Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 23, 2021	Sep. 17, 2021	Aug. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) on sale of mortgage loans held-for-sale	$ (18.0)	$ 86.4	$ 97.7
Unpaid principal balance	$ 232.7	$ 276.9
$300 million 3.850% senior notes due January 2030, net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate (percent)	3.85%	3.85%		5.50%	5.50%	5.50%
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	$ 142.9	$ 157.7
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	$ 86.6	$ 124.9