v3.3.1.900

Deferred Revenue and Acquisition Related Liabilities, net (Details) - USD ($)
$ in Thousands

Dec. 31, 2015

Dec. 31, 2014

Deferred Revenue Arrangement [Line Items]

Acquisition-related intangible liabilities, net

^[1]

$ 32,324

$ 43,427

Deferred revenue and acquisition-related intangible liabilities, net

128,156

132,239

Tenant Funded Tenant Improvements [Member]

Deferred Revenue Arrangement [Line Items]

Deferred Revenue

^[2]

90,825

85,757

Other Deferred Revenue [Member]

Deferred Revenue Arrangement [Line Items]

Deferred Revenue

$ 5,007

$ 3,055

[1]	See Note 2 “Basis of Presentation and Significant Accounting Policies” and Note 5 “Deferred Leasing Costs and Acquisition-related Intangible Assets and Liabilities, net” for additional information.
[2]	Excludes deferred revenue related to tenant-funded tenant improvements related to properties held for sale at

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

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

X

- Definition

This element represents the (1) amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP; and (2) the liability associated with the acquisition of an off-market leases when the terms of the lease are unfavorable to the market terms for the lease at the date of acquisition.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response)
-URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 13
-Section A

+ Details

Name:	us-gaap_DeferredRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DeferredRevenueArrangementLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DeferredRevenueArrangementTypeAxis=krc_TenantFundedTenantImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DeferredRevenueArrangementTypeAxis=krc_OtherDeferredRevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: