Contingencies Contingencies (Details) $ in Millions	Sep. 30, 2017 USD ($)
Loss Contingencies [Line Items]
Loss Contingency, Receivable	$ 26.0

Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12053-110248

Name:	us-gaap_LossContingencyReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant