Accumulated Other Comprehensive Income (Loss) - Changes in AOCI (Detail) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||||
| Balance | $ 57,840 | $ 49,306 | $ 56,115 | $ 47,664 | ||
| Foreign currency translation adjustments | [1] | (27) | (43) | (138) | 620 | |
| Balance Ending | 63,925 | 55,735 | 63,925 | 55,735 | ||
| Accumulated Other Comprehensive Income (Loss) [Member] | ||||||
| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||||
| Balance | (653) | (515) | (545) | (1,178) | ||
| Foreign currency translation adjustments | (27) | (43) | (138) | 620 | ||
| Change in BlackRock, Inc.'s ownership interest | (0) | 0 | 3 | 0 | ||
| Balance Ending | $ (680) | $ (558) | $ (680) | $ (558) | ||
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in accumulated other comprehensive income. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of equity (deficit) attributable to parent and noncontrolling interest. Excludes temporary equity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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