Commitments and Contingencies (Table)

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Valuation and Qualifying Accounts Disclosure [Line Items]

Accrual For Environmental Loss Contingencies

	Three Months Ended March 31, 2014
(in millions)	Duke Energy		Duke Energy Carolinas		Progress Energy		Duke Energy Progress		Duke Energy Florida		Duke Energy Ohio		Duke Energy Indiana
Balance at beginning of period	$	79	$	11	$	27	$	8	$	19	$	27	$	7
Provisions / adjustments		3		―		3		2		1		―		―
Cash reductions		(1)		―		(1)		―		(1)		―		―
Balance at end of period	$	81	$	11	$	29	$	10	$	19	$	27	$	7

	Three Months Ended March 31, 2013
(in millions)	Duke Energy		Duke Energy Carolinas		Progress Energy		Duke Energy Progress		Duke Energy Florida		Duke Energy Ohio		Duke Energy Indiana
Balance at beginning of period	$	75	$	12	$	33	$	14	$	19	$	15	$	8
Provisions / adjustments		2		―		1		―		1		―		―
Cash reductions		(6)		―		(2)		(1)		(1)		(2)		(1)
Balance at end of period	$	71	$	12	$	32	$	13	$	19	$	13	$	7

Schedule of Additional Possible Losses in Excess of Recorded Environmental Reserves

(in millions)
Duke Energy	$	75
Duke Energy Carolinas		29
Progress Energy		5
Duke Energy Progress		2
Duke Energy Florida		3
Duke Energy Ohio		35
Duke Energy Indiana		6

Estimated Costs of Potential Approaches To Coal Ash Management

(in billions)		Range
Baseline assumptions(a)		$	2.0	-	2.5
Estimated additional costs related to full excavation(b)			4.0	-	5.5
Estimated additional costs related to all-dry systems(c)			1.0	-	2.0
Total range of costs		$	2.0	-	10.0
(a)	Assumes (i) hybrid cap in place closure for ash basins at ten coal plants, (ii) excavation and relocation of ash to lined structural fills or landfills for the retired Dan River, Riverbend and Sutton coal plants, (iii) dry fly ash conversion at the Asheville units and Cliffside Unit 5, (iv) continued structural fill disposal for the Asheville coal plant, and (v) dry bottom ash handling conversions and fly ash reliability improvements. Includes costs for actions noted in the March 12, 2014 letter to the Governor of North Carolina and existing plans to close ash basins.
(b)	Represents estimated additional costs to excavate and relocate ash to lined landfills for the ten plants under hybrid cap in place closure in the baseline assumptions.
(c)	Represents estimated additional costs to convert all active coal plants to all-dry pneumatic bottom ash handling systems and thermally-driven evaporation of other process water.

Estimated Costs of Complying With Recently Issued and Proposed EPA Regulations

(in millions)	Range
Duke Energy	$	525	-	625
Duke Energy Carolinas		40	-	50
Progress Energy		25	-	40
Duke Energy Progress		10	-	15
Duke Energy Florida		15	-	25
Duke Energy Ohio		35	-	50
Duke Energy Indiana		425	-	485

Schedule of Litigation Reserves and Related Insurance Recoveries

(in millions)		March 31, 2014		December 31, 2013
Reserves for Legal and Other Matters(a)
Duke Energy(b)		$	817	$	824
Duke Energy Carolinas(b)			609		616
Progress Energy			78		78
Duke Energy Progress			10		10
Duke Energy Florida			43		43
Duke Energy Indiana			8		8
Probable Insurance Recoveries(c)
Duke Energy(d)		$	649	$	649
Duke Energy Carolinas(d)			649		649
(a)	Reserves are classified on the Condensed Consolidated Balance Sheets in Other within Deferred Credits and Other Liabilities and Other within Current Liabilities.
(b)	Includes reserves for asbestos-related injuries and damages claims.
(c)	Insurance recoveries are classified on the Condensed Consolidated Balance Sheets in Receivables and Other within Investments and Other Assets.
(d)	Relates to recoveries associated with asbestos-related injuries and damages claims.