Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Loans repurchased	$ 63.7	$ 58.6
Commitments to extend credit to potential borrowers	$ 36,600.0

Commitments to extend credit to potential borrowers.

No definition available.

Name:	uwmc_CommitmentsToExtendCreditToPotentialBorrowers
Namespace Prefix:	uwmc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant