Consolidated Statements of Operations (Unaudited) (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 noncontrolling common units of the Operating Partnership	(1,795)		(34)
NET INCOME ATTRIBUTABLE TO KILROY REALTY CORPORATION	76,876		4,833
PREFERRED DISTRIBUTIONS AND DIVIDENDS:
Distributions to noncontrolling cumulative redeemable preferred units of the Operating Partnership	(1,397)		(1,397)
Preferred dividends (Note 7)	(3,021)		(2,402)
Original issuance costs of preferred stock called for redemption (Note 7)	(4,918)		0
Total preferred distributions and dividends	(9,336)		(3,799)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 67,540		$ 1,034
Loss from continuing operations available to common stockholders per common share-basic (Note 15)	$ (0.07)		$ (0.04)
Loss from continuing operations available to common stockholders per common share-diluted (Note 15)	$ (0.07)		$ (0.04)
Net income available to common stockholders per share-basic (Note 15)	$ 1.06		$ 0.01
Net income available to common stockholders per share-diluted (Note 15)	$ 1.06		$ 0.01
Weighted average common shares outstanding-basic (Note 15)	63,648,704		52,302,075
Weighted average common shares outstanding-diluted (Note 15)	63,648,704		52,302,075
Dividends declared per common share	$ 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.