Income per Share (Tables)

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

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):

	Year Ended December 31,
	2018		2017		2016
Net income available to common stockholders	$	249,930	$	173,148	$	332,088
Weighted average shares outstanding—basic	206,035,408		174,059,386		149,953,662
Potentially dilutive common shares:
Stock options	—		—		9,726
Unvested incentive units	141,260		141,136		71,031
Forward equity offering	33,315		124,527		3,990
Market performance-based awards	463,488		570,049		641,279
Weighted average shares outstanding—diluted	206,673,471		174,895,098		150,679,688
Income per share:
Basic	$	1.21	$	0.99	$	2.21
Diluted	$	1.21	$	0.99	$	2.20

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:

	Year Ended December 31,
	2018	2017	2016
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.	8,227,463	3,996,550	2,406,018
Potentially dilutive Series C Cumulative Redeemable Perpetual Preferred Stock	1,876,584	540,773	—
Potentially dilutive Series E Cumulative Redeemable Preferred Stock	—	—	2,880,254
Potentially dilutive Series F Cumulative Redeemable Preferred Stock	—	463,301	1,939,905
Potentially dilutive Series G Cumulative Redeemable Preferred Stock	2,326,861	2,261,153	2,652,503
Potentially dilutive Series H Cumulative Redeemable Preferred Stock	3,409,772	3,313,484	3,886,966
Potentially dilutive Series I Cumulative Redeemable Preferred Stock	2,329,584	2,263,799	2,655,607
Potentially dilutive Series J Cumulative Redeemable Preferred Stock	1,858,622	720,803	—
	20,028,886	13,559,863	16,421,253