Organization and Description of the Company	6 Months Ended
Organization and Description of the Company	Jun. 30, 2021
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. 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 objective financial advice and brokerage services to retail investors (their “clients”). The Company’s most significant, wholly owned subsidiaries are described below: •LPL Holdings, Inc. (“LPLH” or “Parent”), a Massachusetts holding corporation, is an intermediate holding company and directly or indirectly owns 100% of the issued and outstanding common stock of all of LPLFH’s indirect subsidiaries, including a captive insurance subsidiary (the “Captive Insurance Subsidiary”) that underwrites insurance for various legal and regulatory risks of the Company. •LPL Financial LLC (“LPL Financial”), with primary offices in San Diego, California; Fort Mill, South Carolina; Boston, Massachusetts; and Austin, Texas, is a clearing broker-dealer and an investment adviser that principally transacts business as an agent for its advisors and financial institutions on behalf of their clients in a broad array of financial products and services. LPL Financial is licensed to operate in all 50 states, Washington D.C., Puerto Rico and the U.S. Virgin Islands. •Fortigent Holdings Company, Inc. and its subsidiaries provide solutions and consulting services to registered investment advisers (“RIAs”), banks and trust companies serving high-net-worth clients. •LPL Insurance Associates, Inc. operates as an insurance brokerage general agency that offers life and disability insurance products and services for LPL Financial advisors. •AW Subsidiary, Inc. is a holding company for AdvisoryWorld and Blaze Portfolio Systems LLC (“Blaze”). AdvisoryWorld offers technology products, including proposal generation, investment analytics and portfolio modeling, to both the Company’s advisors and external clients in the wealth management industry. Blaze offers a trading and rebalancing platform to both the Company’s advisors and external clients. •PTC Holdings, Inc. (“PTCH”) is a holding company for The Private Trust Company, N.A. (“PTC”). PTC is chartered as a non-depository limited purpose national bank, providing a wide range of trust, investment management oversight, and custodial services for estates and families. PTC also provides Individual Retirement Account (“IRA”) custodial services for LPL Financial. Each member of PTCH’s Board of Directors meets the direct equity ownership interest requirements that are required by the Office of the Comptroller of the Currency. •LPL Employee Services, LLC is a holding company for Allen & Company of Florida, LLC (“Allen & Company”), an RIA. •Waddell & Reed Financial Services, LLC and its subsidiaries provide investment management and wealth management services to clients.