Earnings Per Common Share - Computation of EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Numerator
Income (loss) from continuing operations	$ (120,585)	$ 147,132
Noncontrolling interests' share in continuing operations	(3,306)	(3,463)
Income (loss) from continuing operations attributable to Healthpeak Properties, Inc.	(123,891)	143,669
Less: Participating securities' share in continuing operations	(2,451)	(1,616)
Income (loss) from continuing operations applicable to common shares	(126,342)	142,053
Income (loss) from discontinued operations	270,008	135,408
Noncontrolling interests' share in discontinued operations	(329)	3
Net income (loss) applicable to common shares	143,337	277,464
Add: distributions on dilutive convertible units and other	0	2,515
Dilutive net income (loss) available to common shares	$ 143,337	$ 279,979
Denominator
Basic weighted average shares outstanding (in shares)	538,679,000	506,476,000
Dilutive potential common shares - equity awards (in shares)	0	318,000
Dilutive potential common shares - forward equity agreements (in shares)	0	808,000
Dilutive potential common shares - DownREIT conversions (in shares)	0	7,443,000
Diluted weighted average common shares (in shares)	538,679,000	515,045,000
Basic earnings (loss) per common share
Continuing operations (in dollars per share)	$ (0.23)	$ 0.28
Discontinued operations (in dollars per share)	0.50	0.27
Net income (loss) applicable to common shares (in dollars per share)	0.27	0.55
Diluted earnings (loss) per common share
Continuing operations (in dollars per share)	(0.23)	0.28
Discontinued operations (in dollars per share)	0.50	0.26
Net income (loss) applicable to common shares (in dollars per share)	$ 0.27	$ 0.54
Outstanding equity awards (in shares)	1,000,000	1,000,000
Forward sales agreements that have been settled (in shares)	0	32,000,000