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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

X

- Definition

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.

+ References

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X

- Definition

Amount of interest capitalized during the period.

+ References

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-SubTopic 20
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- Definition

Total interest costs incurred during the period and either capitalized or charged against earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-SubTopic 20
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No definition available.

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