Summary of Significant Accounting Policies | Summary of Significant Accounting Policies Basis of Presentation These consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States ( “ GAAP ” ), which require the Company to make estimates and assumptions regarding the valuation of certain financial instruments, intangible assets, allowance for doubtful accounts, share-based compensation, accruals for liabilities, income taxes, revenue and expense accruals, and other matters that affect the consolidated financial statements and related disclosures. Actual results could differ from those estimates under different assumptions or conditions and the differences may be material to the consolidated financial statements. Consolidation These 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. Reportable Segment Management has determined that our company operates in one segment, given the similarities in economic characteristics between our operations and the common nature of our products and services, production and distribution process, and regulatory environment. Revenue Recognition Substantially all of the Company's revenues are based on contractual arrangements. In determining the appropriate recognition of commissions, the Company reviews the terms and conditions of the brokerage account agreements between the Company and its advisors' clients, representative agreements with its advisors, which include payout rates and terms, and selling agreements with product sponsors for packaged investment products such as mutual funds, annuities, insurance, and alternative investments. In determining the appropriate recognition of advisory revenues, the Company reviews the terms and conditions of the advisory agreements between the advisors' clients and the applicable registered investment advisor ( “ RIA ” ), representative agreements with its advisors, and agreements with third parties who provide specific investment management or investment strategies. Revenues are recognized in the periods in which the related services are performed provided that persuasive evidence of an arrangement exists, the fee is fixed or determinable, and collectability is reasonably assured. Payments received by the Company in advance of the performance of service are deferred and recognized as revenue when earned. Management considers the nature of the Company's contractual arrangements in determining whether to recognize certain types of revenue on the basis of the gross amount billed or net amount retained after payments are made to providers of certain services related to the product or service offering. The main factors the Company uses to determine whether to record revenue on a gross or net basis are whether: • the Company is primarily responsible for the service to the advisor and their client; • the Company has discretion in establishing fees paid by the client and fees due to the third-party service provider; and • the Company is involved in the determination of product or service specifications. When client fees include a portion of charges that are paid to another party and the Company is primarily responsible for providing the service to the client, revenue is recognized on a gross basis in an amount equal to the fee paid by the client. The cost of revenues recognized is the amount due to the other party and is recorded as commission and advisory expense in the consolidated statements of income. In instances in which another party is primarily responsible for providing the service to the client, revenue is recognized in the net amount retained by the Company. The portion of the fees that are collected from the client by the Company and remitted to the other party are considered pass-through amounts and accordingly are not a component of revenues or cost of revenues. Commission Revenues Commission revenues represent commissions generated by the Company's advisors for their clients' purchases and sales of securities on exchanges and over-the-counter, as well as purchases of various investment products such as mutual funds, variable and fixed annuities, alternative investments including non-traded real estate investment trusts and business development companies, fixed income, insurance, group annuities, and option and commodity transactions. The Company generates two types of commission revenues: transaction-based sales commissions that occur at the point of sale, as well as trailing commissions for which the Company provides ongoing support, awareness, and education to clients of its advisors. Transaction-based sales commissions are recognized as revenue on a trade-date basis, which is when the Company's performance obligations in generating the commissions have been substantially completed. The Company settles a significant volume of transactions that are initiated directly between its advisors and product sponsors, particularly with regard to mutual fund, 529 education savings plan, fixed and variable annuity, and insurance products. As a result, management must estimate a portion of its commission revenues earned from clients for purchases and sales of these products for each accounting period for which the proceeds have not yet been received. These estimates are based on the amount of commissions earned from transactions in these products in prior periods. Trailing commission revenues include mutual fund, 529 education savings plan, and fixed and variable product trailing fees that are recurring in nature. These trailing fees are earned by the Company based on a percentage of the current market value of clients' investment holdings in trail-eligible assets, and recognized over the period during which services are performed. Because trailing commission revenues are generally paid in arrears, management estimates the majority of trailing commission revenues earned during each period. These estimates are based on a number of factors, including market levels and the amount of trailing commission revenues received in prior periods. Commission revenue accruals are classified within receivables from product sponsors, broker-dealers, and clearing organizations in the consolidated statements of financial condition. A substantial portion of the commission revenue is ultimately paid to the advisors. The Company records an estimate for commissions payable based upon average payout ratios for each product for which the Company has accrued commission revenue. Such amounts are classified as accrued commission and advisory expenses payable in the consolidated statements of financial condition and commission and advisory expense in the consolidated statements of income. Advisory Revenues The Company records fees charged to clients as advisory revenues in advisory accounts where LPL Financial is the RIA. A substantial portion of these advisory fees are paid to the related advisor and these payments are classified as commission and advisory expense in the consolidated statements of income. Certain advisors conduct their advisory business through separate entities by establishing their own RIA firm pursuant to the Advisers Act or through their respective states' investment advisory licensing rules, rather than using the Company's corporate RIA platform. These independent entities, or Hybrid RIAs, engage the Company for clearing, regulatory, and custody services, as well as access to the Company's investment advisory platforms. The advisory revenue generated by these Hybrid RIAs is earned by the advisors, and accordingly not included in the Company's advisory revenues. The Company charges separate fees to Hybrid RIAs for technology, custody, administrative, and clearing services, primarily based on the value of assets within these advisory accounts, which are classified as advisory revenues in the consolidated statements of income. Asset-Based Revenues Asset-based revenues are comprised of fees from cash sweep programs, financial product manufacturer sponsorship programs, and omnibus processing and networking services and are recognized ratably over the period in which services are provided. Transaction and Fee Revenues The Company charges fees for executing certain transactions in client accounts. Transaction related charges are recognized on a trade-date basis. Other fees relate to services provided and other account charges generally outlined in agreements with clients, advisors, and financial institutions. Such fees are recognized as services are performed or as earned, as applicable. In addition, the Company offers various services for which fees are charged on a subscription basis and recognized over the subscription period. Interest Income, Net of Interest Expense The Company earns interest income from its cash equivalents and client margin balances, less interest expense on related transactions. Because interest expense incurred in connection with cash equivalents and client margin balances is completely offset by revenue on related transactions, the Company considers such interest to be an operating expense. Interest expense from operations for the years ended December 31, 2016 , 2015 , and 2014 did not exceed $1.0 million . Compensation and Benefits The Company records compensation and benefits expense for all cash and deferred compensation, benefits, and related taxes as earned by its employees. Compensation and benefits expense also includes fees earned by temporary employees and contractors who perform similar services to those performed by the Company’s employees, primarily software development and project management activities. Share-Based Compensation Certain employees, officers, directors, advisors, and financial institutions of the Company participate in various long-term incentive plans that provide for granting stock options, warrants, restricted stock awards, restricted stock units, and deferred stock units. Stock options and warrants generally vest in equal increments over a three - to five -year period and expire on the ten th anniversary following the date of grant. Restricted stock awards, restricted stock units, and deferred stock units generally vest over a one - to four -year period. The Company recognizes share-based compensation for equity awards granted to employees, officers, and directors as compensation and benefits expense on the consolidated statements of income. The fair value of stock options is estimated using a Black-Scholes valuation model on the date of grant. The fair value of restricted stock awards, restricted stock units, and deferred stock units is equal to the closing price of the Company’s stock on the date of grant. Share-based compensation is recognized over the requisite service period of the individual awards, which generally equals the vesting period. The Company recognizes share-based compensation for equity awards granted to advisors and financial institutions as commissions and advisory expense on the consolidated statements of income. The fair value of stock options and warrants is estimated using a Black-Scholes valuation model on the date of grant and is revalued at each reporting period. The fair value of restricted stock units is equal to the closing price of the Company’s stock on the date of grant and on the last day of each reporting period. Share-based compensation is recognized over the requisite service period of the individual awards, which generally equals the vesting period. The Company must also make assumptions regarding the number of stock options, warrants, restricted stock awards, restricted stock units, and deferred stock units that will be forfeited. The forfeiture assumption is ultimately adjusted to the actual forfeiture rate. Therefore, changes in the forfeiture assumptions do not impact the total amount of expense ultimately recognized over the vesting period. Rather, different forfeiture assumptions would only impact the timing of expense recognition over the vesting period. See Note 14 . Share-Based Compensation , for additional information regarding share-based compensation for equity awards granted. Earnings Per Share Basic earnings per share is computed by dividing net income available to common shareholders by the basic 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. Income Taxes In preparing the consolidated financial statements, the Company estimates income tax expense based on various jurisdictions where it conducts business. The Company then must assess the likelihood that the deferred tax assets will be realized. A valuation allowance is established to the extent that it is more-likely-than-not that such deferred tax assets will not be realized. When the Company establishes a valuation allowance or modifies the existing allowance in a certain reporting period, it generally records a corresponding increase or decrease to tax expense in the consolidated statements of income. Management makes significant judgments in determining the provision for income taxes, the deferred tax assets and liabilities, and any valuation allowances recorded against the deferred tax asset. Changes in the estimate of these taxes occur periodically due to changes in the tax rates, changes in the business operations, implementation of tax planning strategies, resolution with taxing authorities of issues where the Company had previously taken certain tax positions, and newly enacted statutory, judicial, and regulatory guidance. These changes could have a material effect on the Company’s consolidated statements of income, financial condition, or cash flows in the period or periods in which they occur. Income tax credits are accounted for using the flow-through method as a reduction of income tax in the years utilized. The Company recognizes the tax effects of a position in the consolidated financial statements only if it is more-likely-than-not to be sustained based solely on its technical merits; otherwise no benefits of the position are to be recognized. The more-likely-than-not threshold must continue to be met in each reporting period to support continued recognition of a benefit. Moreover, each tax position meeting the recognition threshold is required to be measured as the largest amount that is greater than 50 percent likely to be realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. Cash and Cash Equivalents Cash equivalents are highly liquid investments with an original maturity of 90 days or less that are not required to be segregated under federal or other regulations. The Company's cash and cash equivalents are composed of interest and noninterest-bearing deposits, money market funds, and United States government obligations. Cash and Securities Segregated Under Federal and Other Regulations The Company's subsidiary, LPL Financial LLC, is subject to requirements related to maintaining cash or qualified securities in a segregated reserve account for the exclusive benefit of its customers in accordance with Rule 15c3-3 of the Security Exchange Act of 1934, as amended, and other regulations. Held within this account is approximately $100,000 for the proprietary accounts of introducing brokers. Restricted Cash Restricted cash primarily represents cash held by and for use by the Company’s captive insurance subsidiary. Receivables From and Payables to Clients Receivables from clients include amounts due on cash and margin transactions. The Company extends credit to clients of its advisors to finance their purchases of securities on margin and receives income from interest charged on such extensions of credit. Payables to clients represent credit balances in client accounts arising from deposits of funds, proceeds from sales of securities, and dividend and interest payments received on securities held in client accounts at LPL Financial. At December 31, 2016 and 2015 , $836.6 million and $747.4 million , respectively, of the balance represent free credit balances that are held pending re-investment by the clients. The Company pays interest on certain client payable balances. To the extent that margin loans and other receivables from clients are not fully collateralized by client securities, management establishes an allowance that it believes is sufficient to cover any probable losses. When establishing this allowance, management considers a number of factors, including its ability to collect from the client or the client’s advisor and the Company’s historical experience in collecting on such transactions. The following schedule reflects the Company’s activity in providing for an allowance for uncollectible amounts due from clients (in thousands): December 31, 2016 2015 Beginning balance — January 1 $ 1,464 $ 1,245 Provision for doubtful accounts 116 219 Ending balance — December 31 $ 1,580 $ 1,464 Advisor Loans The Company periodically extends credit to its advisors in the form of recruiting loans, commission advances, and other loans. The decisions to extend credit to advisors are generally based on the advisors’ credit history and their ability to generate future commissions. Certain loans made in connection with recruiting are forgivable over terms ranging from three to eight years provided that the advisor remains licensed through LPL Financial. At December 31, 2016 , $136.7 million of the advisor loan balance was forgivable. If an advisor terminates their arrangement with the Company prior to the forgivable loan term date or repayment of another loan, an allowance for uncollectible amounts is recorded using an analysis that takes into account the advisors’ registration status and the specific type of receivable. The aging thresholds and specific percentages used represent management’s best estimates of probable losses. Management monitors the adequacy of these estimates through periodic evaluations against actual trends experienced. The following schedule reflects the Company’s activity in providing for an allowance for uncollectible amounts for advisor loans (in thousands): December 31, 2016 2015 Beginning balance — January 1 $ 697 $ 697 Provision for doubtful accounts 1,155 — Ending balance — December 31 $ 1,852 $ 697 Receivables From Others Receivables from others primarily consist of accrued fees from product sponsors and amounts due from advisors. Management maintains an allowance for uncollectible amounts using an aging analysis that takes into account the specific type of receivable. The aging thresholds and specific percentages used represent management’s best estimates of probable losses. Management monitors the adequacy of these estimates through periodic evaluations against actual trends experienced. The following schedule reflects the Company’s activity in providing for an allowance for uncollectible amounts due from others (in thousands): December 31, 2016 2015 Beginning balance — January 1 $ 9,856 $ 8,379 Provision for doubtful accounts 2,786 2,322 Charge-offs, net of recoveries 209 (845 ) Ending balance — December 31 $ 12,851 $ 9,856 Securities Owned and Securities Sold, But Not Yet Purchased Securities owned and securities sold, but not yet purchased include trading and held-to-maturity securities. The Company generally classifies its investments in debt and equity instruments (including mutual funds, annuities, corporate bonds, government bonds, and municipal bonds) as trading securities, except for United States government notes held by PTC, which are classified as held-to-maturity securities. The Company has not classified any investments as available-for-sale. Investment classifications are subject to ongoing review and can change. Securities classified as trading are carried at fair value, while securities classified as held-to-maturity are carried at amortized cost. 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 December 31, 2016 , the Company did not adjust prices received from the independent third-party pricing services. 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 Company makes estimates about the fair value of investments and the timing for recognizing losses based on market conditions and other factors. If these estimates change, the Company may recognize additional losses. Both unrealized and realized gains and losses on trading securities are recognized in other revenue on a net basis in the consolidated statements of income. Securities Borrowed The Company borrows securities from other broker-dealers to make deliveries or to facilitate customer short sales. Securities borrowed are accounted for as collateralized financings and are recorded at contract value, representing the amount of cash provided for securities borrowed transactions (generally in excess of market values). The adequacy of the collateral deposited, which is determined by comparing the market value of the securities borrowed to the cash loaned , is continuously monitored and is adjusted when considered necessary to minimize the risk associated with this activity. The Company borrows securities from other broker-dealers to make deliveries or to facilitate customer short sales. As of December 31, 2016 , the contract and collateral market values of borrowed securities were $5.6 million and $5.4 million , respectively. As of December 31, 2015 , the contract and collateral market values of borrowed securities were $6.0 million and $5.8 million , respectively. Fixed Assets Internally developed software, leasehold improvements, computers and software, and furniture and equipment are recorded at historical cost, net of accumulated depreciation and amortization. Depreciation is recognized using the straight-line method over the estimated useful lives of the assets. The Company charges software development costs to operations as incurred during the preliminary project stage, while capitalizing costs at the point at which the conceptual formulation, design, and testing of possible software project alternatives are complete and management authorizes and commits to funding the project. The costs of internally developed software that qualify for capitalization are capitalized as fixed assets and subsequently amortized over the estimated useful life of the software, which is generally three years. The Company does not capitalize pilot projects and projects for which it believes that the future economic benefits are less than probable. Leasehold improvements are amortized over the lesser of their useful lives or the terms of the underlying leases. Computers and software, as well as furniture and equipment, are depreciated over a period of three to seven years. Land is not depreciated. Management reviews fixed assets for impairment whenever events or changes in circumstances indicate the carrying amount of the assets may not be recoverable. No material impairment occurred for the years ended December 31, 2016 , 2015 , and 2014 . Goodwill and Other Intangible Assets Goodwill and other indefinite-lived assets are not amortized; however, intangible assets that are deemed to have definite lives are amortized over their useful lives, generally ranging from 5 - 20 years. See Note 7 . Goodwill and Other Intangible Assets , for additional information regarding the Company's goodwill and other intangible assets. Goodwill and other indefinite-lived intangible assets are tested annually for impairment in the fourth fiscal quarter and between annual tests if certain events occur indicating that the carrying amounts may be impaired. If a qualitative assessment is used and the Company determines that the fair value of a reporting unit or indefinite-lived intangible asset is more likely than not (i.e., a likelihood of more than 50%) less than its carrying amount, a quantitative impairment test will be performed. If goodwill or other indefinite-lived assets are quantitatively assessed for impairment, a two-step approach is applied. First, the Company compares the estimated fair value of the reporting unit in which the asset resides to its carrying value. The second step, if necessary, measures the amount of such impairment by comparing the implied fair value of the asset to its carrying value. No impairment of goodwill or other indefinite-lived intangible assets was recognized during the years ended December 31, 2016 , 2015 , or 2014 . Long-lived assets, such as intangible assets subject to amortization, are reviewed for impairment when there is evidence that events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. Recoverability of assets to be held and used is measured by comparing the carrying amount of an asset or asset group to estimated undiscounted future cash flows expected to be generated by the asset or asset group. If the carrying amount of an asset or asset group exceeds its estimated future cash flows, an impairment charge is recognized for the amount by which the carrying amount of the asset or asset group exceeds the estimated fair value of the asset or asset group. Long-lived assets to be disposed of by sale are reported at the lower of their carrying amounts or their estimated fair values less costs to sell and are not depreciated. There was No material impairment of definite-lived intangible assets recognized during the years ended December 31, 2016 , 2015 , and 2014 , respectively. Debt Issuance Costs Debt issuance and amendment costs have been capitalized and are being amortized as additional interest expense over the expected terms of the related debt agreements. Debt issuance costs are presented as a direct deduction from the carrying amount of the related debt liability. Costs incurred while obtaining the revolving credit facility are included in other assets and subsequently amortized ratably over the term of the revolving credit facility, regardless of whether there are any outstanding borrowings on the revolving credit facility. Derivative Financial Instruments The Company uses derivative financial instruments, primarily consisting of non-deliverable foreign currency forward contracts, to mitigate foreign currency exchange rate risk related to operating expenses that are subject to repricing. The Company has designated these derivative financial instruments as cash flow hedges, all of which qualify for hedge accounting. The Company assesses the ongoing effectiveness of its cash flow hedges. Changes in the fair value for the effective portion of the Company's cash flow hedges are presented in other comprehensive income and reclassified into earnings to match the timing of the underlying hedged item. Hedge ineffectiveness is measured at the end of each fiscal quarter, with any gains or losses realized into earnings in the current period. See Note 8 . Derivative Financial Instruments , for additional information regarding the Company's derivative 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, which are carried 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 3 . Fair Value Measurements , for additional information regarding the Company's fair value measurements. As of December 31, 2016 , the carrying amount and fair value of the Company’s indebtedness was approximately $2,197.4 million and $2,218.9 million , respectively. As of December 31, 2015 , the carrying amount and fair value was approximately $2,215.0 million and $2,200.0 million , respectively. Commitments and Contingencies The Company recognizes a liability with regard to loss contingencies when it believes it is probable a liability has occurred and the amount can be reasonably estimated. If some amount within a range of loss appears at the time to be a better estimate than any other amount within the range, the Company accrues that amount. When no amount within the range is a better estimate than any other amount, however, the Company accrues the minimum amount in the range. 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, except as otherwise covered by third-party insurance or self-insurance through the Company's Captive Insurance subsidiary. Leasehold Financing Obligation The Company was involved in a build-to-suit lease arrangement in Fort Mill, South Carolina, under which it served as the construction agent on behalf of the landlord and bore substantially all of the risks and rewards of ownership as measured under GAAP. The Company were therefore required to report the landlord's costs of construction as a fixed asset during the construction period as if the Company owned such asset and an equal and off-setting leasehold financing obligation on our consolidated statements of financial condition. The construction was completed in October 2016 and it was determined that the asset did not qualify for sale-leaseback accounting treatment. As such, the Company account for this arrangement as a capital lease in which the asset is depreciated and the lease payments are recognized as a reduction of the financing obligation and interest expense over the lease term on our consolidated statements of income. Recently Issued Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update("ASU") 2014-09, Revenue from Contracts with Customers: Topic 606 , to supersede nearly all existing revenue recognition guidance under GAAP. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date , which deferred the effective date for implementation of ASU 2014-09 by one year and is now effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted but not earlier than the original effective date. The Company expects to adopt the provisions of this guidance on January 1, 2018 using the modified retrospective approach; however, the adoption is expected to have no material impact on its consolidated financial statements but will impact the Company's disclosures. In February 2016, the FASB issued ASU 2016-02, Leases , which establishes a right-of-use model that requires a lessee to record a right-of-use asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the statement of operations. The Company expects to adopt the provisions of this guidance on January 1, 2019. The Company is currently evaluating the impact that ASU 2016-02 will have on its consolidated financial |