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RISK MANAGEMENT ACTIVITIES (Tables)
 12 Months Ended
Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of assets and liabilities from risk management activities
The tables below show our assets and liabilities from risk management activities:
 
 
 
 
December 31, 2013
(Millions)
 
Balance Sheet Presentation
 
Assets
 
Liabilities
Natural gas contracts
 
Other Current
 
$
0.6

 
$
0.1

FTRs
 
Other Current
 
1.5

 
0.3

Petroleum product contracts
 
Other Current
 
0.1

 
—

Coal contracts
 
Other Current
 
—

 
1.9

Coal contracts
 
Other Long-term
 
0.2

 
0.8

 
 
Other Current
 
2.2

 
2.3

 
 
Other Long-term
 
0.2

 
0.8

Total
 
 
 
$
2.4

 
$
3.1


 
 
 
 
December 31, 2012
(Millions)
 
Balance Sheet Presentation
 
Assets
 
Liabilities
Natural gas contracts
 
Other Current
 
$
0.1

 
$
0.6

FTRs
 
Other Current
 
1.2

 
0.1

Petroleum product contracts
 
Other Current
 
0.1

 
—

Coal contracts
 
Other Current
 
0.3

 
4.7

Coal contracts
 
Other Long-term
 
2.2

 
4.3

 
 
Other Current
 
1.7

 
5.4

 
 
Other Long-term
 
2.2

 
4.3

Total
 
 
 
$
3.9

 
$
9.7
Potential effect of netting arrangements on financial position for recognized derivative assets and liabilities
The following tables show the potential effect on our financial position of netting arrangements for recognized derivative assets and liabilities:
 
 
December 31, 2013
(Millions)
 
Gross Amount
 
Potential Effects of Netting, Including Cash Collateral
 
Net Amount
Derivative assets subject to master netting or similar arrangements
 
$
2.2

 
$
0.6

 
$
1.6

Derivative assets not subject to master netting or similar arrangements
 
0.2

 
 
 
0.2

Total risk management assets
 
$
2.4

 


 
$
1.8

 
 
 
 
 
 
 
Derivative liabilities subject to master netting or similar arrangements
 
$
0.4

 
$
0.4

 
$
—

Derivative liabilities not subject to master netting or similar arrangements
 
2.7

 
 
 
2.7

Total risk management liabilities
 
$
3.1

 


 
$
2.7


 
 
December 31, 2012
(Millions)
 
Gross Amount
 
Potential Effects of Netting, Including Cash Collateral
 
Net Amount
Derivative assets subject to master netting or similar arrangements
 
$
1.4

 
$
0.2

 
$
1.2

Derivative assets not subject to master netting or similar arrangements
 
2.5

 
 
 
2.5

Total risk management assets
 
$
3.9

 


 
$
3.7

 
 
 
 
 
 
 
Derivative liabilities subject to master netting or similar arrangements
 
$
0.7

 
$
0.7

 
$
—

Derivative liabilities not subject to master netting or similar arrangements
 
9.0

 
 
 
9.0

Total risk management liabilities
 
$
9.7

 


 
$
9.0
Cash collateral positions
The following table shows our cash collateral positions:
(Millions)
 
December 31, 2013
 
December 31, 2012
Cash collateral provided to others related to contracts under master netting or similar arrangements
 
$
3.1

 
$
4.3

Cash collateral received from others related to contracts under master netting or similar arrangements
 
0.2

 
—
Unrealized gains (losses) recorded related to non-hedge derivative contracts
The following table shows the unrealized gains (losses) recorded related to derivative contracts:
 
 
 
 
 
 
 
(Millions)
 
Financial Statement Presentation
 
2013
 
2012
 
2011
Natural gas
 
Balance Sheet — Regulatory assets (current)
 
$
0.7

 
$
2.2

 
$
(0.1
)
Natural gas
 
Balance Sheet — Regulatory liabilities (current)
 
0.3

 
0.1

 
(0.2
)
Natural gas
 
Income Statement — Cost of fuel, natural gas, and purchased power
 
—

 
0.2

 
—

FTRs
 
Balance Sheet — Regulatory assets (current)
 
0.2

 
(0.1
)
 
(0.1
)
FTRs
 
Balance Sheet — Regulatory liabilities (current)
 
(0.3
)
 
—

 
(1.1
)
Petroleum
 
Balance Sheet — Regulatory assets (current)
 
—

 
0.1

 
(0.1
)
Petroleum
 
Balance Sheet — Regulatory liabilities (current)
 
0.1

 
—

 
—

Petroleum
 
Income Statement — Operating and maintenance expense
 
—

 
—

 
(0.1
)
Coal
 
Balance Sheet — Regulatory assets (current)
 
(0.9
)
 
(2.2
)
 
(1.3
)
Coal
 
Balance Sheet — Regulatory assets (long-term)
 
3.5

 
0.1

 
(4.4
)
Coal
 
Balance Sheet — Regulatory liabilities (current)
 
(0.2
)
 
0.3

 
—

Coal
 
Balance Sheet — Regulatory liabilities (long-term)
 
(2.0
)
 
2.2

 
(3.7
)
Notional volumes of outstanding nonhedge derivative contracts
We had the following notional volumes of outstanding derivative contracts:
 
 
December 31, 2013
 
December 31, 2012
Commodity
 
Purchases
 
Sales
 
Other  Transactions
 
Purchases
 
Other Transactions
Natural gas (millions of therms)
 
2,242.5

 
7.0

 
N/A

 
86.1

 
N/A

FTRs (millions of kilowatt-hours)
 
N/A

 
N/A

 
3,427.0

 
N/A

 
3,838.2

Petroleum products (barrels)
 
73,002.0

 
14,000.0

 
N/A

 
33,002.0

 
N/A

Coal contract (millions of tons)
 
4.8

 
—

 
N/A

 
5.1

 
N/A