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Investments in Real Estate - Acquisitions (Details) ft² in Thousands, $ in Millions | 3 Months Ended
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Mar. 31, 2022 USD ($) ft² property | Mar. 31, 2021 USD ($) ft² property
Real Estate [Line Items] |  |
Number of properties | property | 213 | 110
Leasable square feet (sq ft) | ft² | 7,267 | 4,829
Investment | $ | $ 1,555.3 | $ 1,027.8
Weighted average lease term (years) | 12 years 3 months 18 days | 12 years 7 months 6 days
Initial average cash lease yield (percent) | 5.60% | 5.30%
New properties |  |
Real Estate [Line Items] |  |
Number of properties, new | property | 160 | 89
Leasable square feet (sq ft) | ft² | 5,399 | 3,232
Investment | $ | $ 1,424.0 | $ 969.9
Weighted average lease term (years) | 11 years 9 months 18 days | 12 years 4 months 24 days
Initial average cash lease yield (percent) | 5.60% | 5.30%
New properties | U.S. |  |
Real Estate [Line Items] |  |
Number of properties, new | property | 139 | 77
Leasable square feet (sq ft) | ft² | 2,627 | 2,299
Investment | $ | $ 629.8 | $ 566.9
Weighted average lease term (years) | 15 years | 13 years 6 months
Initial average cash lease yield (percent) | 5.70% | 5.60%
New properties | Europe (UK) |  |
Real Estate [Line Items] |  |
Number of properties, new | property | 21 | 12
Leasable square feet (sq ft) | ft² | 2,772 | 933
Investment | $ | $ 794.2 | $ 403.0
Weighted average lease term (years) | 8 years 10 months 24 days | 10 years 7 months 6 days
Initial average cash lease yield (percent) | 5.50% | 4.90%
Properties under development |  |
Real Estate [Line Items] |  |
Number of properties, under development | property | 53 | 21
Leasable square feet (sq ft) | ft² | 1,868 | 1,597
Investment | $ | $ 131.3 | $ 57.9
Weighted average lease term (years) | 17 years 3 months 18 days | 15 years 6 months
Initial average cash lease yield (percent) | 5.70% | 5.60%

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- Definition Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919359-209981 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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