Income per Unit (Tables)

3 Months Ended

Mar. 31, 2017

Class of Stock [Line Items]

Summary of Basic and Diluted Earnings Per Share

The following is a summary of basic and diluted income per share (in thousands, except share and per share amounts):

	Three Months Ended March 31,
	2017		2016
Net income available to common stockholders	$	66,145	$	39,125
Weighted average shares outstanding—basic	159,297,027		146,565,564
Potentially dilutive common shares:
Stock options	4		11,286
Unvested incentive units	237,336		122,601
Forward equity offering	283,388		—
Market performance-based awards	603,900		733,743
Weighted average shares outstanding—diluted	160,421,655		147,433,194
Income per share:
Basic	$	0.42	$	0.27
Diluted	$	0.41	$	0.27

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive:

	Three Months Ended March 31,
	2017	2016
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.	2,177,874	2,482,234
Potentially dilutive Series E Cumulative Redeemable Preferred Stock	—	3,345,087
Potentially dilutive Series F Cumulative Redeemable Preferred Stock	1,783,083	2,121,447
Potentially dilutive Series G Cumulative Redeemable Preferred Stock	2,438,074	2,900,732
Potentially dilutive Series H Cumulative Redeemable Preferred Stock	3,572,744	4,250,720
Potentially dilutive Series I Cumulative Redeemable Preferred Stock	2,440,928	2,904,126
Total	12,412,703	18,004,346

Digital Realty Trust, L.P.

Class of Stock [Line Items]

Summary of Basic and Diluted Earnings Per Share

The following is a summary of basic and diluted income per unit (in thousands, except unit and per unit amounts):

	Three Months Ended March 31,
	2017		2016
Net income available to common unitholders	$	67,049	$	39,788
Weighted average units outstanding—basic	161,474,901		149,047,798
Potentially dilutive common units:
Stock options	4		11,286
Unvested incentive units	237,336		122,601
Forward equity offering	283,388		—
Market performance-based awards	603,900		733,743
Weighted average units outstanding—diluted	162,599,529		149,915,428
Income per unit:
Basic	$	0.42	$	0.27
Diluted	$	0.41	$	0.27

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive:

	Three Months Ended March 31,
	2017	2016
Potentially dilutive Series E Cumulative Redeemable Preferred Units	—	3,345,087
Potentially dilutive Series F Cumulative Redeemable Preferred Units	1,783,083	2,121,447
Potentially dilutive Series G Cumulative Redeemable Preferred Units	2,438,074	2,900,732
Potentially dilutive Series H Cumulative Redeemable Preferred Units	3,572,744	4,250,720
Potentially dilutive Series I Cumulative Redeemable Preferred Units	2,440,928	2,904,126
Total	10,234,829	15,522,112