Earnings Per Common Share - Computation of EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator
Income (loss) from continuing operations	$ 61,305	$ (27,762)	$ 108,785	$ 179,711
Noncontrolling interests' share in continuing operations	(7,195)	(3,616)	(14,036)	(10,565)
Income (loss) from continuing operations attributable to Healthpeak Properties, Inc.	54,110	(31,378)	94,749	169,146
Less: Participating securities' share in continuing operations	(269)	(351)	(3,001)	(2,151)
Income (loss) from continuing operations applicable to common shares	53,841	(31,729)	91,748	166,995
Income (loss) from discontinued operations	601	(31,819)	384,569	98,297
Noncontrolling interests' share in discontinued operations	0	(220)	(2,539)	(274)
Net income (loss) applicable to common shares	$ 54,442	$ (63,768)	$ 473,778	$ 265,018
Denominator
Basic weighted average shares outstanding (in shares)	539,021,000	538,333,000	538,879,000	527,908,000
Dilutive potential common shares - equity awards (in shares)	367,000	0	280,000	279,000
Dilutive potential common shares - forward equity agreements (in shares)	0	0	0	268,000
Diluted weighted average common shares (in shares)	539,388,000	538,333,000	539,159,000	528,455,000
Basic earnings (loss) per common share
Continuing operations (in dollars per share)	$ 0.10	$ (0.06)	$ 0.17	$ 0.32
Discontinued operations (in dollars per share)	0.00	(0.06)	0.71	0.18
Net income (loss) applicable to common shares (in dollars per share)	0.10	(0.12)	0.88	0.50
Diluted earnings (loss) per common share
Continuing operations (in dollars per share)	0.10	(0.06)	0.17	0.32
Discontinued operations (in dollars per share)	0.00	(0.06)	0.71	0.18
Net income (loss) applicable to common shares (in dollars per share)	$ 0.10	$ (0.12)	$ 0.88	$ 0.50
Outstanding equity awards (in shares)	1,000,000	1,000,000	1,000,000	1,000,000
Forward sales agreements that have not been settled (in shares)	9,000,000		9,000,000
Forward sales agreements that have been settled (in shares)		0		32,000,000