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Stockholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Apr. 30, 2022	Oct. 31, 2021
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired		1.4
Payments for Repurchase of Common Stock		$ 118.1
Stock Repurchase Program, Remaining Authorized Repurchase Amount		$ 320.2
Divedends declared (in dollars per sh		$ 0.25	$ 0.225	$ 0.225	$ 0.225	$ 0.225
Cash dividends paid per common share (in dollars per share)		$ 0.25	$ 0.225	$ 0.225	$ 0.225	$ 0.225
Stock Repurchase Program, Authorized Amount							$ 1,000.0
Subsequent Event [Member]
Class of Stock [Line Items]
Divedends declared (in dollars per sh	$ 0.25
Forestar Group [Member]
Class of Stock [Line Items]
Equity Securities Registered, Value								$ 750.0
At-the-market Equity Offering Program, Common Stock Available for Issuance		$ 298.2						$ 300.0
Common Stock Available for Issuance, Value Remaining		$ 748.2

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