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Real Estate Property, Net and Other Property, Net - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Abstract]      
Interest costs incurred $ 30.6 $ 34.1 $ 35.9
Capitalized interest costs 0.3 1.0 0.6
Depreciation expense $ 38.8 $ 35.6 $ 32.5