Cash and Cash Equivalents - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jun. 30, 2019
Cash And Cash Equivalents [Abstract]
Credit card receivables from third party consumer credit card providers	$ 3.4	$ 9.7

Amounts receivable from issuing a card to individuals or businesses that allows someone to make a purchase on borrowed money.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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