PENDING MERGER WITH FORTIS INC. (Details) (Fortis Inc, USD $)	Dec. 11, 2013
Fortis Inc
Business Acquisition [Line Items]
Share price	$ 60.25

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

No definition available.

Name:	us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant