maturity securities and indebtedness. The Company carries its held-to-maturity securities and indebtedness at amortized cost. The Company measures the implied fair value of its debt instruments using trading levels obtained from a third-party service provider. Accordingly, the debt instruments qualify as Level 2 fair value measurements. See Note 4. Fair Value Measurements, for additional detail regarding the Company’s fair value measurements. As of March 31, 2015, the carrying amount and fair value of the Company’s indebtedness was approximately $1,641.5 million and $1,644.8 million, respectively. As of December 31, 2014, the carrying amount and fair value was approximately $1,634.3 million and $1,620.8 million, respectively.
	Recently Issued Accounting Pronouncements
	In April 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2015-03, Interest—Imputation of Interest, which simplifies the presentation of debt issuance costs on the balance sheet by presenting debt issuance costs as a direct deduction from the carrying amount of the related debt liability. ASU 2015-03 will become effective for the Company beginning January 1, 2016 and early adoption is permitted. The Company does not anticipate the adoption of ASU 2015-03 to have a material impact on its consolidated financial statements.

Restructuring

Restructuring	3 Months Ended
	Mar. 31, 2015
Restructuring and Related Activities [Abstract]
Restructuring	Restructuring
	In February 2013, the Company committed to an expansion of its Service Value Commitment initiative (the “Program”), an ongoing effort to position the Company's people, processes, and technology for sustainable long-term growth while improving the service experience of its advisors and delivering efficiencies in its operating model. The Program is expected to be completed in 2015.
	The Company estimates total charges in connection with the Program will approach $68.0 million. These expenditures are comprised of outsourcing and other related costs, technology transformation costs, employee severance obligations and other related costs, as well as non-cash charges for impairment of certain fixed assets related to internally developed software.
	The following table summarizes the balance of accrued expenses and the changes in the accrued amounts for the Program as of and for the three months ended March 31, 2015 (in thousands):
		Accrued Balance at December 31, 2014		Costs			Payments			Accrued Balance at March 31, 2015		Cumulative Costs Incurred to Date		Total
				Incurred										Expected
														Restructuring
														Costs
	Outsourcing and other related costs	$	—	$	755		$	(755	)	$	—	$	22,243	$	23,500
	Technology transformation costs	4,458		117			(4,305		)	270		30,035		30,300
	Employee severance obligations and other related costs	1,999		1,100			(147		)	2,952		9,985		13,400
	Asset impairments	—		—			—			—		842		842
	Total	$	6,457	$	1,972		$	(5,207	)	$	3,222	$	63,105	$	68,042
	On February 24, 2015, the Company committed to a course of action to restructure the business of its subsidiary, Fortigent Holdings Company, Inc. (together with its subsidiaries, “Fortigent”). The Company acquired Fortigent, which provides outsourced wealth management solutions, in April 2012. The intention of the restructuring plan is to migrate Fortigent’s operations from Rockville, Maryland to the Company’s office in Charlotte, North Carolina, simplify and improve the efficiency of Fortigent’s existing service offerings, and position Fortigent to capitalize on the Company's future technology investments and service offerings for financial institutions and advisors focused on high-net-worth clients.
	In connection with this restructuring, the Company estimates total charges in connection with this restructuring will approach $9.0 million. These expenditures are comprised of employee severance obligations and other related costs, relocation and related costs, lease restructuring charges, as well as non-cash charges for impairment of certain intangible assets.
	The following table summarizes the balance of accrued expenses and the changes in the accrued amounts for the Program as of and for the three months ended March 31, 2015 (in thousands):
		Costs		Payments			Non-cash			Accrued Balance at March 31, 2015		Cumulative Costs Incurred to Date		Total
		Incurred												Expected
														Restructuring
														Costs
	Employee severance obligations and other related costs	$	965	$	(69	)	$	—		$	896	$	965	$	4,500
	Relocation and related costs	278		—			—			278		278		2,000
	Lease restructuring charges	—		—			—			—		—		1,300
	Asset impairments	433		—			(433		)	—		433		1,200
	Total	$	1,676	$	(69	)	$	(433	)	$	1,174	$	1,676	$	9,000

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements
	Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. Inputs used to measure fair value are prioritized within a three-level fair value hierarchy. This hierarchy requires entities to maximize the use of observable inputs and minimize the use of unobservable inputs. The three levels of inputs used to measure fair value are as follows:
	Level 1 — Quoted prices in active markets for identical assets or liabilities.
	Level 2 — Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.
	Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies, and similar techniques that use significant unobservable inputs.
	There have been no transfers of assets or liabilities between these fair value measurement classifications during the three months ended March 31, 2015.
	The Company’s fair value measurements are evaluated within the fair value hierarchy, based on the nature of inputs used to determine the fair value at the measurement date. At March 31, 2015, the Company had the following financial assets and liabilities that are measured at fair value on a recurring basis:
	Cash Equivalents — The Company’s cash equivalents include money market funds, which are short term in nature with readily determinable values derived from active markets.
	Securities Owned and Securities Sold, But Not Yet Purchased — The Company's trading securities consist of house account model portfolios established and managed for the purpose of benchmarking the performance of its fee-based advisory platforms and temporary positions resulting from the processing of client transactions. Examples of these securities include money market funds, U.S. treasury obligations, mutual funds, certificates of deposit, and traded equity and debt securities.
	The Company uses prices obtained from independent third-party pricing services to measure the fair value of its trading securities. Prices received from the pricing services are validated using various methods including comparison to prices received from additional pricing services, comparison to available quoted market prices, and review of other relevant market data including implied yields of major categories of securities. In general, these quoted prices are derived from active markets for identical assets or liabilities. When quoted prices in active markets for identical assets and liabilities are not available, the quoted prices are based on similar assets and liabilities or inputs other than the quoted prices that are observable, either directly or indirectly. For certificates of deposit and treasury securities, the Company utilizes market-based inputs, including observable market interest rates that correspond to the remaining maturities or the next interest reset dates. At March 31, 2015, the Company did not adjust prices received from the independent third-party pricing services.
	Other Assets — The Company’s other assets include: (1) deferred compensation plan assets that are invested in money market and other mutual funds, which are actively traded and valued based on quoted market prices; (2) certain non-traded real estate investment trusts and auction rate notes, which are valued using quoted prices for identical or similar securities and other inputs that are observable or can be corroborated by observable market data; and (3) cash flow hedges, which are measured using quoted prices for similar cash flow hedges, taking into account counterparty credit risk and the Company's own non-performance risk.
	Accounts Payable and Accrued Liabilities — The Company's accounts payable and accrued liabilities include contingent consideration liabilities that are measured using Level 3 inputs.
	The following table summarizes the Company’s financial assets and financial liabilities measured at fair value on a recurring basis at March 31, 2015 (in thousands):
		Level 1		Level 2		Level 3		Total
	At March 31, 2015:
	Assets
	Cash equivalents	$	13,463	$	—	$	—	$	13,463
	Securities owned — trading:
	Money market funds	262		—		—		262
	Mutual funds	7,231		—		—		7,231
	Equity securities	167		—		—		167
	Debt securities	—		13		—		13
	U.S. treasury obligations	8,617		—		—		8,617
	Total securities owned — trading	16,277		13		—		16,290
	Other assets	91,593		5,711		—		97,304
	Total assets at fair value	$	121,333	$	5,724	$	—	$	127,057
	Liabilities
	Securities sold, but not yet purchased:
	Equity securities	$	55	$	—	$	—	$	55
	Debt securities	—		22		—		22
	Total securities sold, but not yet purchased	55		22		—		77
	Accounts payable and accrued liabilities	—		—		527		527
	Total liabilities at fair value	$	55	$	22	$	527	$	604
	The following table summarizes the Company’s financial assets and financial liabilities measured at fair value on a recurring basis at December 31, 2014 (in thousands):
		Level 1		Level 2		Level 3		Total
	At December 31, 2014:
	Assets
	Cash equivalents	$	22,592	$	—	$	—	$	22,592
	Securities owned — trading:
	Money market funds	293		—		—		293
	Mutual funds	7,570		—		—		7,570
	Equity securities	224		—		—		224
	Debt securities	—		1,379		—		1,379
	U.S. treasury obligations	4,000		—		—		4,000
	Total securities owned — trading	12,087		1,379		—		13,466
	Other assets	75,540		5,058		—		80,598
	Total assets at fair value	$	110,219	$	6,437	$	—	$	116,656
	Liabilities
	Securities sold, but not yet purchased:
	Mutual funds	$	13	$	—	$	—	$	13
	Equity securities	279		—		—		279
	Debt securities	—		10		—		10
	Total securities sold, but not yet purchased	292		10		—		302
	Accounts payable and accrued liabilities	—		—		527		527
	Total liabilities at fair value	$	292	$	10	$	527	$	829
	Level 3 Recurring Fair Value Measurements
	The Company determines the fair value for its contingent consideration obligations using an income approach whereby the Company assesses the probability and timing of the achievement of the applicable milestones, which are based on contractually negotiated financial or operating targets that vary by acquisition transaction, such as revenues. The contingent payments are estimated using a probability weighted, multi-scenario analysis of expected future performance of the acquired businesses. The Company then discounts these expected payment amounts to calculate the fair value as of the valuation date. The Company's management evaluates the underlying projections and other related factors used in determining fair value each period and makes updates when there have been significant changes in management's expectations.

HeldtoMaturity_Securities

Held-to-Maturity Securities	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Held-to-Maturity Securities	Held-to-Maturity Securities
	The Company holds certain investments in securities, primarily U.S. government notes, which are recorded at amortized cost because the Company has both the intent and the ability to hold these investments to maturity. Interest income is accrued as earned. Premiums and discounts are amortized using a method that approximates the effective yield method over the term of the security and are recorded as an adjustment to the investment yield.
	The amortized cost, gross unrealized gain or loss, and fair value of securities held-to-maturity were as follows (in thousands):
		March 31,		December 31,
		2015		2014
	Amortized cost	$	9,350	$	8,594
	Gross unrealized gain (loss)	13		(14		)
	Fair value	$	9,363	$	8,580
	At March 31, 2015, the securities held-to-maturity were scheduled to mature as follows (in thousands):
		Within one year		After one but within five years			After five but within ten years		Total
	U.S. government notes — at amortized cost	$	4,100	$	4,750		$	500	$	9,350
	U.S. government notes — at fair value	$	4,102	$	4,753		$	508	$	9,363

Derivative_Financial_Instrumen

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments
	In May 2013, in conjunction with its Service Value Commitment initiative, the Company entered into a long-term contractual obligation (the “Agreement”) with a third-party provider to enhance the quality, speed, and cost of processes by outsourcing certain functions. The Agreement enables the third-party provider to use the services of its affiliates in India to provide services to the Company and provides for the Company to settle the cost of its contractual obligation to the third-party provider in U.S. dollars each month. However, the Agreement provides that on each annual anniversary date of the signing of the Agreement, the price for services (denominated in U.S. dollars) is to be adjusted for the then-current exchange rate between the U.S. dollar (“USD”) and the Indian rupee (“INR”). The Agreement provides that, once an annual adjustment is calculated, there are no further modifications to the amounts paid by the Company to the third-party provider for fluctuations in the exchange rate between the USD and the INR until the reset on the next anniversary date of the signing of the Agreement.
	The third-party provider bore the risk of currency movement from the date of signing the Agreement until the reset on the first anniversary of its signing, and bears such risk during each period until the next annual reset date. The Company bears the risk of currency movement at each of the annual reset dates following the first anniversary.
	To mitigate foreign currency risk arising from these annual anniversary events, the Company entered into four non-deliverable foreign currency contracts, all of which have been designated as cash flow hedges. The first cash flow hedge, with a notional amount of 560.4 million INR, or $8.5 million, settled in June 2014. The Company received a settlement of $1.0 million that will be reclassified out of accumulated other comprehensive income and recognized in net income ratably over a 12-month period ending May 31, 2015 to match the timing of the underlying hedged item.
	The details related to the remaining non-deliverable foreign currency contracts at March 31, 2015 are as follows (in millions, except foreign exchange rate):
		Settlement Date		Hedged Notional Amount (INR)		Contractual INR/USD Foreign Exchange Rate	Hedged Notional Amount (USD)
	Cash flow hedge #2	6/2/15		560.4		69.35	$	8.1
	Cash flow hedge #3	6/2/16		560.4		72.21	7.8
	Cash flow hedge #4	6/2/17		560.4		74.2	7.5
	Total hedged amount						$	23.4
	The fair value of the derivative instruments, included in other assets in the unaudited condensed consolidated statements of financial condition, were as follows (in thousands):
		March 31,			December 31,
		2015			2014
	Cash flow hedges	$	1,916		$	1,179

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets
	Goodwill and intangible assets were a result of various acquisitions. See Note 8. Goodwill and Other Intangible Assets, in the Company's 2014 Annual Report on Form 10-K for a discussion of the components of goodwill and additional information regarding intangible assets.

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt	Debt
	Senior Secured Credit Facilities — In October 2014, the Company entered into the Second Amendment, Extension and Incremental Assumption Agreement (“Credit Agreement”) with its wholly owned subsidiary, LPL Holdings, Inc., the other parties thereto. The Credit Agreement includes a term loan A (“Term Loan A”), a term loan B (“Term Loan B”), and a revolving credit facility (“Revolving Credit Facility”), which has a borrowing capacity of $400.0 million.
	The Company’s outstanding borrowings were as follows (dollars in thousands):
			March 31, 2015				December 31, 2014
	Senior Secured Credit Facilities	Maturity			Interest				Interest
			Balance		Rate		Balance		Rate
	Revolving Credit Facility	9/30/19	$	120,000	4.15	%	$	110,000	4.75	%
	Senior secured term loans:
	Term Loan A	9/30/19	459,375		2.68	%	459,375		2.67	%
	Term Loan B	3/29/19	1,062,173		3.25	%	1,064,883		3.25	%
	Total borrowings		1,641,548				1,634,258
	Less current portion		130,839				120,839
	Long-term borrowings — net of current portion		$	1,510,709			$	1,513,419
	As of March 31, 2015, the Company also had $21.5 million of irrevocable letters of credit, with an applicable interest rate margin of 2.50%, which were supported by the Revolving Credit Facility.
	The Credit Agreement subjects the Company to certain financial and non-financial covenants. As of March 31, 2015, the Company was in compliance with such covenants.
	Bank Loans Payable — The Company maintains three uncommitted lines of credit. Two of the lines have unspecified limits, which are primarily dependent on the Company’s ability to provide sufficient collateral. The third line has a $200.0 million limit, and allows for both collateralized and uncollateralized borrowings. The lines have not been utilized in 2015 and were not utilized in 2014; therefore, there were no balances outstanding at March 31, 2015 or December 31, 2014.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	Leases
	The Company leases office space and equipment under various operating leases. These leases are generally subject to scheduled base rent and maintenance cost increases, which are recognized on a straight-line basis over the period of the leases. Total rental expense for all operating leases was approximately $6.6 million and $8.8 million for the three months ended March 31, 2015 and 2014, respectively.
	Service and Development Contracts
	The Company is party to certain long-term contracts for systems and services that enable back office trade processing and clearing for its product and service offerings.
	Guarantees
	The Company occasionally enters into certain types of contracts that contingently require it to indemnify certain parties against third-party claims. The terms of these obligations vary and, because a maximum obligation is not explicitly stated, the Company has determined that it is not possible to make an estimate of the amount that it could be obligated to pay under such contracts.
	The Company’s subsidiary, LPL Financial, provides guarantees to securities clearing houses and exchanges under their standard membership agreements, which require a member to guarantee the performance of other members. Under these agreements, if a member becomes unable to satisfy its obligations to the clearing houses and exchanges, all other members would be required to meet any shortfall. The Company’s liability under these arrangements is not quantifiable and may exceed the cash and securities it has posted as collateral. However, the potential requirement for the Company to make payments under these agreements is remote. Accordingly, no liability has been recognized for these transactions.
	Loan Commitments
	From time to time, LPL Financial makes loans to its advisors, primarily to newly recruited advisors to assist in the transition process, which may be forgivable. Due to timing differences, LPL Financial may make commitments to issue such loans prior to actually funding them. These unfunded commitments are generally contingent upon certain events occurring, including but not limited to the advisor joining LPL Financial. LPL Financial had no such significant unfunded commitments at March 31, 2015.
	Legal & Regulatory Matters
	Assessing the probability of a loss occurring and the amount of any loss related to a legal proceeding or regulatory matter is inherently difficult. The Company exercises significant and complex judgments to make certain estimates presented in its consolidated financial statements, and there are particular uncertainties and complexities involved when assessing the potential outcomes of legal proceedings and regulatory matters. The Company's assessment process considers a variety of factors and assumptions, which may include the procedural status of the matter and any recent developments; prior experience and the experience of others in similar matters; the size and nature of potential exposures; available defenses; the progress of fact discovery; the opinions of counsel and experts; potential opportunities for settlement and the status of any settlement discussions; as well as the potential for insurance coverage and indemnification, if available. The Company monitors these factors and assumptions for new developments and re-assesses the likelihood that a loss will occur and the estimated range or amount of loss, if those amounts can be reasonably determined. The Company has established an accrual for those legal proceedings and regulatory matters for which a loss is both probable and the amount can be reasonably estimated. The Company’s accruals at March 31, 2015, include estimated costs for regulatory matters generally relating to the adequacy of the Company’s compliance and supervisory systems and procedures and other controls, for which the Company believes losses are both probable and reasonably estimable. When it is not probable but at least reasonably possible that a loss has been incurred, a disclosure of fact is made when the underlying loss or range of losses can also be reasonably estimated. The Company estimates that, as of March 31, 2015, exposure to those losses could range from $0 to $8 million in excess of the accrued liability, if any, related to those matters. Due to the inherent unpredictability of such matters, the Company may have exposure to losses that are not yet predictable or cannot yet be reasonably estimated in addition to those amounts that have been accrued or disclosed.
	Third-Party Insurance
	The Company maintains third-party insurance coverage for certain legal proceedings, including those involving client claims. With respect to client claims, the estimated losses on many of the pending matters are less than the applicable deductibles of the insurance policies. The Company is also subject to extensive regulation and supervision by U.S. federal and state agencies and various self-regulatory organizations. The Company and its advisors periodically engage with such agencies and organizations, in the context of examinations or otherwise, to respond to inquiries, informational requests, and investigations. From time to time, such engagements result in regulatory complaints or other matters, the resolution of which can include fines and other remediation.
	Self-Insurance Liabilities
	The Company has self-insurance for potential liabilities, including errors and omissions liabilities, through a wholly-owned captive insurance subsidiary. Liabilities associated with the risks that are retained by the Company are not discounted and are estimated by considering, in part, historical claims experience, severity factors, and other actuarial assumptions. The estimated accruals for these potential liabilities could be significantly affected if future occurrences and claims differ from such assumptions and historical trends. As of March 31, 2015, these self-insurance liabilities are included in accounts payable and accrued liabilities in the condensed consolidated balance sheet. Self-insurance related charges are included in other expenses in the condensed consolidated statement of income for the three months ended March 31, 2015.
	Other Commitments
	As of March 31, 2015, the Company had received collateral primarily in connection with client margin loans with a market value of approximately $349.8 million, which it can re-pledge, loan, or sell. Of these securities, approximately $31.4 million were client-owned securities pledged to the Options Clearing Corporation as collateral to secure client obligations related to options positions. As of March 31, 2015 there were no restrictions that materially limited the Company's ability to re-pledge, loan, or sell the remaining $318.4 million of client collateral.
	Trading securities on the unaudited condensed consolidated statements of financial condition includes $4.3 million and $4.0 million pledged to clearing organizations at March 31, 2015 and December 31, 2014, respectively.

Stockholders_Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2015
Stockholders' Equity Note [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	Stockholders' Equity
	Dividends
	The payment, timing, and amount of any dividends are subject to approval by the Board of Directors as well as certain limits under the Company's credit facilities.
	On February 18, 2015, the Board of Directors declared a cash dividend of $0.25 per share on the Company's outstanding common stock. The dividend of $24.2 million in the aggregate was paid on March 16, 2015 to all stockholders of record as of March 2, 2015.
	On February 10, 2014, the Board of Directors declared a cash dividend of $0.24 per share on the Company's outstanding common stock. The dividend of $24.1 million in the aggregate was paid on March 10, 2014 to all stockholders of record as of February 24, 2014.
	Share Repurchases
	The Board of Directors has approved several share repurchase programs pursuant to which the Company may repurchase its issued and outstanding shares of common stock from time to time. Repurchased shares are included in treasury stock on the unaudited condensed consolidated statements of financial condition. Purchases may be effected in open market or privately negotiated transactions, including transactions with affiliates, with the timing of purchases and the amount of stock purchased generally determined at the discretion of the Company's management within the constraints of the Credit Agreement and general liquidity needs.
	For the three months ended March 31, 2015 and 2014, the Company had the following activity under its approved share repurchase programs (in millions, except share and per share data):
							Three Months Ended March 31,
							2015					2014
	Approval Date		Authorized Repurchase Amount		Amount Remaining at March 31, 2015		Shares Purchased	Weighted-Average Price Paid Per Share		Total Cost(1)		Shares Purchased	Weighted-Average Price Paid Per Share		Total Cost(1)
	28-May-13		$	200	$	—	—	$	—	$	—	1,306,288	$	52	$	67.9
	10-Feb-14		$	150	—		—	—		—		616,788	52		32.1
	1-Oct-14		$	150	62.9		679,772	44.15		30		—	—		—
					$	62.9	679,772	$	44.15	$	30	1,923,076	$	52	$	100
	_________________________
	-1	Included in the total cost of shares purchased is a commission fee of $0.02 per share.
	See Note 14. Related Party Transactions, for details regarding the repurchase of shares from related parties.

ShareBased_Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stockholders' Equity	Share-Based Compensation
	Certain employees, advisors, institutions, officers, and directors of the Company participate in various long-term incentive plans, which provide for granting stock options, warrants, restricted stock awards, and restricted stock units. Stock options and warrants generally vest in equal increments over a three- to five-year period and expire on the tenth anniversary following the date of grant. Restricted stock awards and restricted stock units generally vest over a two- to four-year period.
	In November 2010, the Company adopted a 2010 Omnibus Equity Incentive Plan (the “2010 Plan”), which provides for the granting of stock options, warrants, restricted stock awards, restricted stock units, and other equity-based compensation. The 2010 Plan serves as the successor to the 2005 Stock Option Plan for Incentive Stock Options, the 2005 Stock Option Plan for Non-qualified Stock Options, the 2008 Advisor and Institution Incentive Plan, the 2008 Stock Option Plan and the Director Restricted Stock Plan (collectively, the “Predecessor Plans”). Upon adoption of the 2010 Plan, awards were no longer made under the Predecessor Plans; however, awards previously granted under the Predecessor Plans remain outstanding until exercised or forfeited.
	There are 12,055,945 shares authorized for grant under the 2010 Plan. As of March 31, 2015, there were 5,241,049 shares reserved for issuance upon exercise or conversion of outstanding awards granted under the 2010 Plan.
	Stock Options and Warrants
	The following table presents the weighted-average assumptions used in the Black-Scholes valuation model by the Company in calculating the fair value of its employee, officer, and director stock options that have been granted during the three months ended March 31, 2015:
	Expected life (in years)	5.3
	Expected stock price volatility	25.78		%
	Expected dividend yield	2.3		%
	Risk-free interest rate	1.58		%
	Fair value of options	$	8.82
	The fair value of each stock option or warrant awarded to advisors and financial institutions is estimated on the date of the grant and revalued at each reporting period using the Black-Scholes valuation model with the following weighted-average assumptions used during the three months ended March 31, 2015:
	Expected life (in years)	6.74
	Expected stock price volatility	25.69		%
	Expected dividend yield	2.27		%
	Risk-free interest rate	1.69		%
	Fair value of options	$	14.53
	The following table summarizes the Company’s stock option and warrant activity for the three months ended March 31, 2015:
		Number of			Weighted-		Weighted-		Aggregate
		Shares			Average		Average		Intrinsic
					Exercise Price		Remaining		Value
							Contractual		(In thousands)
							Term
							(Years)
	Outstanding — December 31, 2014	6,287,410			$	31.59
	Granted	1,100,197			45.55
	Exercised	(146,559	)		28.49
	Forfeited	(179,731	)		37.65
	Outstanding — March 31, 2015	7,061,317			$	33.68	6.7		$	71,898
	Exercisable — March 31, 2015	4,101,683			$	29.24	5.45		$	59,952
	The following table summarizes information about outstanding stock options and warrants at March 31, 2015:
		Outstanding							Exercisable
	Range of Exercise Prices	Total			Weighted-		Weighted-		Number of			Weighted-
		Number of			Average		Average		Shares			Average
		Shares			Exercise		Remaining					Exercise
					Price		Life					Price
							(Years)
	$2.38	17,382			$	2.38	0.17		17,382			$	2.38
	$15.84 - $23.02	1,255,407			21.41		4.2		1,255,407			21.41
	$23.41 - $30.00	1,517,035			28.11		5.51		1,015,575			27.8
	$31.60 - $32.33	1,431,890			31.89		7.4		773,151			31.93
	$34.01 - $39.60	1,111,875			34.59		5.91		831,396			34.48
	$45.55 - $54.81	1,727,728			48.7		9.58		208,772			54.81
		7,061,317			$	33.68	6.7		4,101,683			$	29.24
	The Company recognizes share-based compensation for stock options awarded to employees, officers, and directors based on the grant date fair value over the requisite service period of the award, which generally equals the vesting period. The Company recognized share-based compensation related to the vesting of these awards of $4.1 million and $3.8 million during the three months ended March 31, 2015 and 2014, respectively, which is included in compensation and benefits expense on the unaudited condensed consolidated statements of income. As of March 31, 2015, total unrecognized compensation cost related to non-vested stock options granted to employees, officers, and directors was $24.1 million, which is expected to be recognized over a weighted-average period of 2.20 years.
	The Company recognizes share-based compensation for stock options and warrants awarded to its advisors and to financial institutions based on the fair value of the awards at each reporting period. The Company recognized share-based compensation of $0.6 million and $3.2 million during the three months ended March 31, 2015 and 2014, respectively, related to the vesting of stock options and warrants awarded to its advisors and financial institutions, which is classified within commission and advisory expense on the unaudited condensed consolidated statements of income. As of March 31, 2015, total unrecognized compensation cost related to non-vested stock options and warrants granted to advisors and financial institutions was $6.4 million, which is expected to be recognized over a weighted-average period of 2.13 years.
	Restricted Stock
	The following summarizes the Company’s activity in its restricted stock awards and restricted stock units for the three months ended March 31, 2015:
		Restricted Stock Awards					Restricted Stock Units
		Number of			Weighted-Average		Number of			Weighted-Average
		Shares			Grant-Date		Shares			Grant-Date
					Fair Value					Fair Value
	Nonvested at December 31, 2014	33,634			$	42.78	546,725			$	43.34
	Granted	—			—		180,121			43.5
	Vested	(7,910	)		31.6		(109,715	)		38.99
	Forfeited	—			—		(24,768	)		49.53
	Nonvested at March 31, 2015	25,724			$	46.22	592,363			$	43.94
	The Company recognizes share-based compensation for restricted stock awards and restricted stock units granted to its employees, officers, and directors based on the grant date fair value over the requisite service period of the award, which generally equals the vesting period. The Company recognized $2.0 million and $1.2 million of share-based compensation related to the vesting of these restricted stock awards and restricted stock units during the three months ended March 31, 2015 and 2014, respectively, which is included in compensation and benefits expense on the unaudited condensed consolidated statements of income. As of March 31, 2015, total unrecognized compensation cost for restricted stock awards and restricted stock units granted to employees, officers, and directors was $15.5 million, which is expected to be recognized over a weighted-average remaining period of 2.35 years.
	In the second quarter of 2014, the Company began granting restricted stock units to its advisors and to financial institutions. The Company recognizes share-based compensation for restricted stock units granted to its advisors and to financial institutions based on the fair value of the awards at each reporting period. The Company recognized share-based compensation of $0.4 million related to the vesting of these restricted stock units during the three months ended March 31, 2015, which is classified within commission and advisory expense on the unaudited condensed consolidated statements of income. As of March 31, 2015, total unrecognized compensation cost for restricted stock units granted to advisors and financial institutions was $3.4 million, which is expected to be recognized over a weighted-average remaining period of 2.12 years.

Earnings_per_Share

Earnings per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings per Share	Earnings Per Share
	Basic earnings per share is computed by dividing net income available to common stockholders by the weighted-average number of shares of common stock outstanding during the period. The computation of diluted earnings per share is similar to the computation of basic earnings per share, except that the denominator is increased to include the number of additional shares of common stock that would have been outstanding if dilutive potential shares of common stock had been issued. The calculation of basic and diluted earnings per share for the three months ended March 31, 2015 and 2014 is as follows (in thousands, except per share data):
		Three Months Ended March 31,
		2015		2014
	Net income	$	50,678	$	53,135
	Basic weighted-average number of shares outstanding	96,551		101,279
	Dilutive common share equivalents	1,676		2,060
	Diluted weighted-average number of shares outstanding	98,227		103,339
	Basic earnings per share	$	0.52	$	0.52
	Diluted earnings per share	$	0.52	$	0.51
	The computation of diluted earnings per share excludes stock options, warrants, and restricted stock units that are anti-dilutive. For the three months ended March 31, 2015 and 2014, stock options, warrants, and restricted stock units representing common share equivalents of 1,595,614 shares and 941,406 shares, respectively, were anti-dilutive.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	The Company’s effective income tax rate differs from the federal corporate tax rate of 35.0%, primarily as a result of state taxes, settlement contingencies, and expenses that are not deductible for tax purposes. These items resulted in effective tax rates of 40.1% and 39.3% for the three months ended March 31, 2015 and 2014, respectively. Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes.

Related_Party_Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions
	The Company has related party transactions with TPG Capital, one of the Company's significant stockholders, as well as certain portfolio companies of TPG Capital. During the three months ended March 31, 2015 and 2014 the Company recognized revenue for services provided to these portfolio companies of $0.3 million and $0.1 million, respectively. During the three months ended March 31, 2015 and 2014, the Company incurred expenses for services provided by TPG Capital or these portfolio companies of $1.2 million and $0.2 million, respectively. As of March 31, 2015 and 2014, receivables from related parties were $0.2 million and $0.1 million, respectively. As of March 31, 2015 and 2014, payables to related parties were $0.2 million and less than $0.1 million, respectively.
	On February 12, 2014, the Company entered into a share repurchase agreement with an investment fund associated with TPG Capital, pursuant to which the Company repurchased 1.9 million shares of its common stock at a price of $52.00 per share, for total consideration of $100.0 million.

Net_Capital_and_Regulatory_Req

Net Capital and Regulatory Requirements	3 Months Ended
	Mar. 31, 2015
Brokers and Dealers [Abstract]
Net Capital and Regulatory Requirements	Net Capital and Regulatory Requirements
	The Company operates in a highly regulated industry. Applicable laws and regulations restrict permissible activities and investments and require compliance with various financial and customer-related regulations. The consequences of noncompliance can include substantial monetary and non-monetary sanctions. In addition, the Company is also subject to comprehensive examinations and supervision by various governmental and self-regulatory agencies. These regulatory agencies generally have broad discretion to prescribe greater limitations on the operations of a regulated entity for the protection of investors or public interest. Furthermore, where the agencies determine that such operations are unsafe or unsound, fail to comply with applicable law, or are otherwise inconsistent with the laws and regulations or with the supervisory policies, greater restrictions may be imposed.
	The Company’s registered broker-dealer, LPL Financial, is subject to the SEC’s Uniform Net Capital Rule (Rule 15c3-1 under the Exchange Act), which requires the maintenance of minimum net capital, as defined. Net capital and the related net capital requirement may fluctuate on a daily basis. LPL Financial is a clearing broker-dealer and had net capital of $153.0 million with a minimum net capital requirement of $6.5 million as of March 31, 2015.
	The Company's subsidiary, The Private Trust Company N.A. (“PTC”), operates in a highly regulated industry and is subject to various regulatory capital requirements. Failure to meet minimum capital requirements can initiate certain mandatory and possible additional discretionary actions by regulators that, if undertaken, could have substantial monetary and non-monetary impacts to PTC's operations.
	As of March 31, 2015 and December 31, 2014, LPL Financial and PTC met all capital adequacy requirements to which they were subject.

Financial_Instruments_with_Off

Financial Instruments with Off-Balance-Sheet Credit Risk and Concentrations of Credit Risk	3 Months Ended
	Mar. 31, 2015
Concentration Risk Credit Risk Financial Instruments Off Balance Sheet Risk [Abstract]
Financial Instruments with Off-Balance-Sheet Credit Risk and Concentrations of Credit Risk	Financial Instruments with Off-Balance-Sheet Credit Risk and Concentrations of Credit Risk
	LPL Financial’s client securities activities are transacted on either a cash or margin basis. In margin transactions, LPL Financial extends credit to the advisor's client, subject to various regulatory and internal margin requirements, collateralized by cash or securities in the client’s account. As clients write options contracts or sell securities short, LPL Financial may incur losses if the clients do not fulfill their obligations and the collateral in the clients’ accounts is not sufficient to fully cover losses that clients may incur from these strategies. To control this risk, LPL Financial monitors margin levels daily and clients are required to deposit additional collateral, or reduce positions, when necessary.
	LPL Financial is obligated to settle transactions with brokers and other financial institutions even if its advisors' clients fail to meet their obligation to LPL Financial. Clients are required to complete their transactions on the settlement date, generally three business days after the trade date. If clients do not fulfill their contractual obligations, LPL Financial may incur losses. In addition, the Company occasionally enters into certain types of contracts to fulfill its sale of when, as, and if issued securities. When, as, and if issued securities have been authorized but are contingent upon the actual issuance of the security. LPL Financial has established procedures to reduce this risk by generally requiring that clients deposit cash or securities into their account prior to placing an order.
	LPL Financial may at times hold equity securities that are recorded on the unaudited condensed consolidated statements of financial condition at market value. While long inventory positions represent LPL Financial’s ownership of securities, short inventory positions represent obligations of LPL Financial to deliver specified securities at a contracted price, which may differ from market prices prevailing at the time of completion of the transaction. Accordingly, both long and short inventory positions may result in losses or gains to LPL Financial as market values of securities fluctuate. To mitigate the risk of losses, long and short positions are marked-to-market daily and are continuously monitored by LPL Financial.

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Event	Subsequent Events
	On April 28, 2015, the Board of Directors declared a cash dividend of $0.25 per share on the Company's outstanding common stock to be paid on May 21, 2015 to stockholders of record on May 11, 2015.
	On April 28, 2015, the Company's Board of Directors approved an increase in the Company's share repurchase plan by $200.0 million.
	******

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Consolidation	Consolidation
	These unaudited condensed consolidated financial statements include the accounts of LPLFH and its subsidiaries. Intercompany transactions and balances have been eliminated. Equity investments in which the Company exercises significant influence but does not exercise control and is not the primary beneficiary are accounted for using the equity method.
Use of Estimates	Use of Estimates
	The preparation of the unaudited condensed consolidated financial statements in conformity with GAAP requires the Company to make estimates and judgments that affect the reported amounts of assets and liabilities, revenue and expenses, and related disclosures of contingent assets and liabilities. These estimates are based on the information that is currently available and on various other assumptions that the Company believes to be reasonable under the circumstances. Actual results could vary from these estimates.
Reportable Segment	Reportable Segment
	The Company's internal reporting is organized into two service channels: Independent Advisor Services and Institution Services. These service channels are aggregated and viewed as one operating segment, and therefore, one reportable segment due to their similar economic characteristics, products and services, production and distribution processes, and regulatory environment.
Fair Value of Financial Instruments	Fair Value of Financial Instruments
	The Company’s financial assets and liabilities are carried at fair value or at amounts that, because of their short-term nature, approximate current fair value, with the exception of its held-to-maturity securities and indebtedness. The Company carries its held-to-maturity securities and indebtedness at amortized cost. The Company measures the implied fair value of its debt instruments using trading levels obtained from a third-party service provider. Accordingly, the debt instruments qualify as Level 2 fair value measurements.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements
	In April 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2015-03, Interest—Imputation of Interest, which simplifies the presentation of debt issuance costs on the balance sheet by presenting debt issuance costs as a direct deduction from the carrying amount of the related debt liability. ASU 2015-03 will become effective for the Company beginning January 1, 2016 and early adoption is permitted. The Company does not anticipate the adoption of ASU 2015-03 to have a material impact on its consolidated financial statements.

Restructuring_Tables

Restructuring (Tables)	3 Months Ended
	Mar. 31, 2015
Service Value Commitment [Member]
Restructuring Cost and Reserve [Line Items]
Summary of changes in accrued restructuring expense balances	The following table summarizes the balance of accrued expenses and the changes in the accrued amounts for the Program as of and for the three months ended March 31, 2015 (in thousands):
		Accrued Balance at December 31, 2014		Costs			Payments			Accrued Balance at March 31, 2015		Cumulative Costs Incurred to Date		Total
				Incurred										Expected
														Restructuring
														Costs
	Outsourcing and other related costs	$	—	$	755		$	(755	)	$	—	$	22,243	$	23,500
	Technology transformation costs	4,458		117			(4,305		)	270		30,035		30,300
	Employee severance obligations and other related costs	1,999		1,100			(147		)	2,952		9,985		13,400
	Asset impairments	—		—			—			—		842		842
	Total	$	6,457	$	1,972		$	(5,207	)	$	3,222	$	63,105	$	68,042
Fortigent Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Summary of changes in accrued restructuring expense balances	The following table summarizes the balance of accrued expenses and the changes in the accrued amounts for the Program as of and for the three months ended March 31, 2015 (in thousands):
		Costs		Payments			Non-cash			Accrued Balance at March 31, 2015		Cumulative Costs Incurred to Date		Total
		Incurred												Expected
														Restructuring
														Costs
	Employee severance obligations and other related costs	$	965	$	(69	)	$	—		$	896	$	965	$	4,500
	Relocation and related costs	278		—			—			278		278		2,000
	Lease restructuring charges	—		—			—			—		—		1,300
	Asset impairments	433		—			(433		)	—		433		1,200
	Total	$	1,676	$	(69	)	$	(433	)	$	1,174	$	1,676	$	9,000

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Financial assets and financial liabilities measured at fair value on a recurring basis	The following table summarizes the Company’s financial assets and financial liabilities measured at fair value on a recurring basis at March 31, 2015 (in thousands):
		Level 1		Level 2		Level 3		Total
	At March 31, 2015:
	Assets
	Cash equivalents	$	13,463	$	—	$	—	$	13,463
	Securities owned — trading:
	Money market funds	262		—		—		262
	Mutual funds	7,231		—		—		7,231
	Equity securities	167		—		—		167
	Debt securities	—		13		—		13
	U.S. treasury obligations	8,617		—		—		8,617
	Total securities owned — trading	16,277		13		—		16,290
	Other assets	91,593		5,711		—		97,304
	Total assets at fair value	$	121,333	$	5,724	$	—	$	127,057
	Liabilities
	Securities sold, but not yet purchased:
	Equity securities	$	55	$	—	$	—	$	55
	Debt securities	—		22		—		22
	Total securities sold, but not yet purchased	55		22		—		77
	Accounts payable and accrued liabilities	—		—		527		527
	Total liabilities at fair value	$	55	$	22	$	527	$	604
	The following table summarizes the Company’s financial assets and financial liabilities measured at fair value on a recurring basis at December 31, 2014 (in thousands):
		Level 1		Level 2		Level 3		Total
	At December 31, 2014:
	Assets
	Cash equivalents	$	22,592	$	—	$	—	$	22,592
	Securities owned — trading:
	Money market funds	293		—		—		293
	Mutual funds	7,570		—		—		7,570
	Equity securities	224		—		—		224
	Debt securities	—		1,379		—		1,379
	U.S. treasury obligations	4,000		—		—		4,000
	Total securities owned — trading	12,087		1,379		—		13,466
	Other assets	75,540		5,058		—		80,598
	Total assets at fair value	$	110,219	$	6,437	$	—	$	116,656
	Liabilities
	Securities sold, but not yet purchased:
	Mutual funds	$	13	$	—	$	—	$	13
	Equity securities	279		—		—		279
	Debt securities	—		10		—		10
	Total securities sold, but not yet purchased	292		10		—		302
	Accounts payable and accrued liabilities	—		—		527		527
	Total liabilities at fair value	$	292	$	10	$	527	$	829

HeldtoMaturity_Securities_Tabl

Held-to-Maturity Securities (Tables)	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Summary of amortized cost, gross unrealized gain (loss), and fair value of securities held-to-maturity	The amortized cost, gross unrealized gain or loss, and fair value of securities held-to-maturity were as follows (in thousands):
		March 31,		December 31,
		2015		2014
	Amortized cost	$	9,350	$	8,594
	Gross unrealized gain (loss)	13		(14		)
	Fair value	$	9,363	$	8,580
Maturities of securities held-to-maturity	At March 31, 2015, the securities held-to-maturity were scheduled to mature as follows (in thousands):
		Within one year		After one but within five years			After five but within ten years		Total
	U.S. government notes — at amortized cost	$	4,100	$	4,750		$	500	$	9,350
	U.S. government notes — at fair value	$	4,102	$	4,753		$	508	$	9,363

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of non-deliverable foreign currency contracts	The details related to the remaining non-deliverable foreign currency contracts at March 31, 2015 are as follows (in millions, except foreign exchange rate):
		Settlement Date		Hedged Notional Amount (INR)		Contractual INR/USD Foreign Exchange Rate	Hedged Notional Amount (USD)
	Cash flow hedge #2	6/2/15		560.4		69.35	$	8.1
	Cash flow hedge #3	6/2/16		560.4		72.21	7.8
	Cash flow hedge #4	6/2/17		560.4		74.2	7.5
	Total hedged amount						$	23.4
Schedule of the fair value of the derivative instruments	The fair value of the derivative instruments, included in other assets in the unaudited condensed consolidated statements of financial condition, were as follows (in thousands):
		March 31,			December 31,
		2015			2014
	Cash flow hedges	$	1,916		$	1,179

Debt_Tables

Debt (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Outstanding borrowings	The Company’s outstanding borrowings were as follows (dollars in thousands):
			March 31, 2015				December 31, 2014
	Senior Secured Credit Facilities	Maturity			Interest				Interest
			Balance		Rate		Balance		Rate
	Revolving Credit Facility	9/30/19	$	120,000	4.15	%	$	110,000	4.75	%
	Senior secured term loans:
	Term Loan A	9/30/19	459,375		2.68	%	459,375		2.67	%
	Term Loan B	3/29/19	1,062,173		3.25	%	1,064,883		3.25	%
	Total borrowings		1,641,548				1,634,258
	Less current portion		130,839				120,839
	Long-term borrowings — net of current portion		$	1,510,709			$	1,513,419

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2015
Stockholders' Equity Note [Abstract]
Summary of share repurchase program activity	For the three months ended March 31, 2015 and 2014, the Company had the following activity under its approved share repurchase programs (in millions, except share and per share data):
							Three Months Ended March 31,
							2015					2014
	Approval Date		Authorized Repurchase Amount		Amount Remaining at March 31, 2015		Shares Purchased	Weighted-Average Price Paid Per Share		Total Cost(1)		Shares Purchased	Weighted-Average Price Paid Per Share		Total Cost(1)
	28-May-13		$	200	$	—	—	$	—	$	—	1,306,288	$	52	$	67.9
	10-Feb-14		$	150	—		—	—		—		616,788	52		32.1
	1-Oct-14		$	150	62.9		679,772	44.15		30		—	—		—
					$	62.9	679,772	$	44.15	$	30	1,923,076	$	52	$	100
	_________________________
	-1	Included in the total cost of shares purchased is a commission fee of $0.02 per share.

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted-average assumptions used for calculating the fair value of stock options and warrants with the Black-Scholes valuation model	The following table presents the weighted-average assumptions used in the Black-Scholes valuation model by the Company in calculating the fair value of its employee, officer, and director stock options that have been granted during the three months ended March 31, 2015:
	Expected life (in years)	5.3
	Expected stock price volatility	25.78		%
	Expected dividend yield	2.3		%
	Risk-free interest rate	1.58		%
	Fair value of options	$	8.82
	The fair value of each stock option or warrant awarded to advisors and financial institutions is estimated on the date of the grant and revalued at each reporting period using the Black-Scholes valuation model with the following weighted-average assumptions used during the three months ended March 31, 2015:
	Expected life (in years)	6.74
	Expected stock price volatility	25.69		%
	Expected dividend yield	2.27		%
	Risk-free interest rate	1.69		%
	Fair value of options	$	14.53
Summary of stock option and warrant activity	The following table summarizes the Company’s stock option and warrant activity for the three months ended March 31, 2015:
		Number of			Weighted-		Weighted-		Aggregate
		Shares			Average		Average		Intrinsic
					Exercise Price		Remaining		Value
							Contractual		(In thousands)
							Term
							(Years)
	Outstanding — December 31, 2014	6,287,410			$	31.59
	Granted	1,100,197			45.55
	Exercised	(146,559	)		28.49
	Forfeited	(179,731	)		37.65
	Outstanding — March 31, 2015	7,061,317			$	33.68	6.7		$	71,898
	Exercisable — March 31, 2015	4,101,683			$	29.24	5.45		$	59,952
Summary of outstanding stock options and warrant information	The following table summarizes information about outstanding stock options and warrants at March 31, 2015:
		Outstanding							Exercisable
	Range of Exercise Prices	Total			Weighted-		Weighted-		Number of			Weighted-
		Number of			Average		Average		Shares			Average
		Shares			Exercise		Remaining					Exercise
					Price		Life					Price
							(Years)
	$2.38	17,382			$	2.38	0.17		17,382			$	2.38
	$15.84 - $23.02	1,255,407			21.41		4.2		1,255,407			21.41
	$23.41 - $30.00	1,517,035			28.11		5.51		1,015,575			27.8
	$31.60 - $32.33	1,431,890			31.89		7.4		773,151			31.93
	$34.01 - $39.60	1,111,875			34.59		5.91		831,396			34.48
	$45.55 - $54.81	1,727,728			48.7		9.58		208,772			54.81
		7,061,317			$	33.68	6.7		4,101,683			$	29.24
Summary of restricted stock awards and restricted stock units activity	The following summarizes the Company’s activity in its restricted stock awards and restricted stock units for the three months ended March 31, 2015:
		Restricted Stock Awards					Restricted Stock Units
		Number of			Weighted-Average		Number of			Weighted-Average
		Shares			Grant-Date		Shares			Grant-Date
					Fair Value					Fair Value
	Nonvested at December 31, 2014	33,634			$	42.78	546,725			$	43.34
	Granted	—			—		180,121			43.5
	Vested	(7,910	)		31.6		(109,715	)		38.99
	Forfeited	—			—		(24,768	)		49.53
	Nonvested at March 31, 2015	25,724			$	46.22	592,363			$	43.94

Earnings_per_Share_Tables

Earnings per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Basic and diluted earnings per share computations	The calculation of basic and diluted earnings per share for the three months ended March 31, 2015 and 2014 is as follows (in thousands, except per share data):
		Three Months Ended March 31,
		2015		2014
	Net income	$	50,678	$	53,135
	Basic weighted-average number of shares outstanding	96,551		101,279
	Dilutive common share equivalents	1,676		2,060
	Diluted weighted-average number of shares outstanding	98,227		103,339
	Basic earnings per share	$	0.52	$	0.52
	Diluted earnings per share	$	0.52	$	0.51

Summary_of_Significant_Account2

Summary of Significant Accounting Policies Reportable Segment (Details)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Number of Service Channels	2
Number of Operating Segments	1
Number of Reportable Segments	1

Summary_of_Significant_Account3

Summary of Significant Accounting Policies Fair Value of Financial Instruments (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Senior secured credit facilities	$1,641,548,000	$1,634,258,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of indebtedness	$1,644,800,000	$1,620,800,000

Restructuring_Details

Restructuring (Details) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Service Value Commitment [Member]
Restructuring Cost and Reserve [Line Items]
Total Expected Restructuring Costs	$68,042
Fortigent Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Total Expected Restructuring Costs	$9,000

Restructuring_Table_SVC_Detail

Restructuring Table (SVC) (Details) (Service Value Commitment [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Restructuring Reserve [Roll Forward]
Accrued Balance, Beginning of Period	$6,457
Costs Incurred	1,972
Payments	-5,207
Accrued Balance, End of Period	3,222
Cumulative Costs Incurred to Date	63,105
Total Expected Restructuring Costs	68,042
Outsourcing and other related costs
Restructuring Reserve [Roll Forward]
Accrued Balance, Beginning of Period	0
Costs Incurred	755
Payments	-755
Accrued Balance, End of Period	0
Cumulative Costs Incurred to Date	22,243
Total Expected Restructuring Costs	23,500
Technology transformation costs
Restructuring Reserve [Roll Forward]
Accrued Balance, Beginning of Period	4,458
Costs Incurred	117
Payments	-4,305
Accrued Balance, End of Period	270
Cumulative Costs Incurred to Date	30,035
Total Expected Restructuring Costs	30,300
Employee severance obligations and other related costs
Restructuring Reserve [Roll Forward]
Accrued Balance, Beginning of Period	1,999
Costs Incurred	1,100
Payments	-147
Accrued Balance, End of Period	2,952
Cumulative Costs Incurred to Date	9,985
Total Expected Restructuring Costs	13,400
Asset impairments
Restructuring Reserve [Roll Forward]
Accrued Balance, Beginning of Period	0
Costs Incurred	0
Payments	0
Accrued Balance, End of Period	0
Cumulative Costs Incurred to Date	842
Total Expected Restructuring Costs	$842

Restructuring_Restructuring_Ta

Restructuring Restructuring Table (Fortigent) (Details) (Fortigent Restructuring [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Restructuring Cost and Reserve [Line Items]
Costs Incurred	$1,676
Payments	-69
Non-cash	-433
Accrued Balance, End of Period	1,174
Cumulative Costs Incurred to Date	1,676
Total Expected Restructuring Costs	9,000
Employee severance obligations and other related costs
Restructuring Cost and Reserve [Line Items]
Costs Incurred	965
Payments	-69
Non-cash	0
Accrued Balance, End of Period	896
Cumulative Costs Incurred to Date	965
Total Expected Restructuring Costs	4,500
Relocation and related costs
Restructuring Cost and Reserve [Line Items]
Costs Incurred	278
Payments	0
Non-cash	0
Accrued Balance, End of Period	278
Cumulative Costs Incurred to Date	278
Total Expected Restructuring Costs	2,000
Lease restructuring charges
Restructuring Cost and Reserve [Line Items]
Costs Incurred	0
Payments	0
Non-cash	0
Accrued Balance, End of Period	0
Cumulative Costs Incurred to Date	0
Total Expected Restructuring Costs	1,300
Asset impairments
Restructuring Cost and Reserve [Line Items]
Costs Incurred	433
Payments	0
Non-cash	-433
Accrued Balance, End of Period	0
Cumulative Costs Incurred to Date	433
Total Expected Restructuring Costs	$1,200

Fair_Value_Measurements_Financ

Fair Value Measurements Financial Assets and Liabilities Measured on a Recurring and Nonrecurring Basis (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]
Securities owned — trading	$16,290	$13,466
Securities sold, but not yet purchased	77	302
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	13,463	22,592
Securities owned — trading	16,290	13,466
Other assets	97,304	80,598
Total assets at fair value	127,057	116,656
Securities sold, but not yet purchased	77	302
Accounts payable and accrued liabilities	527	527
Total liabilities at fair value	604	829
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	13,463	22,592
Securities owned — trading	16,277	12,087
Other assets	91,593	75,540
Total assets at fair value	121,333	110,219
Securities sold, but not yet purchased	55	292
Accounts payable and accrued liabilities	0	0
Total liabilities at fair value	55	292
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Securities owned — trading	13	1,379
Other assets	5,711	5,058
Total assets at fair value	5,724	6,437
Securities sold, but not yet purchased	22	10
Accounts payable and accrued liabilities	0	0
Total liabilities at fair value	22	10
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Securities owned — trading	0	0
Other assets	0	0
Total assets at fair value	0	0
Securities sold, but not yet purchased	0	0
Accounts payable and accrued liabilities	527	527
Total liabilities at fair value	527	527
Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities sold, but not yet purchased		13
Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities sold, but not yet purchased		13
Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities sold, but not yet purchased		0
Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities sold, but not yet purchased		0
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities sold, but not yet purchased	55	279
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities sold, but not yet purchased	55	279
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities sold, but not yet purchased	0	0
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities sold, but not yet purchased	0	0
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities sold, but not yet purchased	22	10
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities sold, but not yet purchased	0	0
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities sold, but not yet purchased	22	10
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities sold, but not yet purchased	0	0
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	262	293
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	262	293
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	0	0
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	0	0
Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	7,231	7,570
Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	7,231	7,570
Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	0	0
Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	0	0
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	167	224
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	167	224
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	0	0
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	0	0
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	13	1,379
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	0	0
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	13	1,379
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	0	0
U.S. treasury obligations | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	8,617	4,000
U.S. treasury obligations | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	8,617	4,000
U.S. treasury obligations | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	0	0
U.S. treasury obligations | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities owned — trading	$0	$0

HeldtoMaturity_Securities_Deta

Held-to-Maturity Securities (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Summary of amortized cost, gross unrealized (loss) gain and fair value of securities held-to-maturity
Amortized cost	$9,350	$8,594
U.S. government notes
Summary of amortized cost, gross unrealized (loss) gain and fair value of securities held-to-maturity
Amortized cost	9,350	8,594
Gross unrealized gain (loss)	13
Gross unrealized gain (loss)		-14
Fair value	$9,363	$8,580

HeldtoMaturity_Securities_Deta1

Held-to-Maturity Securities (Details 1) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Maturities of securities held-to-maturity
U.S. government notes - at amortized cost, Total	$9,350	$8,594
U.S. government notes
Maturities of securities held-to-maturity
U.S. government notes - at amortized cost, Within one year	4,100
U.S. government notes - at amortized cost, After one but within five years	4,750
U.S. government notes - at amortized cost, After five through ten years	500
U.S. government notes - at amortized cost, Total	9,350	8,594
U.S. government notes - at fair value, Total	9,363	8,580
Fair Value, Inputs, Level 1 [Member] | U.S. government notes
Maturities of securities held-to-maturity
U.S. government notes - at fair value, Within one year	4,102
U.S. government notes - at fair value, After one but within five years	4,753
U.S. government notes - at fair value, After five through ten years	$508

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Details)	Mar. 31, 2015	Jun. 30, 2014	Jun. 30, 2014	Mar. 31, 2015	Mar. 31, 2015	Mar. 31, 2015	Mar. 31, 2015	Mar. 31, 2015	Mar. 31, 2015
In Millions, unless otherwise specified	USD ($)	Cash Flow Hedge 1 [Member]	Cash Flow Hedge 1 [Member]	Cash Flow Hedge 2 [Member]	Cash Flow Hedge 2 [Member]	Cash Flow Hedge 3 [Member]	Cash Flow Hedge 3 [Member]	Cash Flow Hedge 4 [Member]	Cash Flow Hedge 4 [Member]
		USD ($)	INR	USD ($)	INR	USD ($)	INR	USD ($)	INR
Derivative [Line Items]
Settlement Date				2-Jun-15	2-Jun-15	2-Jun-16	2-Jun-16	2-Jun-17	2-Jun-17
Hedged Notional Amount	$23.40	$8.50	560.4	$8.10	560.4	$7.80	560.4	$7.50	560.4
Contractual INR/USD Foreign Exchange Rate				69.35	69.35	72.21	72.21	74.2	74.2

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Details 1) (Other Assets [Member], USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Fair value of cash flow hedges	$1,916	$1,179

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Details Textuals) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Number of cash flow hedges entered into by the Company	4
Cash received on settlement of Cash Flow Hedge 1		$1

Debt_Credit_Agreement_Outstand

Debt (Credit Agreement Outstanding)(Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Long-term Debt, Current and Noncurrent [Abstract]
Balance	$1,641,548	$1,634,258
Less current portion	130,839	120,839
Long-term borrowings — net of current portion	1,510,709	1,513,419
Secured Debt [Member] | Term Loan A [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Balance	459,375	459,375
Interest Rate	2.68%	2.67%
Secured Debt [Member] | Term Loan B [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Balance	1,062,173	1,064,883
Interest Rate	3.25%	3.25%
Revolving Credit Facility [Member] | Swingline Loan [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Balance	$120,000	$110,000
Interest Rate	4.15%	4.75%

Debt_Credit_Agreement_Textuals

Debt (Credit Agreement Textuals)(Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Oct. 01, 2014
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity			$400
Applicable interest rate margin	2.50%	2.50%
Letters of credit, amount outstanding	$21.50
Secured Debt [Member] | Eurodollar Rate [Member]
Debt Instrument [Line Items]
Applicable interest rate margin	2.50%
Secured Debt [Member] | Term Loan B [Member]
Debt Instrument [Line Items]
Payment terms of senior secured term loans	Term Loan B includes quarterly payments at an annual rate of 1.0% of principal per year, with the remaining principal and accrued interest due upon maturity.
Secured Debt [Member] | Term Loan A and Term Loan B [Member]
Debt Instrument [Line Items]
Interest rate terms of senior secured term loans	Borrowings under Term Loan A and Term Loan B bear interest at a base rate equal to a LIBOR based rate (the “Eurodollar Rate”) plus the applicable interest rate margin, or an alternative base rate (“ABR”) plus the applicable interest rate margin. The Eurodollar Rate with respect to Term Loan B shall in no event be less than 0.75%. The ABR is equal to the greatest of (a) the prime rate in effect on such day; (b) the effective federal funds rate in effect on such day plus 0.50%; (c) the Eurodollar Rate plus 1.00%; or (d) solely in the case of Term Loan B, 1.75%.
Secured Debt [Member] | Term Loan A and Term Loan B [Member] | Eurodollar Rate [Member]
Debt Instrument [Line Items]
Applicable interest rate margin		2.50%

Debt_Debt_Bank_Loans_Payable_T

Debt Debt (Bank Loans Payable Textuals) (Details) (Line of Credit [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of credit, amount outstanding	$0
Total number of uncommitted lines of credit	3
Number of uncommitted lines of credit with an unspecified limit	2
Line of credit, maximum borrowing capacity	$200

Commitments_and_Contingencies_

Commitments and Contingencies (Leases) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Leases, Operating [Abstract]
Rent expense, operating leases	$6.60	$8.80

Commitments_and_Contingencies_1

Commitments and Contingencies Commitments and Contingencies (Other Commitments) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Brokers and Dealers [Abstract]
Collateral security	$349.80
Amount pledged with client-owned securities	31.4
Remaining collateral securities that can be re-pledged, loaned, or sold	318.4
Security Owned and Pledged as Collateral, Fair Value [Abstract]
Trading securities pledged to clearing organizations	$4.30	$4

Commitments_and_Contingencies_2

Commitments and Contingencies Commitments and Contingencies (Legal) (Details) (USD $)	Mar. 31, 2015
Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Range of Possible Loss, Portion Not Accrued	$0
Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Range of Possible Loss, Portion Not Accrued	$8,000,000

Stockholders_Equity_Dividends_

Stockholders' Equity (Dividends Paid) (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Stockholders' Equity Note [Abstract]
Dividend per share of common stock	$0.25	$0.24
Total cash dividends paid during the quarter	$24,156	$24,097

Stockholdes_Equity_Share_Repur

Stockholdes' Equity (Share Repurchases) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Equity, Class of Treasury Stock [Line Items]
Amount Remaining at March 31, 2015	$62,900,000
Shares Purchased	679,772		1,923,076
Weighted-Average Price Paid Per Share	$44.15		$52
Total Cost	30,014,000	[1]	100,000,000	[1]
Commission Fee Paid Per Repurchased Share	$0.02
28-May-13
Equity, Class of Treasury Stock [Line Items]
Authorized Repurchase Amount	200,000,000
Amount Remaining at March 31, 2015	0
Shares Purchased	0		1,306,288
Weighted-Average Price Paid Per Share	$0		$52
Total Cost	0	[1]	67,900,000	[1]
10-Feb-14
Equity, Class of Treasury Stock [Line Items]
Authorized Repurchase Amount	150,000,000
Amount Remaining at March 31, 2015	0
Shares Purchased	0		616,788
Weighted-Average Price Paid Per Share	$0		$52
Total Cost	0	[1]	32,100,000	[1]
October 2014 [Member]
Equity, Class of Treasury Stock [Line Items]
Authorized Repurchase Amount	150,000,000
Amount Remaining at March 31, 2015	62,900,000
Shares Purchased	679,772		0
Weighted-Average Price Paid Per Share	$44.15		$0
Total Cost	$30,000,000	[1]	$0	[1]
[1]	Included in the total cost of shares purchased is a commission fee of $0.02 per share.

ShareBased_Compensation_Texual

Share-Based Compensation (Texuals) (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares	12,055,945
Authorized unissued shares	5,241,049
Stock options and warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	10 years
Minimum [Member] | Stock options and warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Minimum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	2 years
Maximum [Member] | Stock options and warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Maximum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Employees, officers, and directors [Member] | Stock options and warrants [Member]
Share-based compensation:
Share-based compensation	$4.10	$3.80
Share-based compensation cost unrecognized	24.1
Non-vested compensation cost weighted-average period	2 years 2 months 12 days
Employees, officers, and directors [Member] | Restricted Stock [Member]
Share-based compensation:
Share-based compensation	2	1.2
Share-based compensation cost unrecognized	15.5
Non-vested compensation cost weighted-average period	2 years 4 months 6 days
Advisors and Financial Institutions [Member] | Stock options and warrants [Member]
Share-based compensation:
Share-based compensation	0.6	3.2
Share-based compensation cost unrecognized	6.4
Non-vested compensation cost weighted-average period	2 years 1 month 18 days
Advisors and Financial Institutions [Member] | Restricted stock units (RSUs) [Member]
Share-based compensation:
Share-based compensation	0.4
Share-based compensation cost unrecognized	$3.40
Non-vested compensation cost weighted-average period	2 years 1 month 15 days

ShareBased_Compensation_Stock_

Share-Based Compensation Stock Option and Warrant Assumptions (Details) (Stock options and warrants [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Advisors and Financial Institutions [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected life (in years)	6 years 8 months 26 days
Expected stock price volatility	25.69%
Expected dividend yield	2.27%
Risk-free interest rate	1.69%
Fair value of options	$14.53
Employees, officers, and directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected life (in years)	5 years 3 months 18 days
Expected stock price volatility	25.78%
Expected dividend yield	2.30%
Risk-free interest rate	1.58%
Fair value of options	$8.82

ShareBased_Compensation_Stock_1

Share-Based Compensation Stock Option and Warrant Activity (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Shares Outstanding, Beginning Balance	6,287,410
Number of Shares, Granted	1,100,197
Number of Shares, Exercised	-146,559
Number of Shares, Forfeited	-179,731
Number of Shares Outstanding, Ending Balance	7,061,317
Number of Shares Exercisable, Ending Balance	4,101,683
Weighted-Average Exercise Price, Granted	$45.55
Weighted-Average Exercise Price, Exercised	$28.49
Weighted-Average Exercise Price, Forfeited	$37.65
Weighted-Average Exercise Price, Outstanding, Ending Balance	$33.68	$31.59
Weighted-Average Exercise Price, Exercisable, Ending Balance	$29.24
Weighted-Average Remaining Contractual Term, Options Outstanding	6 years 8 months 12 days
Weighted-Average Remaining Contractual Term, Options Exercisable	5 years 5 months 12 days
Aggregate Intrinsic Value, Outstanding, Ending Balance	$71,898
Aggregate Intrinsic Value, Outstanding, Ending Balance	$59,952

ShareBased_Compensation_Outsta

Share-Based Compensation Outstanding Stock Options and Warrant Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2015
Summary information about outstanding stock options and warrants
Total number of shares, Outstanding	7,061,317
Weighted-average remaining life (years), Outstanding	6 years 8 months 12 days
Weighted-average exercise price, Outstanding	$33.68
Number of shares, Exercisable	4,101,683
Weighted-average exercise price, Exercisable	$29.24
$2.38
Summary information about outstanding stock options and warrants
Total number of shares, Outstanding	17,382
Weighted-average remaining life (years), Outstanding	0 years 2 months 1 day
Weighted-average exercise price, Outstanding	$2.38
Number of shares, Exercisable	17,382
Weighted-average exercise price, Exercisable	$2.38
$15.84 - $23.02
Summary information about outstanding stock options and warrants
Total number of shares, Outstanding	1,255,407
Weighted-average remaining life (years), Outstanding	4 years 2 months 12 days
Weighted-average exercise price, Outstanding	$21.41
Number of shares, Exercisable	1,255,407
Weighted-average exercise price, Exercisable	$21.41
$23.41 - $30.00
Summary information about outstanding stock options and warrants
Total number of shares, Outstanding	1,517,035
Weighted-average remaining life (years), Outstanding	5 years 6 months 3 days
Weighted-average exercise price, Outstanding	$28.11
Number of shares, Exercisable	1,015,575
Weighted-average exercise price, Exercisable	$27.80
$31.60 - $32.33
Summary information about outstanding stock options and warrants
Total number of shares, Outstanding	1,431,890
Weighted-average remaining life (years), Outstanding	7 years 4 months 24 days
Weighted-average exercise price, Outstanding	$31.89
Number of shares, Exercisable	773,151
Weighted-average exercise price, Exercisable	$31.93
$34.01 - $39.60
Summary information about outstanding stock options and warrants
Total number of shares, Outstanding	1,111,875
Weighted-average remaining life (years), Outstanding	5 years 10 months 29 days
Weighted-average exercise price, Outstanding	$34.59
Number of shares, Exercisable	831,396
Weighted-average exercise price, Exercisable	$34.48
$45.55 - $54.81
Summary information about outstanding stock options and warrants
Total number of shares, Outstanding	1,727,728
Weighted-average remaining life (years), Outstanding	9 years 6 months 29 days
Weighted-average exercise price, Outstanding	$48.70
Number of shares, Exercisable	208,772
Weighted-average exercise price, Exercisable	$54.81

Restricted_Stock_Activity_Deta

Restricted Stock Activity (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Shares, Beginning Balance	33,634
Number of Shares, Granted	0
Number of Shares, Vested	-7,910
Number of Shares, Forfeited	0
Number of Shares, Ending Balance	25,724
Weighted-Average Grant-Date Fair Value, Beginning Balance	$46.22	$42.78
Weighted-Average Grant-Date Fair Value, Granted	$0
Weighted-Average Grant-Date Fair Value, Vested	$31.60
Weighted-Average Grant-Date Fair Value, Forfeited	$0
Weighted-Average Grant-Date Fair Value, Ending Balance	$46.22	$42.78
Restricted stock units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Shares, Beginning Balance	546,725
Number of Shares, Granted	180,121
Number of Shares, Vested	-109,715
Number of Shares, Forfeited	-24,768
Number of Shares, Ending Balance	592,363
Weighted-Average Grant-Date Fair Value, Beginning Balance	$43.94	$43.34
Weighted-Average Grant-Date Fair Value, Granted	$43.50
Weighted-Average Grant-Date Fair Value, Vested	$38.99
Weighted-Average Grant-Date Fair Value, Forfeited	$49.53
Weighted-Average Grant-Date Fair Value, Ending Balance	$43.94	$43.34

Earnings_per_Share_Details

Earnings per Share (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net income	$50,678	$53,135
Basic weighted-average number of shares outstanding	96,551	101,279
Dilutive common share equivalents	1,676	2,060
Diluted weighted-average number of shares outstanding	98,227	103,339
Basic earnings per share	$0.52	$0.52
Diluted earnings per share	$0.52	$0.51

Earnings_per_Share_Textuals_De

Earnings per Share (Textuals) (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of Earnings per Share amount	1,595,614	941,406

Income_Taxes_Details

Income Taxes (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	35.00%
Effective income tax rate	40.10%	39.30%

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)	0 Months Ended	3 Months Ended
	Feb. 12, 2014	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014
Related Party Transaction [Line Items]
Shares Purchased		679,772		1,923,076
Weighted-Average Price Paid Per Share		$44.15		$52
Total Cost of Shares Repurchased During Period		$30,014,000	[1]	$100,000,000	[1]
TPG Capital [Member]
Related Party Transaction [Line Items]
Revenue from related party transactions		300,000		100,000
Related party transactions expenses		1,200,000		200,000
Related party receivables		200,000				100,000
Related party payables		200,000
Shares Purchased	1,900,000
Weighted-Average Price Paid Per Share	$52
Total Cost of Shares Repurchased During Period	$100,000,000
[1]	Included in the total cost of shares purchased is a commission fee of $0.02 per share.

Net_Capital_and_Regulatory_Req1

Net Capital and Regulatory Requirements (Details) (USD $)	Mar. 31, 2015
In Millions, unless otherwise specified
Net capital and net capital requirements for the Company's broker-dealer subsidiaries
Net Capital	$153
Minimum Net Capital Required for Broker-Dealer Subsidiary	$6.50

Subsequent_Events_Subsequent_E

Subsequent Events Subsequent Events (Details) (USD $)	0 Months Ended
In Millions, except Per Share data, unless otherwise specified	Apr. 29, 2015	Mar. 31, 2015
Subsequent Event [Line Items]
Remaining Authorized Repurchase Amount		$62.90
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends Payable, Date Declared	28-Apr-15
Dividends Payable, Amount Declared Per Share	$0.25
Dividends Payable, Date to be Paid	21-May-15
Dividends Payable, Date of Record	11-May-15
April 2015 [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Authorized Repurchase Amount	$200