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Income per Unit (Tables) | 3 Months Ended
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Mar. 31, 2018
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,
| 2018 |  | 2017
Net income available to common stockholders | $ | 86,298 |  |  | $ | 66,145 |
Weighted average shares outstanding—basic | 205,714,173 |  |  | 159,297,027 |
Potentially dilutive common shares: |  |  |
Stock options | — |  |  | 4 |
Unvested incentive units | 302,016 |  |  | 237,336 |
Forward equity offering | — |  |  | 283,388 |
Market performance-based awards | 491,287 |  |  | 603,900 |
Weighted average shares outstanding—diluted | 206,507,476 |  |  | 160,421,655 |
Income per share: |  |  |
Basic | $ | 0.42 |  |  | $ | 0.42 |
Diluted | $ | 0.42 |  |  | $ | 0.41 |
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,
| 2018 |  | 2017
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc. | 8,295,287 |  |  | 2,177,874 |
Potentially dilutive Series C Cumulative Redeemable Perpetual Preferred Stock | 1,967,430 |  |  | — |
Potentially dilutive Series F Cumulative Redeemable Preferred Stock | — |  |  | 1,783,083 |
Potentially dilutive Series G Cumulative Redeemable Preferred Stock | 2,439,505 |  |  | 2,438,074 |
Potentially dilutive Series H Cumulative Redeemable Preferred Stock | 3,574,840 |  |  | 3,572,744 |
Potentially dilutive Series I Cumulative Redeemable Preferred Stock | 2,442,359 |  |  | 2,440,928 |
Potentially dilutive Series J Cumulative Redeemable Preferred Stock | 1,948,598 |  |  | — |
Total | 20,668,019 |  |  | 12,412,703 |
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,
| 2018 |  | 2017
Net income available to common unitholders | $ | 89,778 |  |  | $ | 67,049 |
Weighted average units outstanding—basic | 214,009,460 |  |  | 161,474,901 |
Potentially dilutive common units: |  |  |
Stock options | — |  |  | 4 |
Unvested incentive units | 302,016 |  |  | 237,336 |
Forward equity offering | — |  |  | 283,388 |
Market performance-based awards | 491,287 |  |  | 603,900 |
Weighted average units outstanding—diluted | 214,802,763 |  |  | 162,599,529 |
Income per unit: |  |  |
Basic | $ | 0.42 |  |  | $ | 0.42 |
Diluted | $ | 0.42 |  |  | $ | 0.41 |
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,
| 2018 |  | 2017
Potentially dilutive Series C Cumulative Redeemable Perpetual Preferred Units | 1,967,430 |  |  | — |
Potentially dilutive Series F Cumulative Redeemable Preferred Units | — |  |  | 1,783,083 |
Potentially dilutive Series G Cumulative Redeemable Preferred Units | 2,439,505 |  |  | 2,438,074 |
Potentially dilutive Series H Cumulative Redeemable Preferred Units | 3,574,840 |  |  | 3,572,744 |
Potentially dilutive Series I Cumulative Redeemable Preferred Units | 2,442,359 |  |  | 2,440,928 |
Potentially dilutive Series J Cumulative Redeemable Preferred Units | 1,948,598 |  |  | — |
Total | 12,372,732 |  |  | 10,234,829 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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