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Net Capital Requirements | 12 Months Ended
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Dec. 31, 2025
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] |
Net Capital Requirements | 21. Net Capital Requirements The Company is required to maintain net capital in certain regulated subsidiaries within a number of jurisdictions, which is partially maintained by retaining cash and cash equivalent investments in those subsidiaries or jurisdictions. As a result, such subsidiaries of the Company may be restricted in their ability to transfer cash between different jurisdictions and to their parents. Additionally, transfers of cash between international jurisdictions may have adverse tax consequences that could discourage such transfers. Bank Regulatory Requirements. BlackRock Institutional Trust Company, N.A. ("BTC") is a consolidated subsidiary of the Company that is chartered as a national bank whose operations are limited to trust and other fiduciary activities and is subject to regulatory capital requirements administered by the US Office of the Comptroller of the Currency ("OCC"). The OCC would be required to take certain actions and permitted to take certain actions in the event of BTC’s failure to meet minimum capital requirements that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Quantitative measures established by federal banking regulators to ensure capital adequacy require BTC to maintain a minimum Common Equity Tier 1 capital and Tier 1 leverage ratio, as well as Tier 1 and total risk-based capital ratios. Based on BTC’s calculations as of December 31, 2025 and 2024, it exceeded the applicable capital adequacy requirements.
|  | Actual |  |  | For Capital Adequacy Purposes |  |  | To Be Well Capitalized Under Prompt Corrective Action Provisions |
(in millions) |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
December 31, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital (to risk weighted assets) |  | $ | 851 |  |  |  | 114.6 | % |  | $ | 59 |  |  |  | 8.0 | % |  | $ | 74 |  |  |  | 10.0 | %
Common Equity Tier 1 capital (to risk weighted assets) |  | $ | 846 |  |  |  | 114.0 | % |  | $ | 33 |  |  |  | 4.5 | % |  | $ | 48 |  |  |  | 6.5 | %
Tier 1 capital (to risk weighted assets) |  | $ | 846 |  |  |  | 114.0 | % |  | $ | 45 |  |  |  | 6.0 | % |  | $ | 59 |  |  |  | 8.0 | %
Tier 1 capital (to average assets) |  | $ | 846 |  |  |  | 67.6 | % |  | $ | 50 |  |  |  | 4.0 | % |  | $ | 63 |  |  |  | 5.0 | %
December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital (to risk weighted assets) |  | $ | 961 |  |  |  | 153.2 | % |  | $ | 50 |  |  |  | 8.0 | % |  | $ | 63 |  |  |  | 10.0 | %
Common Equity Tier 1 capital (to risk weighted assets) |  | $ | 953 |  |  |  | 151.9 | % |  | $ | 28 |  |  |  | 4.5 | % |  | $ | 41 |  |  |  | 6.5 | %
Tier 1 capital (to risk weighted assets) |  | $ | 953 |  |  |  | 151.9 | % |  | $ | 38 |  |  |  | 6.0 | % |  | $ | 50 |  |  |  | 8.0 | %
Tier 1 capital (to average assets) |  | $ | 953 |  |  |  | 71.3 | % |  | $ | 53 |  |  |  | 4.0 | % |  | $ | 67 |  |  |  | 5.0 | %
Broker-dealers. BlackRock Investments, LLC and BlackRock Execution Services are registered broker-dealers and wholly owned subsidiaries of BlackRock that are subject to the Uniform Net Capital requirements under the Securities Exchange Act of 1934, which requires maintenance of certain minimum net capital levels. Capital Requirements. At December 31, 2025 and 2024, the Company was required to maintain approximately $2.2 billion and $1.8 billion, respectively, in net capital in certain regulated subsidiaries, including BTC, entities regulated by the Financial Conduct Authority and Prudential Regulation Authority in the UK, and the Company’s broker-dealers. The Company was in compliance with all applicable regulatory net capital requirements.

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