CONDENSED CONSOLIDATED STATEMENT OF EQUITY (Parenthetical) $ in Millions	9 Months Ended
Mar. 31, 2018 USD ($)
CONDENSED CONSOLIDATED STATEMENT OF EQUITY
Redeemable noncontrolling interest related to LearnBop	$ 0.2

Amount after tax of income (loss) attributable to redeemable noncontrolling shareholder, unit holder, partner, or other equity holder of a joint venture.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.19)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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