Significant Accounting Policies - Non-trade and notes receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Accounting Policies [Abstract]
Notes receivable	$ 149,254	$ 118,351
Accounts receivable, other	179,145	136,636
Total	$ 328,399	$ 254,987

The sum of amounts currently receivable other than from customers. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

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