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Earnings Per Share - Narrative (Details) - $ / shares shares in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Jul. 26, 2020
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Antidilutive securities (in shares)	60.0	21.5
Convertible senior notes
Class of Stock [Line Items]
Antidilutive securities (in shares)	38.3	0.0
Ventas, Inc \| The Warrant
Class of Stock [Line Items]
Number of shares authorized to be purchased				16.3
Common stock, par value (in dollars per share)				$ 0.01
Share price (in dollars per share)				$ 3.00