Subsequent Events Review (Details) - USD ($) $ in Millions		3 Months Ended
Nov. 02, 2018	Dec. 31, 2018
2019 Notes \| Subsequent Event
Subsequent Event [Line Items]
Debt retired as part of settlement agreement	$ 116.0
Maximum \| Forecast
Subsequent Event [Line Items]
Proceeds from previous disposition		$ 25.0

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

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