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Intangibles - Intangibles Lease Liabilities (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Intangibles [Abstract] |  |
Gross intangible lease liabilities | $ 208,031 | $ 194,565
Accumulated depreciation and amortization | (64,027) | (50,366)
Intangible liabilities, net | $ 144,004 | $ 144,199
Weighted average remaining amortization period in years | 8 years | 8 years

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- Definition Acquired Finite-Lived Intangible Liabilities, Weighted Average Useful Life + References No definition available. + Details
Name: | peak_AcquiredFiniteLivedIntangibleLiabilitiesWeightedAverageUsefulLife
Namespace Prefix: | peak_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Accumulated amount of amortization of liabilities, excluding financial liabilities, lacking physical substance with a finite life. + References No definition available. + Details
Name: | peak_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization
Namespace Prefix: | peak_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount before amortization of liabilities, excluding financial liabilities, lacking physical substance with a finite life. + References No definition available. + Details
Name: | peak_FiniteLivedIntangibleLiabilitiesGross
Namespace Prefix: | peak_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The aggregate sum of the gross carrying value of major finite-lived intangible liabilities class, less accumulated accretion and any impairment charges. + References No definition available. + Details
Name: | peak_FiniteLivedIntangibleLiabilitiesNet
Namespace Prefix: | peak_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Intangibles [Abstract] + References No definition available. + Details
Name: | peak_IntangiblesAbstract
Namespace Prefix: | peak_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration