Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
REVENUES:
Rental income	$ 574,413	$ 525,355	$ 466,328
Tenant reimbursements	61,079	53,774	46,717
Other property income	7,080	2,146	8,680
Total revenues	642,572	581,275	521,725
EXPENSES:
Property expenses	113,932	105,378	100,514
Real estate taxes	55,206	50,223	45,197
Provision for bad debts	0	545	58
Ground leases	3,439	3,096	3,075
General and administrative expenses	57,029	48,265	46,152
Acquisition-related expenses	1,902	497	1,479
Depreciation and amortization	217,234	204,294	202,417
Total expenses	448,742	412,298	398,892
OTHER (EXPENSES) INCOME:
Interest income and other net investment gains (losses)	1,764	243	561
Interest expense	(55,803)	(57,682)	(67,571)
Total other (expenses) income	(54,039)	(57,439)	(67,010)
INCOME FROM CONTINUING OPERATIONS BEFORE GAINS ON SALES OF REAL ESTATE	139,791	111,538	55,823
Net (loss) gain on sales of land	(295)	17,116	3,490
Gains on sales of depreciable operating properties	164,302	109,950	0
INCOME FROM CONTINUING OPERATIONS	303,798	238,604	59,313
DISCONTINUED OPERATIONS
Income from discontinued operations	0	0	2,573
Net gain on dispositions of discontinued operations	0	0	121,922
Total income from discontinued operations	0	0	124,495
NET INCOME	303,798	238,604	183,808
Net income attributable to noncontrolling common units of the Operating Partnership	(6,635)	(4,339)	(3,589)
Net income attributable to noncontrolling interests in consolidated property partnerships	3,375	184	0
Total income attributable to noncontrolling interests	(10,010)	(4,523)	(3,589)
NET INCOME ATTRIBUTABLE TO KILROY REALTY CORPORATION	293,788	234,081	180,219
PREFERRED DISTRIBUTIONS AND DIVIDENDS:
PREFERRED DIVIDENDS	(13,250)	(13,250)	(13,250)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 280,538	$ 220,831	$ 166,969
Income (loss) from continuing operations available to common stockholders per share (dollars per share)	$ 3.00	$ 2.44	$ 0.52
Income (loss) from continuing operations available to common stockholders per share (dollars per share)	2.97	2.42	0.51
Net income available to common stockholders per share-basic	3.00	2.44	1.99
Net income available to common stockholders per share-diluted	$ 2.97	$ 2.42	$ 1.95
Weighted average shares of common stock outstanding – basic	92,342,483	89,854,096	83,090,235
Weighted average shares of common stock outstanding – diluted	93,023,034	90,395,775	84,967,720