Regulatory Matters (Tables)

3 Months Ended

Mar. 31, 2015

Public Utilities, General Disclosures [Line Items]

Schedule of Potential Plant Retirements

The table below contains the net carrying value of generating facilities planned for retirement or being evaluated for potential retirement included in recent IRPs. Dollar amounts in the table below are included in Net property, plant and equipment on the Condensed Consolidated Balance Sheets.

	March 31, 2015
	Duke Energy		Progress Energy(b)		Duke Energy Florida(b)		Duke Energy Ohio(c)		Duke Energy Indiana(d)
Capacity (in MW)	1,704		873		873		163		668
Remaining net book value (in millions)(a)	$	243	$	120	$	120	$	9	$	114

(a) Included in Property, plant and equipment, net as of March 31, 2015, on the Condensed Consolidated Balance Sheets.

(b) Includes Crystal River Units 1 and 2.

(c) Includes Miami Fort Unit 6, which is expected to be retired by June 1, 2015.

(d) Includes Wabash River Units 2 through 6. Wabash River Unit 6 is being evaluated for potential conversion to natural gas. Duke Energy Indiana committed to retire or convert the Wabash River Units 2 through 5 by June 2018 in conjunction with a settlement agreement associated with the Edwardsport air permit.

Duke Energy Ohio [Member]

Public Utilities, General Disclosures [Line Items]

Schedule of MISO Exit Fee Obligations

The following table provides a reconciliation of the beginning and ending balances of Duke Energy Ohio’s recorded obligations related to its withdrawal from MISO. As of March 31, 2015, $73 million is recorded as a Regulatory asset on Duke Energy Ohio's Condensed Consolidated Balance Sheets.

(in millions)	December 31, 2014		Provision / Adjustments		Cash Reductions			March 31, 2015
Duke Energy Ohio	$	94	$	—	$	(1	)	$	93