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Business Segments (Tables)
 6 Months Ended
Jun. 30, 2016
Segment Reporting Information [Line Items]  
Business Segment Data
The following table provides the amount of Other net expense.
 
Three Months Ended
Six Months Ended
 
June 30,
June 30,
(in millions)
2016

 
2015

2016

 
2015

Duke Energy Carolinas
$
(17
)
 
$
(10
)
$
(34
)
 
$
(18
)
Progress Energy(a)
(45
)
 
(42
)
(94
)
 
(84
)
Duke Energy Progress
(8
)
 
(4
)
(16
)
 
(8
)
Duke Energy Florida
(5
)
 
(3
)
(9
)
 
(6
)
Duke Energy Ohio
(10
)
 
(6
)
(19
)
 
(8
)
Duke Energy Indiana
(5
)
 
(2
)
(7
)
 
(4
)

(a)
Other for Progress Energy also includes interest expense on corporate debt instruments of $55 million and $111 million for the three and six months ended June 30, 2016, respectively, and $59 million and $119 million for the three and six months ended June 30, 2015, respectively.
 
Three Months Ended June 30, 2016
 
 
 
 
 
 
 
Total

 
 
 
 
 
 
 
Regulated

 
International

 
Commercial

 
Reportable

 
 
 
 
 
 
(in millions)
Utilities

 
Energy

 
Portfolio

 
Segments

 
Other

 
Eliminations

 
Consolidated

Unaffiliated revenues
$
5,090

 
$
270

 
$
112

 
$
5,472

 
$
12

 
$
—

 
$
5,484

Intersegment revenues
9

 
—

 
—

 
9

 
17

 
(26
)
 
—

Total revenues
$
5,099

 
$
270

 
$
112

 
$
5,481

 
$
29

 
$
(26
)
 
$
5,484

Segment income (loss)(a)(b)
$
718

 
$
(102
)
 
$
14

 
$
630

 
$
(120
)
 
$
—

 
$
510

Add back noncontrolling interests
 
 
 
 
 
 
 
 
 
 
 
 
3

Loss from discontinued operations, net of tax
 
 
 
 
 
 
 
 
 
 
 
 
(1
)
Net income
 
 
 
 
 
 
 
 
 
 
 
 
$
512

Segment assets
$
112,754

 
$
3,131

 
$
4,329

 
$
120,214

 
$
2,260

 
$
180

 
$
122,654

(a)
Other includes after-tax charges for costs to achieve mergers of $69 million, primarily due to unrealized losses on forward-starting interest rate swaps related to the Piedmont acquisition, and cost savings initiatives of $15 million primarily due to severance costs. See Notes 2 and 9 for additional information related to the forward-starting interest rate swaps.
(b)
International Energy includes an after-tax impairment charge of $145 million. See Note 2 for additional information.
 
Three Months Ended June 30, 2015
 
 
 
 
 
 
 
Total

 
 
 
 
 
 
 
Regulated

 
International

 
Commercial

 
Reportable

 
 
 
 
 
 
(in millions)
Utilities

 
Energy

 
Portfolio

 
Segments

 
Other

 
Eliminations

 
Consolidated

Unaffiliated revenues
$
5,211

 
$
287

 
$
75

 
$
5,573

 
$
16

 
$
—

 
$
5,589

Intersegment revenues
9

 
—

 
—

 
9

 
18

 
(27
)
 
—

Total revenues
$
5,220

 
$
287

 
$
75

 
$
5,582

 
$
34

 
$
(27
)
 
$
5,589

Segment income (loss)(a)(b)
$
632

 
$
52

 
$
(30
)
 
$
654

 
$
(51
)
 
$
(3
)
 
$
600

Add back noncontrolling interests
 
 
 
 
 
 
 
 
 
 
 
 
4

Loss from discontinued operations, net of tax(c)
 
 
 
 
 
 
 
 
 
 
 
 
(57
)
Net income
 
 
 
 
 
 
 
 
 
 
 
 
$
547

(a)    Other includes after-tax costs to achieve the Progress Energy merger of $14 million.
(b)
Commercial Portfolio includes state tax expense of $41 million, resulting from changes to state apportionment factors due to the sale of the Disposal Group, that does not qualify for discontinued operations. Refer to Note 2 for further information related to the sale.
(c)
Includes the after-tax impact of $46 million for the agreement in principle reached in a lawsuit related to the Disposal Group. Refer to Note 5 for further information related to the lawsuit.
 
Six Months Ended June 30, 2016
 
 
 
 
 
 
 
Total

 
 
 
 
 
 
 
Regulated

 
International

 
Commercial

 
Reportable

 
 
 
 
 
 
(in millions)
Utilities

 
Energy

 
Portfolio

 
Segments

 
Other

 
Eliminations

 
Consolidated

Unaffiliated revenues
$
10,340

 
$
516

 
$
227

 
$
11,083

 
$
23

 
$
—

 
$
11,106

Intersegment revenues
18

 
—

 
—

 
9

 
35

 
(53
)
 
—

Total revenues
$
10,358

 
$
516

 
$
227

 
$
11,092

 
$
58

 
$
(53
)
 
$
11,106

Segment income (loss)(a)(b)
$
1,413

 
$
21

 
$
41

 
$
1,475

 
$
(274
)
 
$
—

 
$
1,201

Add back noncontrolling interests
 
 
 
 
 
 
 
 
 
 
 
 
8

Income from discontinued operations, net of tax
 
 
 
 
 
 
 
 
 
 
 
 
2

Net income
 
 
 
 
 
 
 
 
 
 
 
 
$
1,211

(a)
Other includes after-tax charges for costs to achieve mergers of $143 million, primarily due to unrealized losses on forward-starting interest rate swaps related to the Piedmont acquisition, and cost savings initiatives of $27 million primarily due to severance costs. See Notes 2 and 9 for additional information related to the forward-starting interest rate swaps.
(b)
International Energy includes an after-tax impairment charge of $145 million. See Note 2 for additional information.
 
Six Months Ended June 30, 2015
 
 
 
 
 
 
 
Total

 
 
 
 
 
 
 
Regulated

 
International

 
Commercial

 
Reportable

 
 
 
 
 
 
(in millions)
Utilities

 
Energy

 
Portfolio

 
Segments

 
Other

 
Eliminations

 
Consolidated

Unaffiliated revenues
$
10,924

 
$
560

 
$
148

 
$
11,632

 
$
22

 
$
—

 
$
11,654

Intersegment revenues
19

 
—

 
—

 
19

 
39

 
(58
)
 
—

Total revenues
$
10,943

 
$
560

 
$
148

 
$
11,651

 
$
61

 
$
(58
)
 
$
11,654

Segment income (loss)(a)(b)
$
1,406

 
$
88

 
$
(23
)
 
$
1,471

 
$
(94
)
 
$
(4
)
 
$
1,373

Add back noncontrolling interests
 
 
 
 
 
 
 
 
 
 
 
 
7

Income from discontinued operations, net of tax(c)
 
 
 
 
 
 
 
 
 
 
 
 
34

Net income
 
 
 
 
 
 
 
 
 
 
 
 
$
1,414

(a)    Other includes after-tax costs to achieve the Progress Energy merger of $27 million.
(b)
Commercial Portfolio includes state tax expense of $41 million, resulting from changes to state apportionment factors due to the sale of the Disposal Group, that does not qualify for discontinued operations. Refer to Note 2 for further information related to the sale.
(c)
Includes after-tax impact of $53 million for the agreement in principle reached in a lawsuit related to the Disposal Group. Refer to Note 5 for further information related to the lawsuit.