Discontinued Operations - Narrative (Details) $ in Millions	Aug. 31, 2017 USD ($)
Discontinued Operations and Disposal Groups [Abstract]
Proceeds from sale	$ 128.5

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

No definition available.

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