Consolidated Sponsored Investment Products - Consolidated VIEs And VREs Recorded in Consolidated Statements of Financial Condition (Detail) - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
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|---|---|---|---|---|---|---|---|---|---|---|
| Consolidated Sponsored Investment Funds [Line Items] | ||||||||||
| Cash and cash equivalents | [1] | $ 9,841 | $ 11,468 | |||||||
| Investments: | ||||||||||
| Trading securities | [2] | 3,304 | 2,789 | |||||||
| Equity securities at FVTNI | [2] | 2,612 | 2,282 | |||||||
| Total investments | [1] | 14,574 | 13,271 | |||||||
| Other assets | [1] | 9,132 | 5,700 | |||||||
| Other liabilities | [1] | (10,390) | (6,823) | |||||||
| Noncontrolling interests - CIPs | (217) | (227) | ||||||||
| Consolidated Variable Interest Entities [Member] | ||||||||||
| Consolidated Sponsored Investment Funds [Line Items] | ||||||||||
| Cash and cash equivalents | [3] | 238 | 428 | |||||||
| Investments: | ||||||||||
| Trading securities | 2,366 | 2,350 | ||||||||
| Equity securities at FVTNI | 1,813 | 1,537 | ||||||||
| Other investments | 1,325 | 946 | ||||||||
| Carried interest | 3,620 | 3,654 | ||||||||
| Total investments | 9,124 | 8,487 | ||||||||
| Other assets | 132 | 76 | ||||||||
| Other liabilities | [4] | (3,929) | (4,052) | |||||||
| Noncontrolling interests - CIPs | (3,419) | (2,521) | ||||||||
| BlackRock's net interests in CIPs | 2,146 | 2,418 | ||||||||
| Consolidated Voting Rights Entities [Member] | ||||||||||
| Consolidated Sponsored Investment Funds [Line Items] | ||||||||||
| Cash and cash equivalents | [3] | 175 | 33 | |||||||
| Investments: | ||||||||||
| Trading securities | 905 | 432 | ||||||||
| Equity securities at FVTNI | 334 | 144 | ||||||||
| Other investments | 39 | 68 | ||||||||
| Carried interest | 0 | 0 | ||||||||
| Total investments | 1,278 | 644 | ||||||||
| Other assets | 132 | 111 | ||||||||
| Other liabilities | [4] | (412) | (60) | |||||||
| Noncontrolling interests - CIPs | (319) | (236) | ||||||||
| BlackRock's net interests in CIPs | 854 | 492 | ||||||||
| Consolidated Sponsored Investment Products [Member] | ||||||||||
| Consolidated Sponsored Investment Funds [Line Items] | ||||||||||
| Cash and cash equivalents | [3] | 413 | 461 | |||||||
| Investments: | ||||||||||
| Trading securities | 3,271 | 2,782 | ||||||||
| Equity securities at FVTNI | 2,147 | 1,681 | ||||||||
| Other investments | 1,364 | 1,014 | ||||||||
| Carried interest | 3,620 | 3,654 | ||||||||
| Total investments | 10,402 | 9,131 | ||||||||
| Other assets | 264 | 187 | ||||||||
| Other liabilities | [4] | (4,341) | (4,112) | |||||||
| Noncontrolling interests - CIPs | (3,738) | (2,757) | ||||||||
| BlackRock's net interests in CIPs | $ 3,000 | $ 2,910 | ||||||||
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