v3.25.4

Subsequent Events (Details) $ / shares in Units, $ in Millions			12 Months Ended
	Jan. 09, 2026 USD ($) $ / shares shares	Jan. 07, 2026 $ / shares	Dec. 31, 2025 USD ($) shares	Dec. 31, 2024 USD ($) shares	Dec. 31, 2023 USD ($)	Mar. 31, 2026 USD ($)
Subsequent Event [Line Items]
Common stock, issued (in shares) \| shares			563,479,423	513,143,108
Anywhere merger transaction and integration expenses			$ 18.1	$ 0.0	$ 0.0
Subsequent Event
Subsequent Event [Line Items]
Capped call price (in dollars per share) \| $ / shares		$ 23.68
Premium reported sale price, percentage		100.00%
Payments for capped call transaction	$ 96.5
Subsequent Event \| Minimum
Subsequent Event [Line Items]
Restructuring and related cost, expected cost						$ 50.0
Subsequent Event \| Maximum
Subsequent Event [Line Items]
Restructuring and related cost, expected cost						$ 55.0
Subsequent Event \| Convertible Senior Notes Due 2031 \| Convertible Debt
Subsequent Event [Line Items]
Debt instrument, interest rate	0.25%
Aggregate principal amount	$ 1,000.0
Conversion ratio	0.0625626
Initial conversion price (in dollars per share) \| $ / shares	$ 15.98
Proceeds from convertible debt	$ 880.0
Debt issuance costs	$ 23.5
Class A common stock
Subsequent Event [Line Items]
Common stock, issued (in shares) \| shares			553,356,990	501,384,321
Anywhere Real Estate Inc.
Subsequent Event [Line Items]
Anywhere merger transaction and integration expenses			$ 18.1
Merger expenses paid			$ 6.3
Anywhere Real Estate Inc. \| Class A common stock \| Subsequent Event
Subsequent Event [Line Items]
Exchange ratio	1.436
Common stock, issued (in shares) \| shares	162,100,000

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Compass, Inc. 10-K