Related Party Transactions and Arrangements - Unconsummated Sale of Cole Capital (Details) - USD ($) $ in Millions	Dec. 04, 2014	Oct. 01, 2014
Affiliated Entity [Member] \| RCAP Purchase Agreement [Member]
Related Party Transaction [Line Items]
Settlement, cash paid	$ 42.7
Notes receivable	15.3
Debt forgiveness	$ 2.0
Cole Capital [Member]
Related Party Transaction [Line Items]
Gross proceeds (at least)		$ 700.0
Maximum earn-out potential		$ 130.0

Decrease for amounts of indebtedness forgiven by the holder of the debt instrument.

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