XML 91 R69.htm IDEA: XBRL DOCUMENT
v3.20.4

Acquisitions - Operating Property Acquisitions (Details) $ in Millions |  | 12 Months Ended
--- | --- | ---
Oct. 15, 2019 USD ($) ft² property | Dec. 31, 2020 ft² property | Dec. 31, 2019 USD ($) property
Schedule of Asset Acquisitions, by Acquisition [Line Items] |  |  |
Number of buildings acquired | property |  | 0 |
Rentable Square Feet (unaudited) | ft² |  | 14,620,166 |
Purchase price |  |  | $ 173.0
3101-3243 La Cienega Boulevard, Culver City, CA [Member] |  |  |
Schedule of Asset Acquisitions, by Acquisition [Line Items] |  |  |
Number of buildings acquired | property | 19 |  | 19
Rentable Square Feet (unaudited) | ft² | 151,908 |  |
Purchase price | $ 186.0 |  |
Revenue contributed from acquired properties |  |  | $ 3.7
Net income (loss) contributed from acquired properties |  |  | $ (0.1)

X
- Definition Asset Acquisition, Consideration Transferred + References No definition available. + Details
Name: | krc_AssetAcquisitionConsiderationTransferred
Namespace Prefix: | krc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Asset Acquisition, Pro Forma Information, Earnings or Loss of Acquiree Since Acquisition Date, Actual + References No definition available. + Details
Name: | krc_AssetAcquisitionProFormaInformationEarningsorLossofAcquireeSinceAcquisitionDateActual
Namespace Prefix: | krc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Asset Acquisition, Pro Forma Information, Revenue of Acquiree Since Acquisition Date, Actual + References No definition available. + Details
Name: | krc_AssetAcquisitionProFormaInformationRevenueofAcquireeSinceAcquisitionDateActual
Namespace Prefix: | krc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of Real Estate Properties Acquired + References No definition available. + Details
Name: | krc_NumberOfRealEstatePropertiesAcquired
Namespace Prefix: | krc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition [Line Items] for Schedule of Asset Acquisitions, by Acquisition [Table] + References No definition available. + Details
Name: | krc_ScheduleofAssetAcquisitionsbyAcquisitionLineItems
Namespace Prefix: | krc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net rentable area for properties owned. + References No definition available. + Details
Name: | us-gaap_NetRentableArea
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=krc_A31013243LaCienegaBoulevardCulverCityCAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |