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Debt of the Operating Partnership (Floating and Base Rate Borrowing) (Details) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2018 USD ($) $ / $ $ / € $ / ¥ $ / $ $ / $ $ / $ | Dec. 31, 2017 USD ($) $ / € $ / ¥ $ / £ $ / $ $ / $
Base Rate |  |
Debt Instrument [Line Items] |  |
Interest rate basis spread | 0.00% |
Digital Realty Trust, L.P. |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 9,242,935 |
Digital Realty Trust, L.P. | Global revolving credit facility |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 594,983 | $ 558,191
Weighted-average interest rate | 2.35% | 2.21%
Interest rate basis spread | 1.00% |
Digital Realty Trust, L.P. | Global revolving credit facility | Floating Rate |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 589,983 | $ 543,191
Weighted-average interest rate | 2.32% | 2.15%
Interest rate basis spread | 1.00% |
Digital Realty Trust, L.P. | U.S. dollar ($) | Global revolving credit facility | Floating Rate |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 240,000 | $ 400,000
Weighted-average interest rate | 3.23% | 2.48%
Digital Realty Trust, L.P. | U.S. dollar ($) | Global revolving credit facility | Base Rate |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 5,000 | $ 15,000
Weighted-average interest rate | 5.25% | 4.50%
Digital Realty Trust, L.P. | British pound sterling (£) | Global revolving credit facility |  |
Debt Instrument [Line Items] |  |
Exchange rate | $ / £ |  | 1.35
Digital Realty Trust, L.P. | British pound sterling (£) | Global revolving credit facility | Floating Rate |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 0 | $ 18,918
Weighted-average interest rate | 0.00% | 1.50%
Digital Realty Trust, L.P. | Euro (€) | Global revolving credit facility |  |
Debt Instrument [Line Items] |  |
Exchange rate | $ / € | 1.16 | 1.20
Digital Realty Trust, L.P. | Euro (€) | Global revolving credit facility | Floating Rate |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 74,846 | $ 31,213
Weighted-average interest rate | 0.62% | 0.62%
Digital Realty Trust, L.P. | Australian dollar (AUD) | Global revolving credit facility |  |
Debt Instrument [Line Items] |  |
Exchange rate | $ / $ | 0.72 |
Digital Realty Trust, L.P. | Australian dollar (AUD) | Global revolving credit facility | Floating Rate |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 58,659 | $ 0
Weighted-average interest rate | 2.85% | 0.00%
Digital Realty Trust, L.P. | Hong Kong dollar (HKD) | Global revolving credit facility |  |
Debt Instrument [Line Items] |  |
Exchange rate | $ / $ | 0.13 | 0.13
Digital Realty Trust, L.P. | Hong Kong dollar (HKD) | Global revolving credit facility | Floating Rate |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 7,779 | $ 4,100
Weighted-average interest rate | 2.91% | 2.20%
Digital Realty Trust, L.P. | Japanese yen (JPY) | Global revolving credit facility |  |
Debt Instrument [Line Items] |  |
Exchange rate | $ / ¥ | 0.01 | 0.01
Digital Realty Trust, L.P. | Japanese yen (JPY) | Global revolving credit facility | Floating Rate |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 116,195 | $ 65,890
Weighted-average interest rate | 0.90% | 0.96%
Digital Realty Trust, L.P. | Singapore dollar (SGD) | Global revolving credit facility |  |
Debt Instrument [Line Items] |  |
Exchange rate | $ / $ | 0.73 |
Digital Realty Trust, L.P. | Singapore dollar (SGD) | Global revolving credit facility | Floating Rate |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 25,114 | $ 0
Weighted-average interest rate | 2.61% | 0.00%
Digital Realty Trust, L.P. | Canadian dollar (CAD) | Global revolving credit facility |  |
Debt Instrument [Line Items] |  |
Exchange rate | $ / $ | 0.77 | 0.80
Digital Realty Trust, L.P. | Canadian dollar (CAD) | Global revolving credit facility | Floating Rate |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 67,390 | $ 23,070
Weighted-average interest rate | 2.82% | 2.36%

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