Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
loss on sale of mortgage loans	$ (3.4)	$ (4.3)	$ (5.6)	$ (9.3)
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short term borrowings maturity period			30 days
Fair Value, Inputs, Level 2 | Under Commitment to Sell
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held-for-sale, net	48.0		$ 48.0		$ 142.9
Fair Value, Inputs, Level 2 | Not Under Commitment to Sell
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held-for-sale, net	$ 110.7		$ 110.7		$ 86.6