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Earnings per Common Share or Unit (Tables) | 6 Months Ended
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Jun. 30, 2023
Earnings per Common Share or Unit |
Summary of Basic and Diluted Earnings Per Share and Unit | The following is a summary of basic and diluted income per share/unit (in thousands, except per share/unit amounts): ​ Digital Realty Trust, Inc. Earnings per Common Share
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common stockholders | ​ | $ | 108,003 | ​ | $ | 53,246 | ​ | $ | 166,548 | ​ | $ | 116,346
Plus: Loss attributable to redeemable noncontrolling interest (1) | ​ | ​ | (4,499) | ​ | ​ | — | ​ | ​ | (6,819) | ​ | ​ | —
Net income available to common stockholders - diluted EPS | ​ | ​ | 112,502 | ​ | ​ | 53,246 | ​ | ​ | 173,367 | ​ | ​ | 116,346
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average shares outstanding—basic | ​ |  | 295,390 | ​ |  | 284,694 | ​ |  | 293,316 | ​ |  | 284,610
Potentially dilutive common shares: | ​ |  |  | ​ |  | ​ | ​ |  |  | ​ |  | ​
Unvested incentive units | ​ |  | 46 | ​ |  | 178 | ​ |  | 51 | ​ |  | 183
Unvested restricted stock | ​ | ​ | 6 | ​ | ​ | 49 | ​ | ​ | 6 | ​ | ​ | 62
Forward equity offering | ​ | ​ | 60 | ​ | ​ | — | ​ | ​ | 169 | ​ | ​ | —
Market performance-based awards | ​ |  | 102 | ​ |  | 189 | ​ |  | 51 | ​ |  | 125
Redeemable noncontrolling interest shares (1) | ​ | ​ | 11,215 | ​ | ​ | — | ​ | ​ | 10,859 | ​ | ​ | —
Weighted average shares outstanding—diluted | ​ |  | 306,819 | ​ |  | 285,110 | ​ |  | 304,452 | ​ |  | 284,980
Income per share: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Basic | ​ | $ | 0.37 | ​ | $ | 0.19 | ​ | $ | 0.57 | ​ | $ | 0.41
Diluted | ​ | $ | 0.37 | ​ | $ | 0.19 | ​ | $ | 0.57 | ​ | $ | 0.41
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Digital Realty Trust, L.P. Earnings per Unit ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common unitholders | ​ | $ | 110,503 | ​ | $ | 54,746 | ​ | $ | 170,548 | ​ | $ | 119,446
Plus: Loss attributable to redeemable noncontrolling interest (1) | ​ | ​ | (4,499) | ​ | ​ | — | ​ | ​ | (6,819) | ​ | ​ | —
Net income available to common unitholders - diluted EPS | ​ | ​ | 115,002 | ​ | ​ | 54,746 | ​ | ​ | 177,367 | ​ | ​ | 119,446
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average units outstanding—basic | ​ |  | 301,593 | ​ |  | 290,528 | ​ |  | 299,452 | ​ |  | 290,346
Potentially dilutive common units: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Unvested incentive units | ​ |  | 46 | ​ |  | 178 | ​ |  | 51 | ​ |  | 183
Unvested restricted units | ​ | ​ | 6 | ​ | ​ | 49 | ​ | ​ | 6 | ​ | ​ | 62
Forward equity offering | ​ | ​ | 60 | ​ | ​ | — | ​ | ​ | 169 | ​ | ​ | —
Market performance-based awards | ​ |  | 102 | ​ |  | 189 | ​ |  | 51 | ​ |  | 125
Redeemable noncontrolling interest shares (1) | ​ | ​ | 11,215 | ​ | ​ | — | ​ | ​ | 10,859 | ​ | ​ | —
Weighted average units outstanding—diluted | ​ |  | 313,022 | ​ |  | 290,944 | ​ |  | 310,588 | ​ |  | 290,716
Income per unit: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Basic | ​ | $ | 0.37 | ​ | $ | 0.19 | ​ | $ | 0.57 | ​ | $ | 0.41
Diluted | ​ | $ | 0.37 | ​ | $ | 0.19 | ​ | $ | 0.57 | ​ | $ | 0.41
(1) | Pursuant to the Put/Call Agreement with the Rollover Shareholders who remained after the Teraco Acquisition, the Rollover Shareholders have a put right on the Remaining Interest of Teraco that can be settled by the Company in Digital Realty Trust, Inc. shares, in cash, or a combination of cash and shares. Under U.S. GAAP, diluted earnings per share must be reflected in a manner that assumes such put right was exercised at the beginning of the respective periods and settled entirely in shares. The amounts shown represent the redemption value of the Remaining Interest of Teraco divided by Digital Realty Trust, Inc.’s average share price for the respective periods. The put right is exercisable by the Rollover Shareholders for a two-year period commencing on February 1, 2026.
Schedule of Antidilutive Securities Excluded from Calculations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022
Shares subject to Forward Equity Offering | ​ | — | ​ | 6,250 | ​ | — | ​ | 6,250
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc. |  | 6,202 |  | 5,834 |  | 6,136 |  | 5,735
Potentially dilutive Series J Cumulative Redeemable Preferred Stock |  | 1,896 |  | 1,536 |  | 2,013 |  | 1,494
Potentially dilutive Series K Cumulative Redeemable Preferred Stock | ​ | 1,994 | ​ | 1,615 | ​ | 2,116 | ​ | 1,571
Potentially dilutive Series L Cumulative Redeemable Preferred Stock | ​ | 3,271 | ​ | 2,649 | ​ | 3,471 | ​ | 2,577
Total |  | 13,363 |  | 17,884 |  | 13,736 |  | 17,627

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