Investment in Real Estate - Land for Future Development (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($) a
Business Acquisition [Line Items]
Depreciation expense	$ 94.9	$ 88.9
Amortization expense	$ 13.2	$ 13.2
Land \| San Antonio and Santa Clara
Business Acquisition [Line Items]
Area of land acquired (in acres) \| a		30
Payment to acquire land		$ 40.1

Area of Land Acquired

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- Definition

The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

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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.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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