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Related Party Transactions (Tables)
 3 Months Ended
Mar. 31, 2017
Duke Energy Carolinas [Member]  
Related Party Transaction [Line Items]  
Schedule of Related Party Transactions, Other Revenue and Expense
Material amounts related to transactions with related parties included in the Condensed Consolidated Statements of Operations and Comprehensive Income are presented in the following table.
 
Three Months Ended March 31,
(in millions)
2017

 
2016

Duke Energy Carolinas
 
 
 
Corporate governance and shared service expenses(a)
$
199

 
$
217

Indemnification coverages(b)
6

 
5

JDA revenue(c)
16

 
9

JDA expense(c)
31

 
41

Intercompany natural gas purchases(d)
1

 
—

Progress Energy
 
 
 
Corporate governance and shared service expenses(a)
$
169

 
$
174

Indemnification coverages(b)
10

 
9

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Progress
 
 
 
Corporate governance and shared service expenses(a)
$
103

 
$
100

Indemnification coverages(b)
4

 
4

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Florida
 
 
 
Corporate governance and shared service expenses(a)
$
66

 
$
74

Indemnification coverages(b)
6

 
5

Duke Energy Ohio
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
85

Indemnification coverages(b)
1

 
1

Duke Energy Indiana
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
94

Indemnification coverages(b)
2

 
2

Piedmont
 
 
 
Corporate governance and shared service expenses(a)
$
6

 
$
—

Indemnification coverages(b)
1

 
—

Intercompany natural gas sales(d)
20

 
—

(a)
The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(b)
The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(c)
Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power under the JDA are recorded in Operating Revenues on the Condensed Consolidated Statements of Operations and Comprehensive Income. Expenses from the purchase of power under the JDA are recorded in Fuel used in electric generation and purchased power on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(d)
Piedmont provides long-term natural gas delivery service to Duke Energy Carolinas and Duke Energy Progress' natural gas-fired generation facilities. Piedmont recorded the sales in Operating Revenues – Regulated natural gas, and Duke Energy Carolinas and Duke Energy Progress recorded the related purchases in Operating Expenses – Cost of natural gas on their Condensed Consolidated Statements of Operations and Comprehensive Income. The amounts are not eliminated in accordance with rate-based accounting regulations. For the three months ended March 31, 2016, which was prior to the Piedmont acquisition, Piedmont recorded $19 million and $1 million of natural gas sales with Duke Energy Progress and Duke Energy Carolinas, respectively.
Intercompany Income Tax Receivable/Payable
The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.
 
Duke

 
Duke

Duke

Duke

Duke

 
 
Energy

Progress

Energy

Energy

Energy

Energy

 
(in millions)
Carolinas

Energy

Progress

Florida

Ohio

Indiana

Piedmont

March 31, 2017
 
 
 
 
 
 
 
Intercompany income tax receivable
$
19

$
139

$
47

$
48

$
8

$
—

$
—

Intercompany income tax payable
—

—

—

—

—

23

44

 
 
 
 
 
 
 
 
December 31, 2016
 
 
 
 
 
 
 
Intercompany income tax receivable
$
1

$
—

$
—

$
37

$
—

$
—

$
—

Intercompany income tax payable
—

37

90

—

1

3

38
Progress Energy [Member]  
Related Party Transaction [Line Items]  
Schedule of Related Party Transactions, Other Revenue and Expense
Material amounts related to transactions with related parties included in the Condensed Consolidated Statements of Operations and Comprehensive Income are presented in the following table.
 
Three Months Ended March 31,
(in millions)
2017

 
2016

Duke Energy Carolinas
 
 
 
Corporate governance and shared service expenses(a)
$
199

 
$
217

Indemnification coverages(b)
6

 
5

JDA revenue(c)
16

 
9

JDA expense(c)
31

 
41

Intercompany natural gas purchases(d)
1

 
—

Progress Energy
 
 
 
Corporate governance and shared service expenses(a)
$
169

 
$
174

Indemnification coverages(b)
10

 
9

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Progress
 
 
 
Corporate governance and shared service expenses(a)
$
103

 
$
100

Indemnification coverages(b)
4

 
4

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Florida
 
 
 
Corporate governance and shared service expenses(a)
$
66

 
$
74

Indemnification coverages(b)
6

 
5

Duke Energy Ohio
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
85

Indemnification coverages(b)
1

 
1

Duke Energy Indiana
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
94

Indemnification coverages(b)
2

 
2

Piedmont
 
 
 
Corporate governance and shared service expenses(a)
$
6

 
$
—

Indemnification coverages(b)
1

 
—

Intercompany natural gas sales(d)
20

 
—

(a)
The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(b)
The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(c)
Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power under the JDA are recorded in Operating Revenues on the Condensed Consolidated Statements of Operations and Comprehensive Income. Expenses from the purchase of power under the JDA are recorded in Fuel used in electric generation and purchased power on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(d)
Piedmont provides long-term natural gas delivery service to Duke Energy Carolinas and Duke Energy Progress' natural gas-fired generation facilities. Piedmont recorded the sales in Operating Revenues – Regulated natural gas, and Duke Energy Carolinas and Duke Energy Progress recorded the related purchases in Operating Expenses – Cost of natural gas on their Condensed Consolidated Statements of Operations and Comprehensive Income. The amounts are not eliminated in accordance with rate-based accounting regulations. For the three months ended March 31, 2016, which was prior to the Piedmont acquisition, Piedmont recorded $19 million and $1 million of natural gas sales with Duke Energy Progress and Duke Energy Carolinas, respectively.
Intercompany Income Tax Receivable/Payable
The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.
 
Duke

 
Duke

Duke

Duke

Duke

 
 
Energy

Progress

Energy

Energy

Energy

Energy

 
(in millions)
Carolinas

Energy

Progress

Florida

Ohio

Indiana

Piedmont

March 31, 2017
 
 
 
 
 
 
 
Intercompany income tax receivable
$
19

$
139

$
47

$
48

$
8

$
—

$
—

Intercompany income tax payable
—

—

—

—

—

23

44

 
 
 
 
 
 
 
 
December 31, 2016
 
 
 
 
 
 
 
Intercompany income tax receivable
$
1

$
—

$
—

$
37

$
—

$
—

$
—

Intercompany income tax payable
—

37

90

—

1

3

38
Duke Energy Progress [Member]  
Related Party Transaction [Line Items]  
Schedule of Related Party Transactions, Other Revenue and Expense
Material amounts related to transactions with related parties included in the Condensed Consolidated Statements of Operations and Comprehensive Income are presented in the following table.
 
Three Months Ended March 31,
(in millions)
2017

 
2016

Duke Energy Carolinas
 
 
 
Corporate governance and shared service expenses(a)
$
199

 
$
217

Indemnification coverages(b)
6

 
5

JDA revenue(c)
16

 
9

JDA expense(c)
31

 
41

Intercompany natural gas purchases(d)
1

 
—

Progress Energy
 
 
 
Corporate governance and shared service expenses(a)
$
169

 
$
174

Indemnification coverages(b)
10

 
9

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Progress
 
 
 
Corporate governance and shared service expenses(a)
$
103

 
$
100

Indemnification coverages(b)
4

 
4

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Florida
 
 
 
Corporate governance and shared service expenses(a)
$
66

 
$
74

Indemnification coverages(b)
6

 
5

Duke Energy Ohio
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
85

Indemnification coverages(b)
1

 
1

Duke Energy Indiana
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
94

Indemnification coverages(b)
2

 
2

Piedmont
 
 
 
Corporate governance and shared service expenses(a)
$
6

 
$
—

Indemnification coverages(b)
1

 
—

Intercompany natural gas sales(d)
20

 
—

(a)
The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(b)
The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(c)
Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power under the JDA are recorded in Operating Revenues on the Condensed Consolidated Statements of Operations and Comprehensive Income. Expenses from the purchase of power under the JDA are recorded in Fuel used in electric generation and purchased power on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(d)
Piedmont provides long-term natural gas delivery service to Duke Energy Carolinas and Duke Energy Progress' natural gas-fired generation facilities. Piedmont recorded the sales in Operating Revenues – Regulated natural gas, and Duke Energy Carolinas and Duke Energy Progress recorded the related purchases in Operating Expenses – Cost of natural gas on their Condensed Consolidated Statements of Operations and Comprehensive Income. The amounts are not eliminated in accordance with rate-based accounting regulations. For the three months ended March 31, 2016, which was prior to the Piedmont acquisition, Piedmont recorded $19 million and $1 million of natural gas sales with Duke Energy Progress and Duke Energy Carolinas, respectively.
Intercompany Income Tax Receivable/Payable
The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.
 
Duke

 
Duke

Duke

Duke

Duke

 
 
Energy

Progress

Energy

Energy

Energy

Energy

 
(in millions)
Carolinas

Energy

Progress

Florida

Ohio

Indiana

Piedmont

March 31, 2017
 
 
 
 
 
 
 
Intercompany income tax receivable
$
19

$
139

$
47

$
48

$
8

$
—

$
—

Intercompany income tax payable
—

—

—

—

—

23

44

 
 
 
 
 
 
 
 
December 31, 2016
 
 
 
 
 
 
 
Intercompany income tax receivable
$
1

$
—

$
—

$
37

$
—

$
—

$
—

Intercompany income tax payable
—

37

90

—

1

3

38
Duke Energy Florida [Member]  
Related Party Transaction [Line Items]  
Schedule of Related Party Transactions, Other Revenue and Expense
Material amounts related to transactions with related parties included in the Condensed Consolidated Statements of Operations and Comprehensive Income are presented in the following table.
 
Three Months Ended March 31,
(in millions)
2017

 
2016

Duke Energy Carolinas
 
 
 
Corporate governance and shared service expenses(a)
$
199

 
$
217

Indemnification coverages(b)
6

 
5

JDA revenue(c)
16

 
9

JDA expense(c)
31

 
41

Intercompany natural gas purchases(d)
1

 
—

Progress Energy
 
 
 
Corporate governance and shared service expenses(a)
$
169

 
$
174

Indemnification coverages(b)
10

 
9

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Progress
 
 
 
Corporate governance and shared service expenses(a)
$
103

 
$
100

Indemnification coverages(b)
4

 
4

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Florida
 
 
 
Corporate governance and shared service expenses(a)
$
66

 
$
74

Indemnification coverages(b)
6

 
5

Duke Energy Ohio
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
85

Indemnification coverages(b)
1

 
1

Duke Energy Indiana
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
94

Indemnification coverages(b)
2

 
2

Piedmont
 
 
 
Corporate governance and shared service expenses(a)
$
6

 
$
—

Indemnification coverages(b)
1

 
—

Intercompany natural gas sales(d)
20

 
—

(a)
The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(b)
The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(c)
Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power under the JDA are recorded in Operating Revenues on the Condensed Consolidated Statements of Operations and Comprehensive Income. Expenses from the purchase of power under the JDA are recorded in Fuel used in electric generation and purchased power on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(d)
Piedmont provides long-term natural gas delivery service to Duke Energy Carolinas and Duke Energy Progress' natural gas-fired generation facilities. Piedmont recorded the sales in Operating Revenues – Regulated natural gas, and Duke Energy Carolinas and Duke Energy Progress recorded the related purchases in Operating Expenses – Cost of natural gas on their Condensed Consolidated Statements of Operations and Comprehensive Income. The amounts are not eliminated in accordance with rate-based accounting regulations. For the three months ended March 31, 2016, which was prior to the Piedmont acquisition, Piedmont recorded $19 million and $1 million of natural gas sales with Duke Energy Progress and Duke Energy Carolinas, respectively.
Intercompany Income Tax Receivable/Payable
The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.
 
Duke

 
Duke

Duke

Duke

Duke

 
 
Energy

Progress

Energy

Energy

Energy

Energy

 
(in millions)
Carolinas

Energy

Progress

Florida

Ohio

Indiana

Piedmont

March 31, 2017
 
 
 
 
 
 
 
Intercompany income tax receivable
$
19

$
139

$
47

$
48

$
8

$
—

$
—

Intercompany income tax payable
—

—

—

—

—

23

44

 
 
 
 
 
 
 
 
December 31, 2016
 
 
 
 
 
 
 
Intercompany income tax receivable
$
1

$
—

$
—

$
37

$
—

$
—

$
—

Intercompany income tax payable
—

37

90

—

1

3

38
Duke Energy Ohio [Member]  
Related Party Transaction [Line Items]  
Schedule of Related Party Transactions, Other Revenue and Expense
Material amounts related to transactions with related parties included in the Condensed Consolidated Statements of Operations and Comprehensive Income are presented in the following table.
 
Three Months Ended March 31,
(in millions)
2017

 
2016

Duke Energy Carolinas
 
 
 
Corporate governance and shared service expenses(a)
$
199

 
$
217

Indemnification coverages(b)
6

 
5

JDA revenue(c)
16

 
9

JDA expense(c)
31

 
41

Intercompany natural gas purchases(d)
1

 
—

Progress Energy
 
 
 
Corporate governance and shared service expenses(a)
$
169

 
$
174

Indemnification coverages(b)
10

 
9

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Progress
 
 
 
Corporate governance and shared service expenses(a)
$
103

 
$
100

Indemnification coverages(b)
4

 
4

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Florida
 
 
 
Corporate governance and shared service expenses(a)
$
66

 
$
74

Indemnification coverages(b)
6

 
5

Duke Energy Ohio
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
85

Indemnification coverages(b)
1

 
1

Duke Energy Indiana
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
94

Indemnification coverages(b)
2

 
2

Piedmont
 
 
 
Corporate governance and shared service expenses(a)
$
6

 
$
—

Indemnification coverages(b)
1

 
—

Intercompany natural gas sales(d)
20

 
—

(a)
The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(b)
The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(c)
Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power under the JDA are recorded in Operating Revenues on the Condensed Consolidated Statements of Operations and Comprehensive Income. Expenses from the purchase of power under the JDA are recorded in Fuel used in electric generation and purchased power on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(d)
Piedmont provides long-term natural gas delivery service to Duke Energy Carolinas and Duke Energy Progress' natural gas-fired generation facilities. Piedmont recorded the sales in Operating Revenues – Regulated natural gas, and Duke Energy Carolinas and Duke Energy Progress recorded the related purchases in Operating Expenses – Cost of natural gas on their Condensed Consolidated Statements of Operations and Comprehensive Income. The amounts are not eliminated in accordance with rate-based accounting regulations. For the three months ended March 31, 2016, which was prior to the Piedmont acquisition, Piedmont recorded $19 million and $1 million of natural gas sales with Duke Energy Progress and Duke Energy Carolinas, respectively.
Intercompany Income Tax Receivable/Payable
The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.
 
Duke

 
Duke

Duke

Duke

Duke

 
 
Energy

Progress

Energy

Energy

Energy

Energy

 
(in millions)
Carolinas

Energy

Progress

Florida

Ohio

Indiana

Piedmont

March 31, 2017
 
 
 
 
 
 
 
Intercompany income tax receivable
$
19

$
139

$
47

$
48

$
8

$
—

$
—

Intercompany income tax payable
—

—

—

—

—

23

44

 
 
 
 
 
 
 
 
December 31, 2016
 
 
 
 
 
 
 
Intercompany income tax receivable
$
1

$
—

$
—

$
37

$
—

$
—

$
—

Intercompany income tax payable
—

37

90

—

1

3

38
Duke Energy Indiana [Member]  
Related Party Transaction [Line Items]  
Schedule of Related Party Transactions, Other Revenue and Expense
Material amounts related to transactions with related parties included in the Condensed Consolidated Statements of Operations and Comprehensive Income are presented in the following table.
 
Three Months Ended March 31,
(in millions)
2017

 
2016

Duke Energy Carolinas
 
 
 
Corporate governance and shared service expenses(a)
$
199

 
$
217

Indemnification coverages(b)
6

 
5

JDA revenue(c)
16

 
9

JDA expense(c)
31

 
41

Intercompany natural gas purchases(d)
1

 
—

Progress Energy
 
 
 
Corporate governance and shared service expenses(a)
$
169

 
$
174

Indemnification coverages(b)
10

 
9

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Progress
 
 
 
Corporate governance and shared service expenses(a)
$
103

 
$
100

Indemnification coverages(b)
4

 
4

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Florida
 
 
 
Corporate governance and shared service expenses(a)
$
66

 
$
74

Indemnification coverages(b)
6

 
5

Duke Energy Ohio
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
85

Indemnification coverages(b)
1

 
1

Duke Energy Indiana
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
94

Indemnification coverages(b)
2

 
2

Piedmont
 
 
 
Corporate governance and shared service expenses(a)
$
6

 
$
—

Indemnification coverages(b)
1

 
—

Intercompany natural gas sales(d)
20

 
—

(a)
The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(b)
The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(c)
Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power under the JDA are recorded in Operating Revenues on the Condensed Consolidated Statements of Operations and Comprehensive Income. Expenses from the purchase of power under the JDA are recorded in Fuel used in electric generation and purchased power on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(d)
Piedmont provides long-term natural gas delivery service to Duke Energy Carolinas and Duke Energy Progress' natural gas-fired generation facilities. Piedmont recorded the sales in Operating Revenues – Regulated natural gas, and Duke Energy Carolinas and Duke Energy Progress recorded the related purchases in Operating Expenses – Cost of natural gas on their Condensed Consolidated Statements of Operations and Comprehensive Income. The amounts are not eliminated in accordance with rate-based accounting regulations. For the three months ended March 31, 2016, which was prior to the Piedmont acquisition, Piedmont recorded $19 million and $1 million of natural gas sales with Duke Energy Progress and Duke Energy Carolinas, respectively.
Intercompany Income Tax Receivable/Payable
The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.
 
Duke

 
Duke

Duke

Duke

Duke

 
 
Energy

Progress

Energy

Energy

Energy

Energy

 
(in millions)
Carolinas

Energy

Progress

Florida

Ohio

Indiana

Piedmont

March 31, 2017
 
 
 
 
 
 
 
Intercompany income tax receivable
$
19

$
139

$
47

$
48

$
8

$
—

$
—

Intercompany income tax payable
—

—

—

—

—

23

44

 
 
 
 
 
 
 
 
December 31, 2016
 
 
 
 
 
 
 
Intercompany income tax receivable
$
1

$
—

$
—

$
37

$
—

$
—

$
—

Intercompany income tax payable
—

37

90

—

1

3

38
Piedmont Natural Gas [Member]  
Related Party Transaction [Line Items]  
Schedule of Related Party Transactions, Other Revenue and Expense
Material amounts related to transactions with related parties included in the Condensed Consolidated Statements of Operations and Comprehensive Income are presented in the following table.
 
Three Months Ended March 31,
(in millions)
2017

 
2016

Duke Energy Carolinas
 
 
 
Corporate governance and shared service expenses(a)
$
199

 
$
217

Indemnification coverages(b)
6

 
5

JDA revenue(c)
16

 
9

JDA expense(c)
31

 
41

Intercompany natural gas purchases(d)
1

 
—

Progress Energy
 
 
 
Corporate governance and shared service expenses(a)
$
169

 
$
174

Indemnification coverages(b)
10

 
9

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Progress
 
 
 
Corporate governance and shared service expenses(a)
$
103

 
$
100

Indemnification coverages(b)
4

 
4

JDA revenue(c)
31

 
41

JDA expense(c)
16

 
9

Intercompany natural gas purchases(d)
19

 
—

Duke Energy Florida
 
 
 
Corporate governance and shared service expenses(a)
$
66

 
$
74

Indemnification coverages(b)
6

 
5

Duke Energy Ohio
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
85

Indemnification coverages(b)
1

 
1

Duke Energy Indiana
 
 
 
Corporate governance and shared service expenses(a)
$
90

 
$
94

Indemnification coverages(b)
2

 
2

Piedmont
 
 
 
Corporate governance and shared service expenses(a)
$
6

 
$
—

Indemnification coverages(b)
1

 
—

Intercompany natural gas sales(d)
20

 
—

(a)
The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(b)
The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(c)
Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power under the JDA are recorded in Operating Revenues on the Condensed Consolidated Statements of Operations and Comprehensive Income. Expenses from the purchase of power under the JDA are recorded in Fuel used in electric generation and purchased power on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(d)
Piedmont provides long-term natural gas delivery service to Duke Energy Carolinas and Duke Energy Progress' natural gas-fired generation facilities. Piedmont recorded the sales in Operating Revenues – Regulated natural gas, and Duke Energy Carolinas and Duke Energy Progress recorded the related purchases in Operating Expenses – Cost of natural gas on their Condensed Consolidated Statements of Operations and Comprehensive Income. The amounts are not eliminated in accordance with rate-based accounting regulations. For the three months ended March 31, 2016, which was prior to the Piedmont acquisition, Piedmont recorded $19 million and $1 million of natural gas sales with Duke Energy Progress and Duke Energy Carolinas, respectively.
Intercompany Income Tax Receivable/Payable
The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.
 
Duke

 
Duke

Duke

Duke

Duke

 
 
Energy

Progress

Energy

Energy

Energy

Energy

 
(in millions)
Carolinas

Energy

Progress

Florida

Ohio

Indiana

Piedmont

March 31, 2017
 
 
 
 
 
 
 
Intercompany income tax receivable
$
19

$
139

$
47

$
48

$
8

$
—

$
—

Intercompany income tax payable
—

—

—

—

—

23

44

 
 
 
 
 
 
 
 
December 31, 2016
 
 
 
 
 
 
 
Intercompany income tax receivable
$
1

$
—

$
—

$
37

$
—

$
—

$
—

Intercompany income tax payable
—

37

90

—

1

3

38
Equity Method Investee [Member] | Piedmont Natural Gas [Member]  
Related Party Transaction [Line Items]  
Schedule of Related Party Transactions, Other Revenue and Expense
Below are expenses for the three months ended March 31, 2017 and 2016, which are included in Operating Expenses – Cost of natural gas on Piedmont's Condensed Consolidated Statement of Operations and Comprehensive Income.
 
 
Three Months Ended March 31,
(in millions)
Type of expense
2017
2016
Cardinal
Transportation Costs
$
2

$
2

Pine Needle
Gas Storage Costs
2

3

Hardy Storage
Gas Storage Costs
2

2

Total
 
$
6

$
7