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Revenues (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Revenue from External Customer [Line Items]
Revenues	$ 287.1	$ 159.1	$ 594.2	$ 406.4
Real Estate [Member]
Revenue from External Customer [Line Items]
Revenues	280.2	156.4	587.1	373.5
Land [Member]
Revenue from External Customer [Line Items]
Revenues	$ 6.9	$ 2.7	$ 7.1	$ 32.9

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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.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

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