Regulatory Matters (Tables)

9 Months Ended

Sep. 30, 2013

Public Utilities, General Disclosures [Line Items]

Schedule of Potential Plant Retirements

		September 30, 2013
		Duke Energy		Duke Energy Carolinas		(b)	Progress Energy		Duke Energy Progress		(c)(d)	Duke Energy Florida		(e)	Duke Energy Ohio		(f)	Duke Energy Indiana		(g)
Capacity (in MW)			3,244		200			1,448		575			873			928			668
Remaining net book value (in millions)(a)		$	319	$	14		$	171	$	59		$	112		$	10		$	124
(a)	Included in Property, plant and equipment, net as of September 30, 2013, on the Condensed Consolidated Balance Sheets, unless otherwise noted.
(b)	Includes Lee Units 1 and 2. Excludes 170 MW Lee Unit 3 that is expected to be converted to gas in 2014. Duke Energy Carolinas expects to retire or convert these units by December 2020 in conjunction with a settlement agreement associated with the Cliffside Unit 6 air permit.
(c)	Includes Sutton Station, which is expected to be retired by the end of 2013.
(d)	Remaining net book value of Duke Energy Progress' Sutton Station is included in Generation facilities to be retired, net, on the Condensed Consolidated Balance Sheets at September 30, 2013.
(e)	Includes Crystal River Units 1 and 2.
(f)	Includes Beckjord Station Units 2 through 6 and Miami Fort Unit 6. Beckjord units have no remaining book value. Beckjord units 2 and 3 were retired effective October 1, 2013.
(g)	Includes Wabash River Units 2 through 6. Wabash River Unit 6 is being evaluated for potential conversion to gas. Duke Energy Indiana committed to retire or convert these units by June 2018 in conjunction with a settlement agreement associated with the Edwardsport air permit.
Duke Energy continues to evaluate the potential need to retire these coal-fired generating facilities earlier than the current estimated useful lives, and plans to seek regulatory recovery for amounts that would not be otherwise recovered when any of these assets are retired. However, such recovery, including recovery of carrying costs on remaining book values, could be subject to future regulatory approvals and therefore cannot be assured.

Duke Energy Florida [Member]

Public Utilities, General Disclosures [Line Items]

Schedule of FPSC Settlement Agreement Customer Refunds

		September 30, 2013
						Remaining Amount to be Refunded
(in millions)		Total		Refunded to date		2013		2014		2015		2016
2012 Settlement refund(a)		$	288	$	97	$	32	$	139	$	10	$	10
Retirement decision refund			100		―		―		―		40		60
NEIL proceeds			490		245		81		164		―		―
Total customer refunds		$	878		342		113		303		50		70
Accelerated regulatory asset recovery			(135)		―		―		(38)		(38)		(59)
Net customer refunds			743	$	342	$	113	$	265	$	12	$	11
(a)	See discussion under Customer Rate Matters section below.

Duke Energy Ohio [Member]

Public Utilities, General Disclosures [Line Items]

Schedule of MISO Exit Fee Obligations

(in millions)		Balance at December 31, 2012		Provision / Adjustments		Cash Reductions		Balance at September 30, 2013(a)
Duke Energy Ohio		$	97	$	3	$	(3)	$	97
(a)	As of September 30, 2013, $70 million is recorded as a Regulatory asset on Duke Energy Ohio's Condensed Consolidated Balance Sheets.