Consolidated Statements of Operations (Parentheticals) - $ / shares		3 Months Ended	12 Months Ended
Nov. 19, 2014	Dec. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Cash dividends declared per share (including Special Cash dividend of 16.50) (in dollars per share)			$ 18.5	$ 1.8	$ 1.6
Special Cash Dividend
Cash dividends declared per share (including Special Cash dividend of 16.50) (in dollars per share)	$ 16.50	$ 16.50

Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration