Related Party Transactions - Berkadia Commercial Mortgage, LLC (Details) - USD ($) $ in Millions	Aug. 31, 2018	Nov. 30, 2017
Berkadia Commercial Mortgage, LLC \| Affiliated Entity
Related Party Transaction [Line Items]
Purchase commitment amount	$ 748.8	$ 864.1

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.

No definition available.

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