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Deferred Revenue and Acquisition-Related Intangible Liabilities, net - Deferred Revenue and Acquisition-Related Intangible Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Deferred revenue related to tenant-funded tenant improvements	$ 81,738	$ 97,802
Other deferred revenue	33,281	45,079
Acquisition-related intangible liabilities, net	27,418	30,757
Deferred revenue and acquisition-related intangible liabilities, net	$ 142,437	$ 173,638

X

- Definition

The identifiable intangible liability established upon acquisition based on an unfavorable difference between the terms of an acquired lease and the current market terms for that lease at the acquisition date and the ground lease obligation established upon acquisition based on an unfavorable difference between the terms of the acquired ground lease and the current market terms for that lease at the acquisition date.

+ References

No definition available.

+ Details

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Period Type:	instant

X

- Definition

Contract with Customer, Liability, Other

+ References

No definition available.

+ Details

Name:	krc_ContractwithCustomerLiabilityOther
Namespace Prefix:	krc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Deferred Revenue And Acquisition Related Intangible Liabilities

+ References

No definition available.

+ Details

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X

- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-8

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-2

+ Details

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X

- References

No definition available.

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