Earnings Per Share - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended
	Mar. 31, 2025	Dec. 31, 2022	Jun. 30, 2025	Dec. 31, 2024	Jul. 26, 2020
Class of Stock [Line Items]
Common stock, par value (in dollars per share)			$ 0.01	$ 0.01
Stock Purchase Contracts
Class of Stock [Line Items]
Number of shares issuable upon conversion (in shares)			1,500,000
Number of shares outstanding (in shares)	2,291,338
Common stock:
Class of Stock [Line Items]
Shares issued for settlement of prepaid stock purchase contracts (in shares)	29,636,386
Ventas, Inc | The Warrant
Class of Stock [Line Items]
Number of shares authorized to be purchased (in shares)					16,300,000
Common stock, par value (in dollars per share)					$ 0.01
Share price (in dollars per share)					$ 3.00
Shares issued for warrant exercise (in shares)			5,700,000
Class of warrant or right, exercised (in shares)			11,100,000
Incremental shares issuable upon certain events for 2026 Notes
Class of Stock [Line Items]
Number of shares issuable upon conversion (in shares)			3,900,000
Additional shares issuable (in shares)			1,000,000
2029 Notes at initial conversion rate
Class of Stock [Line Items]
Number of shares issuable upon conversion (in shares)			55,000,000
Additional shares issuable (in shares)			13,900,000
Incremental shares issuable upon certain events for 2026 Notes | Convertible Debt
Class of Stock [Line Items]
Debt face amount			$ 23.3
Interest rate, stated percentage			2.00%
2029 Notes at initial conversion rate | Convertible Debt
Class of Stock [Line Items]
Debt face amount			$ 369.4
Interest rate, stated percentage			3.50%
Tangible Equity Units Senior Amortizing Notes | Other notes payable
Class of Stock [Line Items]
Interest rate, stated percentage		7.00%
Number of shares issued (in shares)		2,875,000
Stated amount, per unit (in dollars per share)		$ 50.00
Aggregate offering		$ 143.8
Prepaid stock purchase contracts (in dollars per share)		$ 8.8996