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Stockholders' Equity and Noncontrolling Interest - Ownership Interest (Details) - shares	Dec. 31, 2025	Dec. 31, 2024
LLC Units
Interest in Baldwin Holdings held by Baldwin (in shares)	71,779,608	67,979,419
Noncontrolling interest in Baldwin Holdings held by Baldwin Holdings’ LLC Members (in shares)	46,703,818	49,552,686
Total (in shares)	118,483,426	117,532,105
Percentage
Total	100.00%	100.00%
Baldwin
Percentage
Interest in Baldwin Holdings held by Baldwin	61.00%	58.00%
Baldwin Holdings' LLC Members
Percentage
Noncontrolling interest in Baldwin Holdings held by Baldwin Holdings’ LLC Members	39.00%	42.00%

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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