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Represents the maximum flexibility to hedge any future year's expected requirements.

+ Details

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- Definition

Maximum percentage of volume to be hedged in any given month.

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- Definition

The notional amount of financial derivatives expressed in nonmonetary units.

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- Definition

Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12

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The average forward price on the group of price risk forward or futures contracts, such as gas futures contracts.

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The percentage of expected requirements covered by the aggregate notional amount of derivative contracts expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract as a percentage of expected need.

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Risk Management and Derivative Financial Instruments (Details 3) (Electric)						6 Months Ended
	Jul. 22, 2011 Natural Gas Usage - Remainder 2011 PerDth Dth	Jul. 22, 2011 Natural Gas Usage - 2012 Dth PerDth	Jul. 22, 2011 Natural Gas Usage - 2013 Dth PerDth	Jul. 22, 2011 Natural Gas Usage - 2014 Dth PerDth	Jul. 22, 2011 Natural Gas Usage - 2015 PerDth Dth	Jun. 30, 2011 Current Year Procurement Guidelines	Jun. 30, 2011 First Year Procurement Guidelines	Jun. 30, 2011 Second Year Procurement Guidelines	Jun. 30, 2011 Third Year Procurement Guidelines	Jun. 30, 2011 Fourth Year Procurement Guidelines
Volumes and percentage of anticipated volume of natural gas usage
% Hedged (as a percent)	80.00%	60.00%	41.00%	20.00%	7.00%	100.00%	60.00%	40.00%	20.00%	10.00%
Dth Hedged Physical	1,322,500,000	2,325,000,000	2,020,000,000	460,000,000
Dth Hedged Financial	790,000,000	1,420,000,000	1,440,000,000	1,120,000,000	700,000,000
Average Price (in dollars per dth)	5.913	6.618	6.079	5.607	5.562
Procurement guidelines
Maximum flexibility to hedge any future year's expected requirements (as a percent)						80.00%
Maximum percentage of volume to be hedged in any given month (as a percent)						100.00%
Minimum Percentage Hedged for Electric Segment
Minimum % Hedged (as a percent)	80.00%	60.00%	41.00%	20.00%	7.00%	100.00%	60.00%	40.00%	20.00%	10.00%