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Net Income Per Unit (Tables) | 12 Months Ended
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Dec. 31, 2024
Earnings Per Share [Abstract] |
Net Income Per Unit |
| Years Ended December 31
| 2024 | 2023 | 2022
| (in thousands, except per unit amounts)
Net income - basic |  | $ | 423,374 |  |  | $ | 264,184 |  |  | $ | 274,165 |
Additional allocation of equity in net income attributable to AB resulting from assumed dilutive effect of compensatory options |  | — |  |  | — |  |  | 2 |
Net income - diluted |  | $ | 423,374 |  |  | $ | 264,184 |  |  | $ | 274,167 |
Weighted average units outstanding - basic |  | 114,125 |  |  | 112,948 |  |  | 101,763 |
Dilutive effect of compensatory options |  | — |  |  | — |  |  | 1 |
Weighted average units outstanding - diluted |  | 114,125 |  |  | 112,948 |  |  | 101,764 |
Basic net income per unit |  | $ | 3.71 |  |  | $ | 2.34 |  |  | $ | 2.69 |
Diluted net income per unit |  | $ | 3.71 |  |  | $ | 2.34 |  |  | $ | 2.69 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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