RISK MANAGEMENT ACTIVITIES RISK MANAGEMENT ACTIVITIES (Details 3) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Assets
Gross Amount	$ 2.9	$ 1.4
Gross Amount Not Offset in the Balance Sheet including Cash Collateral	0.8	0.2
Net Amount	2.1	1.2
Derivative assets not subject to master netting arrangement		2.5
Risk Management Asset	2.9	3.9
Total Risk Management Assets, Net Amount	2.1	3.7
Liabilities
Gross Amount	1.0	0.7
Gross Amount Not Offset in the Balance Sheet including Cash Collateral	1.0	0.7
Net Amount	0	0
Derivative liabilities not subject to master netting arrangement	2.3	9.0
Risk Management Liability	3.3	9.7
Total Risk Management Liabilities, Net Amount	2.3	9.0
Cash collateral provided to others related to contracts under master netting or similar arrangements	$ 3.7	$ 4.3