Acquisitions and Dispositions (Tables)

3 Months Ended

Mar. 31, 2017

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The purchase price allocation of the Piedmont acquisition is as follows:

(in millions)
Current assets	$	497
Property, plant and equipment, net	4,714
Goodwill	3,353
Other long-term assets	804
Total assets	9,368
Current liabilities, including current maturities of long-term debt	576
Long-term liabilities	1,790
Long-term debt	2,002
Total liabilities	4,368
Total purchase price	$	5,000

Business Acquisition, Pro Forma Information [Table Text Block]

This information has been presented for illustrative purposes only and is not necessarily indicative of the consolidated results of operations that would have been achieved or the future consolidated results of operations of Duke Energy.

	Three Months Ended
(in millions)	March 31, 2016
Operating Revenues	$	5,840
Net Income Attributable to Duke Energy Corporation	832

Income Statement Disclosures

The following table presents the results of the International Disposal Group, which are included in Income from Discontinued Operations, net of tax in Duke Energy's Condensed Consolidated Statements of Operations. Interest expense directly associated with the International Disposal Group was allocated to discontinued operations. No interest from corporate level debt was allocated to discontinued operations.

	Three Months Ended
(in millions)	March 31, 2016
Operating Revenues	$	246
Fuel used in electric generation and purchased power	47
Cost of natural gas	11
Operation, maintenance and other	71
Depreciation and amortization	22
Property and other taxes	3
Other Income and Expenses, net	10
Interest Expense	22
Income before income taxes	80
Income tax benefit(a)	(39		)
Income from discontinued operations of the International Disposal Group	119
Income from discontinued operations of other businesses	3
Income from Discontinued Operations, net of tax	$	122

(a) Includes an income tax benefit of $95 million related to historical undistributed foreign earnings. See Note 16 for additional information.

Duke Energy has elected not to separately disclose discontinued operations on the Condensed Consolidated Statements of Cash Flows. The following table summarizes Duke Energy's cash flows from discontinued operations related to the International Disposal Group.

	Three Months Ended
(in millions)	March 31, 2016
Cash flows provided by (used in):
Operating activities	$	85
Investing activities	(9		)