Organization, Basis of Presentation and Summary of Significant Accounting Policies - Organization (Details)		9 Months Ended
	Jan. 21, 2021 vote event $ / shares shares	Sep. 30, 2022 shares	Dec. 31, 2021 shares	Sep. 30, 2021 shares	Jan. 20, 2021 shares
Common Class A
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of votes | vote	1
Common stock outstanding (in shares)	103,104,205	92,575,425	92,575,425
Conversion ratio		1
Number of trigger events | event	4
Common Class A | Minimum
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Share price (in usd per share) | $ / shares	$ 13.00
Common Class A | Maximum
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Share price (in usd per share) | $ / shares	$ 19.00
Common Class C
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of votes | vote	1
Common stock outstanding (in shares)	0	0	0
Common Class B
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of votes | vote	10
Common stock outstanding (in shares)	0	0	0	0
Exchange ratio (in shares)		1
Common Class D
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of votes | vote	10
Common stock outstanding (in shares)	1,502,069,787	1,502,069,787	1,502,069,787
UWM Holdings Corporation
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Ownership percent	94.00%
SFS Corp
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Ownership percent	6.00%
UWM
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of units authorized (in shares)					1
Number of units issued (in shares)					1
Number of units outstanding (in shares)					1
SFS Corp | UWM Holdings Corporation | Class B and Class D
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of earn-out shares to be issued	90,761,687