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.

Name:	us-gaap_ClassOfStockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Shareholders' Equity - Schedule of Declared Distributions (Details) - $ / shares	Oct. 30, 2017	Jul. 28, 2017	Apr. 28, 2017	Jan. 30, 2017
Series D
Class of Stock [Line Items]
Dividend Per Share (in dollars per share)	$ 0.40625	$ 0.40625	$ 0.40625	$ 0.40625