v3.3.1.900
Consolidated Statements of Capital (KILROY REALTY, L.P.) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income $ 29,308 [1] $ 44,002 [1] $ 31,430 [1] $ 101,932 [1] $ 238,604 $ 183,808 $ 44,565
Stock Issued During Period, Value, New Issues         387,398 123,860 349,951
Noncontrolling Interest, Increase from Business Combination         474 977 4,885
Noncash amortization of share-based compensation         18,869 14,471 9,563
Preferred distributions         (13,250) (13,250) (13,250)
Stock Issued During Period, Value, in Connection with Early Exchange of Notes           223  
Stock Issued During Period, Value, Restricted Stock Award, Gross         (1) (1) 1
Noncontrolling Interest In Consolidated Subsidiaries [Member]              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income         4,523 3,589 685
Noncontrolling Interest, Increase from Business Combination         474 977 4,885
Kilroy Realty, L.P. [Member]              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning Balance   2,723,936   2,516,160 2,723,936 2,516,160 2,235,933
Net income 29,308 [2] 44,002 [2] 31,430 [2] 101,932 [2] 238,604 183,808 44,565
Issuance of common units (Note 11)         387,398 123,860 349,951
Noncontrolling Interest, Increase from Business Combination         474 977 4,885
Issuance of share-based compensation awards (Note 12)         1,692 1,692 1,448
Noncash amortization of share-based compensation         18,869 14,471 9,563
Repurchase of common units and restricted stock units (Note 12)         7,081 3,533 2,521
Preferred distributions         (13,250) (13,250) (13,250)
Distributions declared per common unit ($1.40 per unit)         (130,628) (121,563) (114,543)
Settlement of restricted stock units for shares of common stock         (1) (1)  
Stock Issued During Period, Value, in Connection with Early Exchange of Notes           $ 223  
Stock Received During Period, Call Options           0  
Stock Issued During Period, Value, Restricted Stock Award, Gross             1
Exercise of stock options         14,573 $ 21,092 128
Ending Balance 3,234,586   2,723,936   3,234,586 2,723,936 $ 2,516,160
Kilroy Realty, L.P. [Member] | Partners Capital Common Unit [Member]              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common units, units             7,210,838
Kilroy Realty, L.P. [Member] | Total Partners Capital [Member]              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning Balance   2,714,311   2,507,772 2,714,311 2,507,772 $ 2,232,654
Net income         238,137 183,548 44,341
Issuance of common units (Note 11)         387,398 123,860 349,951
Issuance of share-based compensation awards (Note 12)         1,692 1,692 1,448
Noncash amortization of share-based compensation         18,869 14,471 9,563
Repurchase of common units and restricted stock units (Note 12)         7,081 3,533 2,521
Preferred distributions         (13,250) (13,250) (13,250)
Distributions declared per common unit ($1.40 per unit)         (130,628) (121,563) (114,543)
Settlement of restricted stock units for shares of common stock         (1) (1)  
Stock Issued During Period, Value, in Connection with Early Exchange of Notes           $ 223  
Stock Received During Period, Call Options           0  
Stock Issued During Period, Value, Restricted Stock Award, Gross             1
Exercise of stock options           $ 21,092 128
Ending Balance 3,224,020   2,714,311   3,224,020 2,714,311 2,507,772
Kilroy Realty, L.P. [Member] | Partners Capital Preferred Units [Member]              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning Balance   192,411   192,411 192,411 192,411 192,411
Ending Balance 192,411   192,411   192,411 192,411 192,411
Kilroy Realty, L.P. [Member] | Partners Capital Common Unit [Member]              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning Balance   $ 2,521,900   $ 2,315,361 $ 2,521,900 $ 2,315,361 $ 2,040,243
Beginning Balance units   88,063,884   83,959,144 88,063,884 83,959,144 76,753,484
Net income         $ 238,137 $ 183,548 $ 44,341
Issuance of common units (Note 11)         $ 387,398 $ 123,860 349,951
Issuance of common units, units         5,640,033 1,950,599  
Issuance of share-based compensation awards (Note 12)         $ 1,692 $ 1,692 $ 1,448
Issuance of share-based compensation awards, units (Note 12)             0
Noncash amortization of share-based compensation         18,869 14,471 $ 9,563
Repurchase of common units and restricted stock units (Note 12)         $ 7,081 $ 3,533 $ 2,521
Stock Issued During Period, Shares, Restricted Stock Award, Gross             37,245
Repurchase of common units and restricted stock units, units (Note 12)         101,389 58,045 42,896
Preferred distributions         $ (13,250) $ (13,250) $ (13,250)
General Partners' Capital Account, Period Distribution Amount         $ 130,628 $ 121,563  
Distributions declared per common unit ($1.40 per unit)             (114,543)
Stock Issued During Period, Shares, in Connection with Early Exchange of Notes           2,091,323  
Stock Issued During Period, Value, in Connection with Early Exchange of Notes           $ 223  
Stock Received During Period, Call Options           515,342  
Settlement of restricted stock units for shares of common stock units         78,937 141,205  
Stock Issued During Period, Value, Restricted Stock Award, Gross         $ (1) $ (1) 1
Exercise of stock options         $ 14,573 $ 21,092 $ 128
Exercise of stock options, units         342,000 495,000 473
Ending Balance $ 3,031,609   $ 2,521,900   $ 3,031,609 $ 2,521,900 $ 2,315,361
Ending Balance units 94,023,465   88,063,884   94,023,465 88,063,884 83,959,144
Kilroy Realty, L.P. [Member] | Noncontrolling Interest In Consolidated Subsidiaries [Member]              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning Balance   $ 9,625   $ 8,388 $ 9,625 $ 8,388 $ 3,279
Net income         467 260 224
Noncontrolling Interest, Increase from Business Combination         474 977 4,885
Ending Balance $ 10,566   $ 9,625   $ 10,566 $ 9,625 $ 8,388
[1] The summation of the quarterly financial data may not equal the annual number reported on the consolidated statements of operations due to rounding. The summation of the quarterly net income (loss) available to common stockholders per share does not equal the annual number reported on the consolidated statements of operations due to the Company's public offerings of common stock and its at-the-market stock offering programs that occurred during the years ended December 31, 2015 and 2014.
[2] The summation of the quarterly financial data may not equal the annual number reported on the consolidated statements of operations due to rounding. The summation of the quarterly net income (loss) available to common unitholders per unit does not equal the annual number reported on the consolidated statements of operations due to the impact of the Company's public offerings of common stock and its at-the-market stock offering programs that occurred during the years ended December 31, 2015 and 2014.