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Earnings per Common Share or Unit (Tables) | 12 Months Ended
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Dec. 31, 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 ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Year Ended December 31,
​ | 2023 |  | 2022 |  | 2021
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common stockholders | $ | 908,114 | ​ | $ | 336,960 | ​ | $ | 1,681,498
Plus: Loss attributable to redeemable noncontrolling interest (1) | ​ | (18,093) | ​ | ​ | 4,839 | ​ | ​ | —
Net income available to common stockholders - diluted EPS | ​ | 926,207 | ​ | ​ | 332,121 | ​ | ​ | 1,681,498
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average shares outstanding—basic |  | 298,603 | ​ |  | 286,334 | ​ |  | 282,475
Potentially dilutive common shares: |  |  | ​ |  |  | ​ |  |
Unvested incentive units |  | 118 | ​ |  | 257 | ​ |  | 253
Unvested restricted stock | ​ | 9 | ​ | ​ | 45 | ​ | ​ | 192
Forward equity offering | ​ | 248 | ​ | ​ | — | ​ | ​ | —
Market performance-based awards |  | 112 | ​ |  | 103 | ​ |  | 302
Redeemable noncontrolling interest shares (1) | ​ | 9,975 | ​ | ​ | 11,180 | ​ | ​ | —
Weighted average shares outstanding—diluted |  | 309,065 | ​ |  | 297,919 | ​ |  | 283,222
Income per share: |  |  | ​ |  |  | ​ |  |
Basic | $ | 3.04 | ​ | $ | 1.18 | ​ | $ | 5.95
Diluted | $ | 3.00 | ​ | $ | 1.11 | ​ | $ | 5.94
​ Digital Realty Trust, L.P. Earnings per Unit ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ |  | 2023 |  | 2022 |  | 2021
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common unitholders | ​ | $ | 928,824 | ​ | $ | 345,060 | ​ | $ | 1,720,598
Plus: Loss attributable to redeemable noncontrolling interest (1) | ​ | ​ | (18,093) | ​ | ​ | 4,839 | ​ | ​ | —
Net income available to common unitholders - diluted EPS | ​ | ​ | 946,917 | ​ | ​ | 340,221 | ​ | ​ | 1,720,598
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average units outstanding—basic | ​ |  | 304,651 | ​ |  | 292,123 | ​ |  | 289,165
Potentially dilutive common units: | ​ |  |  | ​ |  |  | ​ |  |
Unvested incentive units | ​ |  | 118 | ​ |  | 257 | ​ |  | 253
Unvested restricted units | ​ | ​ | 9 | ​ |  | 45 | ​ | ​ | 192
Forward equity offering | ​ | ​ | 248 | ​ |  | — | ​ | ​ | —
Market performance-based awards | ​ |  | 112 | ​ |  | 103 | ​ |  | 302
Redeemable noncontrolling interest shares (1) | ​ | ​ | 9,975 | ​ | ​ | 11,180 | ​ | ​ | —
Weighted average units outstanding—diluted | ​ |  | 315,113 | ​ |  | 303,708 | ​ |  | 289,912
Income per unit: | ​ |  |  | ​ |  |  | ​ |  |
Basic | ​ | $ | 3.05 | ​ | $ | 1.18 | ​ | $ | 5.95
Diluted | ​ | $ | 3.01 | ​ | $ | 1.12 | ​ | $ | 5.94
Schedule of Antidilutive Securities Excluded from Calculations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ |  | 2023 |  | 2022 |  | 2021
Shares subject to Forward Equity Offering | ​ | — | ​ | — | ​ | 6,250
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc. |  | 6,048 |  | 5,789 |  | 6,691
Potentially dilutive Series C Cumulative Redeemable Perpetual Preferred Stock | ​ | — | ​ | — | ​ | 541
Potentially dilutive Series J Cumulative Redeemable Preferred Stock |  | 1,794 |  | 1,736 |  | 1,318
Potentially dilutive Series K Cumulative Redeemable Preferred Stock | ​ | 1,887 | ​ | 1,825 | ​ | 1,386
Potentially dilutive Series L Cumulative Redeemable Preferred Stock | ​ | 3,095 | ​ | 2,993 | ​ | 2,274
Total |  | 12,824 |  | 12,343 |  | 18,460
​

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