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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Class of Stock [Line Items] |  |  |
Stock Repurchase Program, Authorized Amount |  | $ 4,000.0 |
Treasury Stock, Shares, Acquired |  | 6,800,000 |
Payments for Repurchase of Common Stock |  | $ 1,100.0 |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  | $ 2,500.0 |
Cash dividends paid per common share (in dollars per share) |  | $ 0.40 |
Divedends declared (in dollars per sh |  | $ 0.40 | $ 0.30
Cash dividends declared |  | $ (128.5) | $ (99.9)
Retained Earnings [Member] |  |  |
Class of Stock [Line Items] |  |  |
Cash dividends declared |  | (128.5) | $ (99.9)
Subsequent Event [Member] |  |  |
Class of Stock [Line Items] |  |  |
Divedends declared (in dollars per sh | $ 0.40 |  |
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 |  | $ 300.0 |
At-the-market Equity Offering Program, Common Stock Issued |  | 0 |
Common Stock Available for Issuance, Value Remaining |  | $ 750.0 |

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