ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

3 Months Ended

Mar. 31, 2013

ACCUMULATED OTHER COMPREHENSIVE LOSS

Schedule of changes, net of tax, in accumulated other comprehensive loss

	Cash Flow Hedges			Defined Benefit Pension Plans			Accumulated Other Comprehensive Income (Loss)
Beginning balance at December 31, 2012	$	(5.2	)	$	(35.7	)	$	(40.9	)
Other comprehensive income before reclassifications	0.1			—			0.1
Amounts reclassified out of accumulated other comprehensive loss	0.9			0.6			1.5
Net current period other comprehensive income	1.0			0.6			1.6
Ending balance at March 31, 2013	$	(4.2	)	$	(35.1	)	$	(39.3	)

Schedule of reclassifications out of accumulated other comprehensive loss

The following table shows the reclassifications out of accumulated other comprehensive loss during the three months ended March 31, 2013:

	Amount Reclassified			Affected Line Item in the Statements of Income
Losses on cash flow hedges
Utility commodity derivative contracts	$	0.2		Operating and maintenance expense(1)
Non-regulated commodity derivative contracts	1.1			Nonregulated revenues
Interest rate hedges	0.2			Interest expense
	1.5			Total before tax
	0.6			Tax expense
	0.9			Net of tax
Defined benefit pension plans
Amortization of prior service costs	(0.1		)	(2)
Amortization of actuarial losses	1.1			(2)
	1.0			Total before tax
	0.4			Tax expense
	0.6			Net of tax
Total reclassifications	$	1.5

⁽¹⁾  Changes in the price of natural gas used to support utility operations is not a component of the natural gas costs recovered from customers on a one-for-one basis.

⁽²⁾  These items are included in the computation of net periodic benefit cost. See Note 14, "Employee Benefit Plans," for additional information.