Equity - Narrative 4 (Details) - USD ($) $ in Millions	Jun. 09, 2016	Jun. 11, 2014
Equity [Abstract]
Debt issuance cost	$ 18.3	$ 28.5
Deferred underwriting fees		$ 27.5
Underwriter fee paid	3.66%	1.84%
Underwriting expense		$ 9.2

Costs incurred during the period, such as those relating to general administration and policy maintenance that do not vary with and are not primarily related to the acquisition or renewal of insurance contracts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.7)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 720
-Section 25
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=35755714&loc=d3e28434-158551

Name:	us-gaap_OtherUnderwritingExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration