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Summary of Significant Accounting Policies (Net Lease Sale) (Details) $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Mar. 31, 2022 USD ($) item lease property | Jun. 30, 2021 lease | Mar. 31, 2022 USD ($) property
Discontinued operations |  |  |
Equity interest in joint ventures | 51.90% |  | 51.90%
Number of ground leases entered into | lease |  | 2 |
Third Party Buyer - Net Lease Properties |  |  |
Discontinued operations |  |  |
Number of properties sold | property | 3 |  |
Consideration for sale of properties | $ 122.0 |  |
Number of ground leases entered into | lease | 3 |  |
Discontinued Operations, Disposed of by Sale | Net Lease Sale |  |  |
Discontinued operations |  |  |
Aggregate sales price | $ 3,070.0 |  | $ 3,070.0
Recognized gain on disposal | $ 663.7 |  |
Aggregate square footage of net lease assets | 18.3 |  | 18.3
Number of joint ventures with properties included in Net Lease Sale | item | 2 |  |
Mortgage indebtedness on lease assets | $ 702.0 |  | $ 702.0
Amount of net cash consideration retained after settlement of obligations | 1,200.0 |  | 1,200.0
Discontinued Operations, Disposed of by Sale | Two Net Lease Properties |  |  |
Discontinued operations |  |  |
Aggregate sales price | $ 33.9 |  | 33.9
Recognized gain on disposal |  |  | $ 23.9
Number of properties sold | property |  |  | 2

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