Consolidated Sponsored Investment Products - Consolidated VIEs And VREs Recorded in Consolidated Statements of Financial Condition (Detail) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Consolidated Sponsored Investment Funds [Line Items] | ||||||||||
| Cash and cash equivalents | [1] | $ 12,877 | $ 11,468 | |||||||
| Investments: | ||||||||||
| Trading securities | [2] | 3,330 | 2,789 | |||||||
| Equity securities at FVTNI | [2] | 3,181 | 2,282 | |||||||
| Total investments | [1] | 15,384 | 13,271 | |||||||
| Other assets | [1] | 7,861 | 5,700 | |||||||
| Other liabilities | [1] | (9,075) | (6,823) | |||||||
| Consolidated Variable Interest Entities [Member] | ||||||||||
| Consolidated Sponsored Investment Funds [Line Items] | ||||||||||
| Cash and cash equivalents | [3] | 306 | 428 | |||||||
| Investments: | ||||||||||
| Trading securities | 2,310 | 2,350 | ||||||||
| Equity securities at FVTNI | 1,968 | 1,537 | ||||||||
| Other investments | 1,184 | 946 | ||||||||
| Carried interest | 3,637 | 3,654 | ||||||||
| Total investments | 9,099 | 8,487 | ||||||||
| Other assets | 63 | 76 | ||||||||
| Other liabilities | [4] | (3,769) | (4,052) | |||||||
| Noncontrolling interests - CIPs | (3,756) | (2,521) | ||||||||
| BlackRock's net interests in CIPs | 1,943 | 2,418 | ||||||||
| Consolidated Voting Rights Entities [Member] | ||||||||||
| Consolidated Sponsored Investment Funds [Line Items] | ||||||||||
| Cash and cash equivalents | [3] | 481 | 33 | |||||||
| Investments: | ||||||||||
| Trading securities | 1,020 | 432 | ||||||||
| Equity securities at FVTNI | 232 | 144 | ||||||||
| Other investments | 81 | 68 | ||||||||
| Carried interest | 0 | 0 | ||||||||
| Total investments | 1,333 | 644 | ||||||||
| Other assets | 20 | 111 | ||||||||
| Other liabilities | [4] | (929) | (60) | |||||||
| Noncontrolling interests - CIPs | (351) | (236) | ||||||||
| BlackRock's net interests in CIPs | 554 | 492 | ||||||||
| Consolidated Sponsored Investment Products [Member] | ||||||||||
| Consolidated Sponsored Investment Funds [Line Items] | ||||||||||
| Cash and cash equivalents | [3] | 787 | 461 | |||||||
| Investments: | ||||||||||
| Trading securities | 3,330 | 2,782 | ||||||||
| Equity securities at FVTNI | 2,200 | 1,681 | ||||||||
| Other investments | 1,265 | 1,014 | ||||||||
| Carried interest | 3,637 | 3,654 | ||||||||
| Total investments | 10,432 | 9,131 | ||||||||
| Other assets | 83 | 187 | ||||||||
| Other liabilities | [4] | (4,698) | (4,112) | |||||||
| Noncontrolling interests - CIPs | (4,107) | (2,757) | ||||||||
| BlackRock's net interests in CIPs | $ 2,497 | $ 2,910 | ||||||||
| ||||||||||
| X | ||||||||||
- Definition Carried Interest distributions received subject to clawback.. No definition available.
|
| X | ||||||||||
- Definition Consolidated sponsored investment funds. No definition available.
|
| X | ||||||||||
- Definition Economic interests in consolidated investment products. No definition available.
|
| X | ||||||||||
- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Sum of the carrying amounts as of the balance sheet date of all investments. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of equity (deficit) attributable to noncontrolling interest. Excludes temporary equity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of assets classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of investments classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of liabilities classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|