Consolidated Balance Sheets (KILROY REALTY, L.P.) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
REAL ESTATE ASSETS:
Land and improvements	$ 1,108,971	$ 1,108,971
Buildings and improvements	4,983,638	4,938,250
Undeveloped land and construction in progress	1,183,618	1,013,533
Total real estate assets held for investment	7,276,227	7,060,754
Accumulated depreciation and amortization	(1,234,079)	(1,139,853)
Total real estate assets held for investment, net	6,042,148	5,920,901
REAL ESTATE ASSETS AND OTHER ASSETS HELD FOR SALE, NET	0	9,417
CASH AND CASH EQUIVALENTS	387,616	193,418
RESTRICTED CASH	8,249	56,711
MARKETABLE SECURITIES (Note 11)	16,010	14,773
CURRENT RECEIVABLES, NET (Note 3)	13,703	13,460
DEFERRED RENT RECEIVABLES, NET (Note 3)	233,427	218,977
DEFERRED LEASING COSTS AND ACQUISITION-RELATED INTANGIBLE ASSETS, NET	195,320	208,368
PREPAID EXPENSES AND OTHER ASSETS, NET (Note 4)	98,894	70,608
TOTAL ASSETS	6,995,367	6,706,633
LIABILITIES:
Secured debt, net (Notes 5 and 11)	467,758	472,772
Unsecured debt, net (Notes 5 and 11)	2,097,083	1,847,351
Accounts payable, accrued expenses and other liabilities	219,483	202,391
Accrued distributions (Note 16)	44,105	222,306
Deferred revenue and acquisition-related intangible liabilities, net	148,729	150,360
Rents received in advance and tenant security deposits	55,738	52,080
Liabilities of real estate assets held for sale	0	56
Total liabilities	3,032,896	2,947,316
COMMITMENTS AND CONTINGENCIES (Note 10)
Partners’ Capital (Note 8):
TOTAL LIABILITIES AND EQUITY (CAPITAL)	6,995,367	6,706,633
Kilroy Realty, L.P. [Member]
REAL ESTATE ASSETS:
Land and improvements	1,108,971	1,108,971
Buildings and improvements	4,983,638	4,938,250
Undeveloped land and construction in progress	1,183,618	1,013,533
Total real estate assets held for investment	7,276,227	7,060,754
Accumulated depreciation and amortization	(1,234,079)	(1,139,853)
Total real estate assets held for investment, net	6,042,148	5,920,901
REAL ESTATE ASSETS AND OTHER ASSETS HELD FOR SALE, NET	0	9,417
CASH AND CASH EQUIVALENTS	387,616	193,418
RESTRICTED CASH	8,249	56,711
MARKETABLE SECURITIES (Note 11)	16,010	14,773
CURRENT RECEIVABLES, NET (Note 3)	13,703	13,460
DEFERRED RENT RECEIVABLES, NET (Note 3)	233,427	218,977
DEFERRED LEASING COSTS AND ACQUISITION-RELATED INTANGIBLE ASSETS, NET	195,320	208,368
PREPAID EXPENSES AND OTHER ASSETS, NET (Note 4)	98,894	70,608
TOTAL ASSETS	6,995,367	6,706,633
LIABILITIES:
Secured debt, net (Notes 5 and 11)	467,758	472,772
Unsecured debt, net (Notes 5 and 11)	2,097,083	1,847,351
Accounts payable, accrued expenses and other liabilities	219,483	202,391
Accrued distributions (Note 16)	44,105	222,306
Deferred revenue and acquisition-related intangible liabilities, net	148,729	150,360
Rents received in advance and tenant security deposits	55,738	52,080
Liabilities of real estate assets held for sale	0	56
Total liabilities	3,032,896	2,947,316
COMMITMENTS AND CONTINGENCIES (Note 10)
Partners’ Capital (Note 8):
Common units, 98,351,217 and 93,219,439 held by the general partner and 2,077,193 and 2,381,543 held by common limited partners issued and outstanding, respectively	3,732,916	3,431,768
Total partners’ capital	3,829,172	3,624,179
Noncontrolling interests in consolidated property partnerships and subsidiaries (Note 1)	133,299	135,138
Total capital	3,962,471	3,759,317
TOTAL LIABILITIES AND EQUITY (CAPITAL)	6,995,367	6,706,633
Kilroy Realty, L.P. [Member] | Series G Cumulative Redeemable Preferred Units [Member]
Partners’ Capital (Note 8):
Cumulative Redeemable Preferred units	0	96,155
Kilroy Realty, L.P. [Member] | Series H Cumulative Redeemable Preferred Units [Member]
Partners’ Capital (Note 8):
Cumulative Redeemable Preferred units	$ 96,256	$ 96,256