Segment Reporting - Direct-to-consumer Channel Volume (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest Rate Lock Commitment
Revenue, Major Customer [Line Items]
Direct-to-consumer	$ 663,848,000	$ 3,745,430,000	$ 5,539,862,000
Retail	2,036,658,000	3,414,638,000	3,399,174,000
Mortgage loan, sales volume	$ 2,700,506,000	$ 7,160,068,000	$ 8,939,036,000
Interest Rate Lock Commitment | Revenue Benchmark | Direct-to-consumer
Revenue, Major Customer [Line Items]
Volume/Sale % by line of business	24.60%	52.30%	62.00%
Interest Rate Lock Commitment | Revenue Benchmark | Retail
Revenue, Major Customer [Line Items]
Volume/Sale % by line of business	75.40%	47.70%	38.00%
Mortgage
Revenue, Major Customer [Line Items]
Direct-to-consumer	$ 1,031,810,000	$ 3,328,216,000	$ 3,751,813,000
Retail	1,958,849,000	2,873,861,000	2,483,336,000
Mortgage loan, sales volume	$ 2,990,659,000	$ 6,202,077,000	$ 6,235,149,000
Mortgage | Revenue Benchmark | Direct-to-consumer
Revenue, Major Customer [Line Items]
Volume/Sale % by line of business	34.50%	53.70%	60.20%
Mortgage | Revenue Benchmark | Retail
Revenue, Major Customer [Line Items]
Volume/Sale % by line of business	65.50%	46.30%	39.80%