Net Income Available to Common Stockholders Per Share of the Company (Details) - USD ($)
$ / shares in Units, $ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2015

Sep. 30, 2014

Sep. 30, 2015

Sep. 30, 2014

Numerator:

Income from continuing operations

$ 106,704

$ 13,168

$ 209,296

$ 39,896

(Income) Loss from continuing operations attributable to noncontrolling common units of the Operating Partnership

(1,945)

(193)

(3,850)

(635)

Preferred dividends

(3,313)

(9,938)

Allocation to participating securities

^[1]

(367)

(432)

(1,200)

(1,285)

Numerator for basic and diluted income from continuing operations available to common stockholders

101,079

9,230

194,308

28,038

Income from discontinued operations

^[2]

6,135

112,482

Income from discontinued operations attributable to noncontrolling common units of the Operating Partnership

^[2]

(128)

(2,376)

Numerator for basic and diluted net income available to common stockholders

$ 101,079

$ 15,237

$ 194,308

$ 138,144

Denominator:

Weighted average common shares outstanding – basic (Note 13)

92,150,341

83,161,323

89,077,012

82,525,033

Effect of dilutive securities

488,724

1,949,133

516,249

2,097,589

Weighted average common shares outstanding-diluted

92,639,065

85,110,456

89,593,261

84,622,622

Basic earnings per share:

Income (loss) from continuing operations available to common stockholders per common share – basic (Note 13)

$ 1.10

$ 0.11

$ 2.18

$ 0.34

Income from discontinued operations per common share

^[2]

0.00

0.07

0.00

1.33

Net income available to common stockholders per share-basic

1.10

0.18

2.18

1.67

Diluted earnings per share:

Income from continuing operations available to common stockholders per common share – diluted (Note 13)

1.09

0.11

2.17

0.33

Income from discontinued operations per common share

^[2]

0.00

0.07

0.00

1.30

Net income available to common stockholders per share-diluted

$ 1.09

$ 0.18

$ 2.17

$ 1.63

Kilroy Realty, L.P. [Member]

Numerator:

Income from continuing operations

$ 106,704

$ 13,168

$ 209,296

$ 39,896

(Income) Loss from continuing operations attributable to noncontrolling common units of the Operating Partnership

(64)

(59)

(211)

(188)

Preferred dividends

(3,313)

(9,938)

Allocation to participating securities

^[3]

(367)

(432)

(1,200)

(1,285)

Numerator for basic and diluted income from continuing operations available to common stockholders

102,960

9,364

197,947

28,485

Income from discontinued operations

^[4]

6,135

^[4]

112,482

^[4]

Income from discontinued operations attributable to noncontrolling common units of the Operating Partnership

^[4]

(13)

Numerator for basic and diluted net income available to common stockholders

$ 102,960

$ 15,499

$ 197,947

$ 140,954

Denominator:

Weighted average common shares outstanding – basic (Note 13)

93,938,783

84,965,523

90,869,696

84,329,317

Effect of dilutive securities

488,724

1,949,133

516,249

2,097,589

Weighted average common shares outstanding-diluted

94,427,507

86,914,656

91,385,945

86,426,906

Basic earnings per share:

Income (loss) from continuing operations available to common stockholders per common share – basic (Note 13)

$ 1.10

$ 0.11

$ 2.18

$ 0.34

Income from discontinued operations per common share

^[4]

0.00

0.07

0.00

1.33

Net income available to common stockholders per share-basic

1.10

0.18

2.18

1.67

Diluted earnings per share:

Income from continuing operations available to common stockholders per common share – diluted (Note 13)

1.09

0.11

2.17

0.33

Income from discontinued operations per common share

^[4]

0.00

0.07

0.00

1.30

Net income available to common stockholders per share-diluted

$ 1.09

$ 0.18

$ 2.17

$ 1.63

[1]	Participating securities include nonvested shares, certain time-based RSUs and vested market measure-based RSUs.
[2]	The Company adopted ASU 2014-08 effective January 1, 2015 (see Note 1). As a result, properties classified as held for sale and/or disposed of subsequent to January 1, 2015 that do not represent a strategic shift are no longer presented as discontinued operations.
[3]	Participating securities include nonvested shares, certain time-based RSUs and vested market measure-based RSUs.
[4]	The Company adopted ASU 2014-08 effective January 1, 2015 (see Note 1). As a result, properties classified as held for sale and/or disposed of subsequent to January 1, 2015 that do not represent a strategic shift are no longer presented as discontinued operations.

Kilroy Realty, L.P. 10-Q