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Equity and Capital - Noncontrolling Interests in Operating Partnership (Details) - USD ($) shares in Thousands, $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Class of Stock |  |
Number of units (units) | 284,666 | 284,415
Percentage of total | 97.80% | 98.00%
Common stock conversion ratio | 1 |
Digital Realty Trust, L.P. |  |
Class of Stock |  |
Redeemable noncontrolling interests - operating partnership | $ 716.7 | $ 1,074.7
Common units held by third parties |  |
Class of Stock |  |
Common units held by third parties (units) | 4,387 | 4,389
Percentage of total | 1.50% | 1.50%
Incentive units held by employees and directors (see Note 14) |  |
Class of Stock |  |
Incentive units held by employees and directors (units) | 1,904 | 1,543
Percentage of total | 0.70% | 0.50%
Noncontrolling Interests in Operating Partnership |  |
Class of Stock |  |
Number of units (units) | 290,957 | 290,347
Percentage of total | 100.00% | 100.00%

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- Definition The number of each class of partnership units outstanding at the balance sheet date. Units represent shares of ownership of the general, limited, and preferred partners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04.16(a)) -URI http://asc.fasb.org/extlink&oid=120401414&loc=d3e603758-122996 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04.16(b)) -URI http://asc.fasb.org/extlink&oid=120401414&loc=d3e603758-122996 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770 + Details
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- Definition Redemption value, as if currently redeemable, of redeemable noncontrolling interest classified as temporary equity and the election has been made to accrete changes in redemption value to the earliest redemption date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 24(b) -URI http://asc.fasb.org/extlink&oid=122040564&loc=SL6540498-122764 + Details
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