EQUITY COMMON SHARE REPURCHASE PROGRAM (Details)	Mar. 31, 2018 shares
COMMON SHARE REPURCHASE PROGRAM [Abstract]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	55,000,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	8,274,588

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

No definition available.

Name:	us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant