2. Supplemental Financial Information

Accounts receivable and Inventories are as follows at March 31, 2013 and December 31, 2012:



	At		At
	March 31,		December 31,
$ in millions	2013		2012

Accounts receivable, net:
Unbilled revenue	$	65.3	$	75.2
Customer receivables		107.5		98.2
Amounts due from partners in jointly owned plants		15.3		19.7
Coal sales		-		1.6
Other		3.1		14.6
Provision for uncollectible accounts		(1.1)		(1.1)
Total accounts receivable, net	$	190.1	$	208.2

Inventories, at average cost:
Fuel and limestone	$	72.0	$	67.3
Plant materials and supplies		40.6		41.0
Other		1.9		1.8
Total inventories, at average cost	$	114.5	$	110.1

Accumulated Other Comprehensive Income / (Loss)

The amounts reclassified out of Accumulated Other Comprehensive Income / (Loss) by component during the three months ended March 31, 2013 are as follows:



Details about Accumulated Other Comprehensive Income / (Loss) components	Affected line item in the Condensed Consolidated Statement of Operations	Three months ended March 31,
$ in millions		2013

Gains and losses on Available-for-sale securities activity (Note 8):
	Other income / (deductions)	$	0.1
	Total before income taxes		0.1
	Tax expense		-
	Net of income taxes		0.1

Gains and losses on cash flow hedges: (Note 9)
	Revenue		(0.5)
	Purchased power		0.8
	Total before income taxes		0.3
	Tax expense		(0.1)
	Net of income taxes		0.2

Amortization of defined benefit pension items: (Note 7)
	Reclassification to Other income / (deductions)		-
	Prior service cost for the period ⁽¹⁾		-
	Net loss for the period ⁽¹⁾		-
	Total before income taxes		-
	Tax benefit		0.3
	Net of income taxes		0.3

Total reclassifications for the period, net of income taxes		$	0.6

(1) These Accumulated Other Comprehensive Income / (Loss) components are included in the computation of net periodic pension costs (See Note 7 for additional information).

The changes in the components of Accumulated Other Comprehensive Income / (Loss) during the three months ended March 31, 2013 are as follows:




$ in millions	Gains / (losses) on Available-for-sale securities		Gains / (losses) on Cash Flow Hedges		Change in Unfunded Pension Obligation		Total
Balance January 1, 2013	$	0.4	$	(2.5)	$	(1.8)	$	(3.9)

Other comprehensive income before reclassifications		0.2		1.2		-		1.4
Amounts reclassified from accumulated other comprehensive income / (loss)		0.1		0.2		0.3		0.6
Net current period other comprehensive income		0.3		1.4		0.3		2.0

Balance March 31, 2013	$	0.7	$	(1.1)	$	(1.5)	$	(1.9)