COMMITMENTS AND CONTINGENCIES (Capital commitments) (Details)	Jun. 30, 2017 CNY (¥)
2018	¥ 2,363,481,454
2019	262,609,050
Thereafter	0
Total	¥ 2,626,090,504

Minimum amount of purchase arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

No definition available.

Name:	us-gaap_PurchaseObligationDueInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant