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Escrow and Custodial Funds	12 Months Ended
	Dec. 31, 2025
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Escrow and Custodial Funds	Escrow and Custodial Funds In conjunction with the servicing of multifamily and commercial loans, Newmark holds escrow and other custodial funds. Escrow funds are held at unaffiliated financial institutions generally in the form of cash and cash equivalents. These funds amounted to $1.3 billion and $1.5 billion, as of December 31, 2025 and December 31, 2024, respectively. These funds are held for the benefit of Newmark’s borrowers and are segregated in custodial bank accounts. These amounts are excluded from the assets and liabilities of Newmark.

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