Investment in AB (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Change in Equity Method Investment [Roll Forward] | ||||
| Beginning balance | $ 1,240,042 | |||
| Equity in net income attributable to AB Unitholders | $ 79,997 | $ 78,830 | 172,252 | $ 161,583 |
| Changes in accumulated other comprehensive (loss) | (133) | $ 9,779 | (2,065) | 22,550 |
| Cash distributions received (from) AB | (181,417) | (224,636) | ||
| Capital contributions (from) AB | (1,523) | $ (1,307) | ||
| AB Holding Units (retired) | (21,502) | |||
| AB Holding Units issued for long-term incentive compensation plans | 52,468 | |||
| Change in AB Holding Units held by AB for long-term incentive compensation plans | (12,107) | |||
| Ending balance | $ 1,246,148 | $ 1,246,148 | ||
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- Definition Change in Equity Method Investment [Roll Forward] No definition available.
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- Definition Partners' Capital Account, Treasury Units, Period Increase (Decrease) No definition available.
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of income (loss) for proportionate share of equity method investee's income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash inflow from an entity that is affiliated with the entity by means of direct or indirect ownership. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Dividends received on equity and other investments during the current period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Value, after forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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