Income per Unit (Tables)

3 Months Ended

Mar. 31, 2019

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,
	2019		2018
Net income available to common stockholders	$	95,869	$	86,298
Weighted average shares outstanding—basic	207,809,383		205,714,173
Potentially dilutive common shares:
Unvested incentive units	323,064		302,016
Forward equity offering	221,448		—
Market performance-based awards	172,354		491,287
Weighted average shares outstanding—diluted	208,526,249		206,507,476
Income per share:
Basic	$	0.46	$	0.42
Diluted	$	0.46	$	0.42

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,
	2019	2018
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.	9,229,911	8,295,287
Potentially dilutive Series C Cumulative Redeemable Perpetual Preferred Stock	1,738,781	1,967,430
Potentially dilutive Series G Cumulative Redeemable Preferred Stock	2,155,992	2,439,505
Potentially dilutive Series H Cumulative Redeemable Preferred Stock	3,159,382	3,574,840
Potentially dilutive Series I Cumulative Redeemable Preferred Stock	2,158,515	2,442,359
Potentially dilutive Series J Cumulative Redeemable Preferred Stock	1,722,138	1,948,598
Potentially dilutive Series K Cumulative Redeemable Preferred Stock	358,008	—
Total	20,522,727	20,668,019

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,
	2019		2018
Net income available to common unitholders	$	100,169	$	89,778
Weighted average units outstanding—basic	217,039,295		214,009,460
Potentially dilutive common units:
Unvested incentive units	323,064		302,016
Forward equity offering	221,448		—
Market performance-based awards	172,354		491,287
Weighted average units outstanding—diluted	217,756,161		214,802,763
Income per unit:
Basic	$	0.46	$	0.42
Diluted	$	0.46	$	0.42

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,
	2019	2018
Potentially dilutive Series C Cumulative Redeemable Perpetual Preferred Units	1,738,781	1,967,430
Potentially dilutive Series G Cumulative Redeemable Preferred Units	2,155,992	2,439,505
Potentially dilutive Series H Cumulative Redeemable Preferred Units	3,159,382	3,574,840
Potentially dilutive Series I Cumulative Redeemable Preferred Units	2,158,515	2,442,359
Potentially dilutive Series J Cumulative Redeemable Preferred Units	1,722,138	1,948,598
Potentially dilutive Series K Cumulative Redeemable Preferred Units	358,008	—
Total	11,292,816	12,372,732