Supplemental Financial Information (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2015

Dec. 31, 2014



	March 31,		December 31,
$ in millions	2015		2014

Accounts receivable, net:
Unbilled revenue	$	58.6	$	79.2
Customer receivables		109.3		104.8
Amounts due from partners in jointly owned plants		8.3		14.2
Other		5.8		4.0
Provision for uncollectible accounts		(1.4)		(1.3)
Total accounts receivable, net	$	180.6	$	200.9

Inventories, at average cost:
Fuel and limestone	$	58.9	$	65.3
Plant materials and supplies		34.3		33.5
Other		1.7		1.4
Total inventories, at average cost	$	94.9	$	100.2


	December 31,
$ in millions	2014		2013
Accounts receivable, net
Unbilled revenue	$	79.2	$	77.8
Customer receivables		104.8		102.7
Amounts due from partners in jointly-owned stations		14.2		15.8
Other		4.0		8.2
Provisions for uncollectible accounts		(1.3)		(1.2)
Total accounts receivable, net	$	200.9	$	203.3

Inventories
Fuel and limestone	$	65.3	$	42.7
Plant materials and supplies		33.5		38.2
Other		1.4		1.8
Total inventories, at average cost	$	100.2	$	82.7



Details about Accumulated Other Comprehensive Income / (Loss) components	Affected line item in the Condensed Consolidated Statements of Operations	Three months ended
		March 31,
$ in millions		2015		2014

Gains and losses on Available-for-sale securities activity (Note 7):
	Other income	$	(0.6)	$	0.3
	Tax expense		0.2		(0.1)
	Net of income taxes		(0.4)		0.2

Gains and losses on cash flow hedges (Note 8):
	Interest expense		(0.2)		(0.5)
	Revenue		(0.3)		10.2
	Purchased power		1.4		(1.1)
	Total before income taxes		0.9		8.6
	Tax expense		(0.3)		(3.1)
	Net of income taxes		0.6		5.5

Amortization of defined benefit pension items (Note 6):
	Other income		0.1		-
	Tax expense		-		-
	Net of income taxes		0.1		-

Total reclassifications for the period, net of income taxes		$	0.3	$	5.7


Details about Accumulated Other Comprehensive Income / (Loss) Components	Affected line item in the Consolidated Statements of Operations	Years ended December 31,
$ in millions		2014		2013		2012

Gains and losses on Available-for-sale securities activity (Note 9):
	Other income / (deductions)	$	0.4	$	2.1	$	(0.1)
	Total before income taxes		0.4		2.1		(0.1)
	Tax expense		(0.2)		(0.7)		-
	Net of income taxes		0.2		1.4		(0.1)

Gains and losses on cash flow hedges (Note 10):
	Interest Expense		(1.3)		-		0.2
	Revenue		28.4		2.2		(0.1)
	Purchased power		(0.7)		3.5		(1.1)
	Total before income taxes		26.4		5.7		(1.0)
	Tax expense		(9.5)		(2.3)		0.5
	Net of income taxes		16.9		3.4		(0.5)

Amortization of defined benefit pension items (Note 8):
	Tax benefit		-		0.3		-
	Net of income taxes		-		0.3		-

Total reclassifications for the period, net of income taxes		$	17.1	$	5.1	$	(0.6)




$ in millions	Gains / (losses) on available-for-sale securities		Gains / (losses) on cash flow hedges		Change in unfunded pension obligation		Total
Balance January 1, 2015	$	0.5	$	18.5	$	(11.5)	$	7.5

Other comprehensive income before reclassifications		0.5		0.1		-		0.6
Amounts reclassified from accumulated other comprehensive income / (loss)		(0.4)		0.6		0.1		0.3
Net current period other comprehensive income		0.1		0.7		0.1		0.9

Balance March 31, 2015	$	0.6	$	19.2	$	(11.4)	$	8.4


$ 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 / (loss) before reclassifications		(1.2)		19.7		4.9		23.4
Amounts reclassified from accumulated other comprehensive income / (loss)		1.4		3.4		0.3		5.1
Net current period other comprehensive income		0.2		23.1		5.2		28.5

Balance December 31, 2013		0.6		20.6		3.4		24.6

Other comprehensive loss before reclassifications		(0.3)		(19.0)		(14.9)		(34.2)
Amounts reclassified from accumulated other comprehensive income / (loss)		0.2		16.9		-		17.1
Net current period other comprehensive loss		(0.1)		(2.1)		(14.9)		(17.1)

Balance December 31, 2014	$	0.5	$	18.5	$	(11.5)	$	7.5