Consolidated Statements of Operations (KILROY REALTY, L.P.) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
REVENUES:
Rental income	$ 90,219		$ 76,997
Tenant reimbursements	8,304		6,022
Other property income	887		754
Total revenues	99,410	[1]	83,773	[1]
EXPENSES:
Property expenses	17,535		17,509
Real estate taxes	8,389		7,890
Provision for bad debts	2		26
Ground leases	802		339
General and administrative expenses	8,767		6,560
Acquisition-related expenses	1,528		472
Depreciation and amortization	36,746		28,441
Total expenses	73,769		61,237
OTHER (EXPENSES) INCOME:
Interest income and other net investment gains (Note 12)	484		184
Interest expense (Note 5)	(21,163)		(20,876)
Total other (expenses) income	(20,679)		(20,692)
INCOME FROM CONTINUING OPERATIONS	4,962		1,844
DISCONTINUED OPERATIONS (Note 14)
Income from discontinued operations	900		3,023
Net gain on dispositions of discontinued operations	72,809		0
Total income from discontinued operations	73,709	[2]	3,023	[2],[3]
NET INCOME	78,671		4,867
NET INCOME ATTRIBUTABLE TO KILROY REALTY, L.P.	76,876		4,833
Preferred distributions (Note 9)	(4,418)		(3,799)
Original issuance costs of preferred stock called for redemption (Note 9)	(4,918)		0
Total preferred distributions	(9,336)		(3,799)
NET INCOME AVAILABLE TO COMMON UNITHOLDERS	67,540		1,034
Loss from continuing operations available to common unitholders per common unit-basic (Note 16)	$ (0.07)		$ (0.04)
Loss from continuing operations available to common unitholders per common unit-diluted (Note 16)	$ (0.07)		$ (0.04)
Net income available to common unitholders per unit-basic (Note 16)	$ 1.06		$ 0.01
Net income available to common unitholders per unit-diluted (Note 16)	$ 1.06		$ 0.01
Weighted average common units outstanding - basic (Note 16)	63,648,704		52,302,075
Weighted average common units outstanding - diluted (Note 16)	63,648,704		52,302,075
Kilroy Realty, L.P. [Member]
REVENUES:
Rental income	90,219		76,997
Tenant reimbursements	8,304		6,022
Other property income	887		754
Total revenues	99,410		83,773
EXPENSES:
Property expenses	17,535		17,509
Real estate taxes	8,389		7,890
Provision for bad debts	2		26
Ground leases	802		339
General and administrative expenses	8,767		6,560
Acquisition-related expenses	1,528		472
Depreciation and amortization	36,746		28,441
Total expenses	73,769		61,237
OTHER (EXPENSES) INCOME:
Interest income and other net investment gains (Note 12)	484		184
Interest expense (Note 5)	(21,163)		(20,876)
Total other (expenses) income	(20,679)		(20,692)
INCOME FROM CONTINUING OPERATIONS	4,962		1,844
DISCONTINUED OPERATIONS (Note 14)
Income from discontinued operations	900		3,023
Net gain on dispositions of discontinued operations	72,809		0
Total income from discontinued operations	73,709		3,023
NET INCOME	78,671		4,867
Net income attributable to noncontrolling interests in consolidated subsidiaries	(53)		(34)
NET INCOME ATTRIBUTABLE TO KILROY REALTY, L.P.	78,618		4,833
Preferred distributions (Note 9)	(4,418)		(3,799)
Original issuance costs of preferred stock called for redemption (Note 9)	(4,918)		0
Total preferred distributions	(9,336)		(3,799)
NET INCOME AVAILABLE TO COMMON UNITHOLDERS	$ 69,282		$ 1,034
Loss from continuing operations available to common unitholders per common unit-basic (Note 16)	$ (0.07)		$ (0.04)
Loss from continuing operations available to common unitholders per common unit-diluted (Note 16)	$ (0.07)		$ (0.04)
Net income available to common unitholders per unit-basic (Note 16)	$ 1.05		$ 0.01
Net income available to common unitholders per unit-diluted (Note 16)	$ 1.05		$ 0.01
Weighted average common units outstanding - basic (Note 16)	65,366,835		54,025,206
Weighted average common units outstanding - diluted (Note 16)	65,366,835		54,025,206
Distributions declared per common unit	$ 0.35		$ 0.35

[1] All operating revenues are comprised of amounts received from third-party tenants.

[2] See Note 14 for the breakdown of income from discontinued operations by segment.

[3] Includes two office and one industrial buildings encompassing 282,611 rentable square feet that were disposed of in 2011.