CONSOLIDATED BALANCE SHEETS (KILROY REALTY, L.P.) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
REAL ESTATE ASSETS:
Land and improvements	$ 1,738,242	$ 1,738,242
Buildings and improvements	8,335,285	8,302,081
Undeveloped land and construction in progress	1,788,542	1,691,860
Total real estate assets held for investment	11,862,069	11,732,183
Accumulated depreciation and amortization	(2,294,202)	(2,218,710)
Total real estate assets held for investment, net	9,567,867	9,513,473
CASH AND CASH EQUIVALENTS	476,358	347,379
MARKETABLE SECURITIES (Note 7)	23,288	23,547
CURRENT RECEIVABLES, NET	15,926	20,583
DEFERRED RENT RECEIVABLES, NET	457,870	452,200
DEFERRED LEASING COSTS AND ACQUISITION-RELATED INTANGIBLE ASSETS, NET	238,184	250,846
RIGHT OF USE GROUND LEASE ASSETS	126,277	126,530
PREPAID EXPENSES AND OTHER ASSETS, NET	63,622	62,429
TOTAL ASSETS	10,969,392	10,796,987
LIABILITIES:
Secured debt, net (Notes 2 and 7)	241,547	242,938
Unsecured debt, net (Notes 2 and 7)	4,171,029	4,020,058
Accounts payable, accrued expenses and other liabilities	418,902	392,360
Ground lease liabilities	124,837	124,994
Accrued dividends and distributions (Note 12)	64,461	64,285
Deferred revenue and acquisition-related intangible liabilities, net	195,629	195,959
Rents received in advance and tenant security deposits	80,565	81,432
Liabilities	5,296,970	5,122,026
COMMITMENTS AND CONTINGENCIES (Note 6)
CAPITAL:
TOTAL LIABILITIES AND EQUITY (CAPITAL)	10,969,392	10,796,987
Kilroy Realty L.P.
REAL ESTATE ASSETS:
Land and improvements	1,738,242	1,738,242
Buildings and improvements	8,335,285	8,302,081
Undeveloped land and construction in progress	1,788,542	1,691,860
Total real estate assets held for investment	11,862,069	11,732,183
Accumulated depreciation and amortization	(2,294,202)	(2,218,710)
Total real estate assets held for investment, net	9,567,867	9,513,473
CASH AND CASH EQUIVALENTS	476,358	347,379
MARKETABLE SECURITIES (Note 7)	23,288	23,547
CURRENT RECEIVABLES, NET	15,926	20,583
DEFERRED RENT RECEIVABLES, NET	457,870	452,200
DEFERRED LEASING COSTS AND ACQUISITION-RELATED INTANGIBLE ASSETS, NET	238,184	250,846
RIGHT OF USE GROUND LEASE ASSETS	126,277	126,530
PREPAID EXPENSES AND OTHER ASSETS, NET	63,622	62,429
TOTAL ASSETS	10,969,392	10,796,987
LIABILITIES:
Secured debt, net (Notes 2 and 7)	241,547	242,938
Unsecured debt, net (Notes 2 and 7)	4,171,029	4,020,058
Accounts payable, accrued expenses and other liabilities	418,902	392,360
Ground lease liabilities	124,837	124,994
Accrued dividends and distributions (Note 12)	64,461	64,285
Deferred revenue and acquisition-related intangible liabilities, net	195,629	195,959
Rents received in advance and tenant security deposits	80,565	81,432
Liabilities	5,296,970	5,122,026
COMMITMENTS AND CONTINGENCIES (Note 6)
CAPITAL:
Common units, 116,716,080 and 116,464,169 held by the general partner and 1,150,574 and 1,150,574 held by common limited partners issued and outstanding	5,487,038	5,490,571
Noncontrolling interests in consolidated property partnerships (Note 1)	185,384	184,390
Total capital	5,672,422	5,674,961
TOTAL LIABILITIES AND EQUITY (CAPITAL)	$ 10,969,392	$ 10,796,987
Kilroy Realty L.P. | Common Units
CAPITAL:
Common units outstanding held by common limited partners (in shares)	1,150,574	1,150,574
Revenue, Product and Service [Extensible List]	1,150,574	1,150,574