14. Employee Benefit Obligations

Net periodic benefit costs disclosed in the tables below for the qualified and non-qualified pension and other post-retirement benefit plans represent the cost of the respective benefit plan to the Duke Energy Registrants for the periods presented. However, portions of the net periodic benefit costs disclosed in the tables below have been capitalized as a component of property, plant and equipment.

Duke Energy

The following table shows the components of the net periodic benefit costs for the Duke Energy U.S. qualified and non-qualified pension plans and other post-retirement benefit plans.


	Three Months Ended March 31, 2012								Three Months Ended March 31, 2011
	Qualified pension plans^(a)			Non- Qualified pension plans		Other Post- Retirement Benefit plans^(b)			Qualified pension plans^(a)			Non- Qualified pension plans		Other Post- Retirement Benefit plans^(b)
	(in millions)
Service cost	$	23		$	1	$	2		$	24		$	—	$	1
Interest cost on projected benefit obligation		61			2		8			58			2		9
Expected return on plan assets		(94	)		—		(4	)		(96	)		—		(4	)
Amortization of prior service cost (credit)		1			—		(2	)		2			1		(2	)
Amortization of net transition liability		—			—		2			—			—		3
Amortization of loss (gain)		24			—		(2	)		19			—		(1	)
Other		1			—		—			4			—		—

Net periodic costs	$	16		$	3	$	4		$	11		$	3	$	6

(a)	Excludes regulatory asset amortization of $3 million and $4 million for the three months ended March 31, 2012 and 2011, respectively, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(b)	Excludes regulatory asset amortization of $2 million for each of the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

Each of the Subsidiary Registrants participate in qualified and non-qualified pension plans and other post-retirement benefit plans sponsored by Duke Energy. The net periodic benefit costs shown in the tables below represent the allocated cost of the respective benefit plan for the periods presented. Additionally, the Subsidiary Registrants are allocated their proportionate share of pension and other post-retirement benefit cost for employees of Duke Energy's shared services affiliate that provide support to the respective Subsidiary Registrant. These allocated amounts are included in the governance and shared services costs for each Subsidiary Registrant discussed in Note 17.

Duke Energy Carolinas


	Three Months Ended March 31, 2012						Three Months Ended March 31, 2011
	Qualified pension plans			Other Post- Retirement Benefit plans			Qualified pension plans			Other Post- Retirement Benefit plans
	(in millions)
Service cost	$	9		$	1		$	9		$	—
Interest cost on projected benefit obligation		23			4			21			4
Expected return on plan assets		(36	)		(3	)		(37	)		(2	)
Amortization of prior service credit		—			(1	)		—			(1	)
Amortization of net transition liability		—			1			—			2
Amortization of loss		11			1			9			1
Other		—			—			2			—

Net periodic costs^(a)	$	7		$	3		$	4		$	4

(a)	Components of net periodic costs for Duke Energy Carolinas' non-qualified pension plans were an insignificant amount for the three months ended March 31, 2012 and 2011.

Duke Energy Ohio


	Three Months Ended March 31, 2012						Three Months Ended March 31, 2011
	Qualified pension plans^(a)			Other Post- Retirement Benefit plans^(b)			Qualified pension plans^(a)			Other Post- Retirement Benefit plans^(b)
	(in millions)
Service cost	$	2		$	—		$	2		$	—
Interest cost on projected benefit obligation		8			1			8			1
Expected return on plan assets		(11	)		—			(11	)		—
Amortization of loss (gain)		2			(1	)		2			(1	)

Net periodic costs^(c)	$	1		$	—		$	1		$	—

(a)	Excludes regulatory asset amortization of $2 million for each of the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(b)	Excludes regulatory asset amortization of an insignificant amount and $1 million for the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(c)	Components of net periodic costs for Duke Energy Ohio's non-qualified pension plans were an insignificant amount for each of the three months ended March 31, 2012 and 2011.

Duke Energy Indiana


	Three Months Ended March 31, 2012					Three Months Ended March 31, 2011
	Qualified pension plans			Other Post- Retirement Benefit plans		Qualified pension plans			Other Post- Retirement Benefit plans
	(in millions)
Service cost	$	2		$	—	$	3		$	—
Interest cost on projected benefit obligation		8			2		7			2
Expected return on plan assets		(12	)		—		(11	)		—
Amortization of prior service cost		1			—		—			—
Amortization of loss		3			—		4			—

Net periodic costs^(a)	$	2		$	2	$	3		$	2

(a)	Components of net periodic costs for Duke Energy Indiana's non-qualified pension plans were an insignificant amount for each of the three months ended March 31, 2012 and 2011.

Employee Savings Plan

Duke Energy sponsors employee savings plans that cover substantially all U.S. employees. Duke Energy made pre-tax employer matching contributions of $28 million and $31 million for the three months ended March 31, 2012 and 2011, respectively.

The Subsidiary Registrants participate in Duke Energy sponsored employee savings plans. The following table shows the respective Subsidiary Registrants' expense related to its proportionate share of pre-tax employer matching contributions.


	Three Months Ended March 31,
	(in millions)
	2012		2011
Duke Energy Carolinas	$	11	$	12
Duke Energy Ohio		1		1
Duke Energy Indiana		2		3

Employee Benefit Obligations

14. Employee Benefit Obligations

Net periodic benefit costs disclosed in the tables below for the qualified and non-qualified pension and other post-retirement benefit plans represent the cost of the respective benefit plan to the Duke Energy Registrants for the periods presented. However, portions of the net periodic benefit costs disclosed in the tables below have been capitalized as a component of property, plant and equipment.

Duke Energy

The following table shows the components of the net periodic benefit costs for the Duke Energy U.S. qualified and non-qualified pension plans and other post-retirement benefit plans.


	Three Months Ended March 31, 2012								Three Months Ended March 31, 2011
	Qualified pension plans^(a)			Non- Qualified pension plans		Other Post- Retirement Benefit plans^(b)			Qualified pension plans^(a)			Non- Qualified pension plans		Other Post- Retirement Benefit plans^(b)
	(in millions)
Service cost	$	23		$	1	$	2		$	24		$	—	$	1
Interest cost on projected benefit obligation		61			2		8			58			2		9
Expected return on plan assets		(94	)		—		(4	)		(96	)		—		(4	)
Amortization of prior service cost (credit)		1			—		(2	)		2			1		(2	)
Amortization of net transition liability		—			—		2			—			—		3
Amortization of loss (gain)		24			—		(2	)		19			—		(1	)
Other		1			—		—			4			—		—

Net periodic costs	$	16		$	3	$	4		$	11		$	3	$	6

(a)	Excludes regulatory asset amortization of $3 million and $4 million for the three months ended March 31, 2012 and 2011, respectively, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(b)	Excludes regulatory asset amortization of $2 million for each of the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

Each of the Subsidiary Registrants participate in qualified and non-qualified pension plans and other post-retirement benefit plans sponsored by Duke Energy. The net periodic benefit costs shown in the tables below represent the allocated cost of the respective benefit plan for the periods presented. Additionally, the Subsidiary Registrants are allocated their proportionate share of pension and other post-retirement benefit cost for employees of Duke Energy's shared services affiliate that provide support to the respective Subsidiary Registrant. These allocated amounts are included in the governance and shared services costs for each Subsidiary Registrant discussed in Note 17.

Duke Energy Carolinas


	Three Months Ended March 31, 2012						Three Months Ended March 31, 2011
	Qualified pension plans			Other Post- Retirement Benefit plans			Qualified pension plans			Other Post- Retirement Benefit plans
	(in millions)
Service cost	$	9		$	1		$	9		$	—
Interest cost on projected benefit obligation		23			4			21			4
Expected return on plan assets		(36	)		(3	)		(37	)		(2	)
Amortization of prior service credit		—			(1	)		—			(1	)
Amortization of net transition liability		—			1			—			2
Amortization of loss		11			1			9			1
Other		—			—			2			—

Net periodic costs^(a)	$	7		$	3		$	4		$	4

(a)	Components of net periodic costs for Duke Energy Carolinas' non-qualified pension plans were an insignificant amount for the three months ended March 31, 2012 and 2011.

Duke Energy Ohio


	Three Months Ended March 31, 2012						Three Months Ended March 31, 2011
	Qualified pension plans^(a)			Other Post- Retirement Benefit plans^(b)			Qualified pension plans^(a)			Other Post- Retirement Benefit plans^(b)
	(in millions)
Service cost	$	2		$	—		$	2		$	—
Interest cost on projected benefit obligation		8			1			8			1
Expected return on plan assets		(11	)		—			(11	)		—
Amortization of loss (gain)		2			(1	)		2			(1	)

Net periodic costs^(c)	$	1		$	—		$	1		$	—

(a)	Excludes regulatory asset amortization of $2 million for each of the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(b)	Excludes regulatory asset amortization of an insignificant amount and $1 million for the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(c)	Components of net periodic costs for Duke Energy Ohio's non-qualified pension plans were an insignificant amount for each of the three months ended March 31, 2012 and 2011.

Duke Energy Indiana


	Three Months Ended March 31, 2012					Three Months Ended March 31, 2011
	Qualified pension plans			Other Post- Retirement Benefit plans		Qualified pension plans			Other Post- Retirement Benefit plans
	(in millions)
Service cost	$	2		$	—	$	3		$	—
Interest cost on projected benefit obligation		8			2		7			2
Expected return on plan assets		(12	)		—		(11	)		—
Amortization of prior service cost		1			—		—			—
Amortization of loss		3			—		4			—

Net periodic costs^(a)	$	2		$	2	$	3		$	2

(a)	Components of net periodic costs for Duke Energy Indiana's non-qualified pension plans were an insignificant amount for each of the three months ended March 31, 2012 and 2011.

Employee Savings Plan

Duke Energy sponsors employee savings plans that cover substantially all U.S. employees. Duke Energy made pre-tax employer matching contributions of $28 million and $31 million for the three months ended March 31, 2012 and 2011, respectively.

The Subsidiary Registrants participate in Duke Energy sponsored employee savings plans. The following table shows the respective Subsidiary Registrants' expense related to its proportionate share of pre-tax employer matching contributions.


	Three Months Ended March 31,
	(in millions)
	2012		2011
Duke Energy Carolinas	$	11	$	12
Duke Energy Ohio		1		1
Duke Energy Indiana		2		3

Employee Benefit Obligations

14. Employee Benefit Obligations

Net periodic benefit costs disclosed in the tables below for the qualified and non-qualified pension and other post-retirement benefit plans represent the cost of the respective benefit plan to the Duke Energy Registrants for the periods presented. However, portions of the net periodic benefit costs disclosed in the tables below have been capitalized as a component of property, plant and equipment.

Duke Energy

The following table shows the components of the net periodic benefit costs for the Duke Energy U.S. qualified and non-qualified pension plans and other post-retirement benefit plans.


	Three Months Ended March 31, 2012								Three Months Ended March 31, 2011
	Qualified pension plans^(a)			Non- Qualified pension plans		Other Post- Retirement Benefit plans^(b)			Qualified pension plans^(a)			Non- Qualified pension plans		Other Post- Retirement Benefit plans^(b)
	(in millions)
Service cost	$	23		$	1	$	2		$	24		$	—	$	1
Interest cost on projected benefit obligation		61			2		8			58			2		9
Expected return on plan assets		(94	)		—		(4	)		(96	)		—		(4	)
Amortization of prior service cost (credit)		1			—		(2	)		2			1		(2	)
Amortization of net transition liability		—			—		2			—			—		3
Amortization of loss (gain)		24			—		(2	)		19			—		(1	)
Other		1			—		—			4			—		—

Net periodic costs	$	16		$	3	$	4		$	11		$	3	$	6

(a)	Excludes regulatory asset amortization of $3 million and $4 million for the three months ended March 31, 2012 and 2011, respectively, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(b)	Excludes regulatory asset amortization of $2 million for each of the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

Each of the Subsidiary Registrants participate in qualified and non-qualified pension plans and other post-retirement benefit plans sponsored by Duke Energy. The net periodic benefit costs shown in the tables below represent the allocated cost of the respective benefit plan for the periods presented. Additionally, the Subsidiary Registrants are allocated their proportionate share of pension and other post-retirement benefit cost for employees of Duke Energy's shared services affiliate that provide support to the respective Subsidiary Registrant. These allocated amounts are included in the governance and shared services costs for each Subsidiary Registrant discussed in Note 17.

Duke Energy Carolinas


	Three Months Ended March 31, 2012						Three Months Ended March 31, 2011
	Qualified pension plans			Other Post- Retirement Benefit plans			Qualified pension plans			Other Post- Retirement Benefit plans
	(in millions)
Service cost	$	9		$	1		$	9		$	—
Interest cost on projected benefit obligation		23			4			21			4
Expected return on plan assets		(36	)		(3	)		(37	)		(2	)
Amortization of prior service credit		—			(1	)		—			(1	)
Amortization of net transition liability		—			1			—			2
Amortization of loss		11			1			9			1
Other		—			—			2			—

Net periodic costs^(a)	$	7		$	3		$	4		$	4

(a)	Components of net periodic costs for Duke Energy Carolinas' non-qualified pension plans were an insignificant amount for the three months ended March 31, 2012 and 2011.

Duke Energy Ohio


	Three Months Ended March 31, 2012						Three Months Ended March 31, 2011
	Qualified pension plans^(a)			Other Post- Retirement Benefit plans^(b)			Qualified pension plans^(a)			Other Post- Retirement Benefit plans^(b)
	(in millions)
Service cost	$	2		$	—		$	2		$	—
Interest cost on projected benefit obligation		8			1			8			1
Expected return on plan assets		(11	)		—			(11	)		—
Amortization of loss (gain)		2			(1	)		2			(1	)

Net periodic costs^(c)	$	1		$	—		$	1		$	—

(a)	Excludes regulatory asset amortization of $2 million for each of the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(b)	Excludes regulatory asset amortization of an insignificant amount and $1 million for the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(c)	Components of net periodic costs for Duke Energy Ohio's non-qualified pension plans were an insignificant amount for each of the three months ended March 31, 2012 and 2011.

Duke Energy Indiana


	Three Months Ended March 31, 2012					Three Months Ended March 31, 2011
	Qualified pension plans			Other Post- Retirement Benefit plans		Qualified pension plans			Other Post- Retirement Benefit plans
	(in millions)
Service cost	$	2		$	—	$	3		$	—
Interest cost on projected benefit obligation		8			2		7			2
Expected return on plan assets		(12	)		—		(11	)		—
Amortization of prior service cost		1			—		—			—
Amortization of loss		3			—		4			—

Net periodic costs^(a)	$	2		$	2	$	3		$	2

(a)	Components of net periodic costs for Duke Energy Indiana's non-qualified pension plans were an insignificant amount for each of the three months ended March 31, 2012 and 2011.

Employee Savings Plan

Duke Energy sponsors employee savings plans that cover substantially all U.S. employees. Duke Energy made pre-tax employer matching contributions of $28 million and $31 million for the three months ended March 31, 2012 and 2011, respectively.

The Subsidiary Registrants participate in Duke Energy sponsored employee savings plans. The following table shows the respective Subsidiary Registrants' expense related to its proportionate share of pre-tax employer matching contributions.


	Three Months Ended March 31,
	(in millions)
	2012		2011
Duke Energy Carolinas	$	11	$	12
Duke Energy Ohio		1		1
Duke Energy Indiana		2		3

Employee Benefit Obligations

14. Employee Benefit Obligations

Net periodic benefit costs disclosed in the tables below for the qualified and non-qualified pension and other post-retirement benefit plans represent the cost of the respective benefit plan to the Duke Energy Registrants for the periods presented. However, portions of the net periodic benefit costs disclosed in the tables below have been capitalized as a component of property, plant and equipment.

Duke Energy

The following table shows the components of the net periodic benefit costs for the Duke Energy U.S. qualified and non-qualified pension plans and other post-retirement benefit plans.


	Three Months Ended March 31, 2012								Three Months Ended March 31, 2011
	Qualified pension plans^(a)			Non- Qualified pension plans		Other Post- Retirement Benefit plans^(b)			Qualified pension plans^(a)			Non- Qualified pension plans		Other Post- Retirement Benefit plans^(b)
	(in millions)
Service cost	$	23		$	1	$	2		$	24		$	—	$	1
Interest cost on projected benefit obligation		61			2		8			58			2		9
Expected return on plan assets		(94	)		—		(4	)		(96	)		—		(4	)
Amortization of prior service cost (credit)		1			—		(2	)		2			1		(2	)
Amortization of net transition liability		—			—		2			—			—		3
Amortization of loss (gain)		24			—		(2	)		19			—		(1	)
Other		1			—		—			4			—		—

Net periodic costs	$	16		$	3	$	4		$	11		$	3	$	6

(a)	Excludes regulatory asset amortization of $3 million and $4 million for the three months ended March 31, 2012 and 2011, respectively, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(b)	Excludes regulatory asset amortization of $2 million for each of the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

Each of the Subsidiary Registrants participate in qualified and non-qualified pension plans and other post-retirement benefit plans sponsored by Duke Energy. The net periodic benefit costs shown in the tables below represent the allocated cost of the respective benefit plan for the periods presented. Additionally, the Subsidiary Registrants are allocated their proportionate share of pension and other post-retirement benefit cost for employees of Duke Energy's shared services affiliate that provide support to the respective Subsidiary Registrant. These allocated amounts are included in the governance and shared services costs for each Subsidiary Registrant discussed in Note 17.

Duke Energy Carolinas


	Three Months Ended March 31, 2012						Three Months Ended March 31, 2011
	Qualified pension plans			Other Post- Retirement Benefit plans			Qualified pension plans			Other Post- Retirement Benefit plans
	(in millions)
Service cost	$	9		$	1		$	9		$	—
Interest cost on projected benefit obligation		23			4			21			4
Expected return on plan assets		(36	)		(3	)		(37	)		(2	)
Amortization of prior service credit		—			(1	)		—			(1	)
Amortization of net transition liability		—			1			—			2
Amortization of loss		11			1			9			1
Other		—			—			2			—

Net periodic costs^(a)	$	7		$	3		$	4		$	4

(a)	Components of net periodic costs for Duke Energy Carolinas' non-qualified pension plans were an insignificant amount for the three months ended March 31, 2012 and 2011.

Duke Energy Ohio


	Three Months Ended March 31, 2012						Three Months Ended March 31, 2011
	Qualified pension plans^(a)			Other Post- Retirement Benefit plans^(b)			Qualified pension plans^(a)			Other Post- Retirement Benefit plans^(b)
	(in millions)
Service cost	$	2		$	—		$	2		$	—
Interest cost on projected benefit obligation		8			1			8			1
Expected return on plan assets		(11	)		—			(11	)		—
Amortization of loss (gain)		2			(1	)		2			(1	)

Net periodic costs^(c)	$	1		$	—		$	1		$	—

(a)	Excludes regulatory asset amortization of $2 million for each of the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(b)	Excludes regulatory asset amortization of an insignificant amount and $1 million for the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(c)	Components of net periodic costs for Duke Energy Ohio's non-qualified pension plans were an insignificant amount for each of the three months ended March 31, 2012 and 2011.

Duke Energy Indiana


	Three Months Ended March 31, 2012					Three Months Ended March 31, 2011
	Qualified pension plans			Other Post- Retirement Benefit plans		Qualified pension plans			Other Post- Retirement Benefit plans
	(in millions)
Service cost	$	2		$	—	$	3		$	—
Interest cost on projected benefit obligation		8			2		7			2
Expected return on plan assets		(12	)		—		(11	)		—
Amortization of prior service cost		1			—		—			—
Amortization of loss		3			—		4			—

Net periodic costs^(a)	$	2		$	2	$	3		$	2

(a)	Components of net periodic costs for Duke Energy Indiana's non-qualified pension plans were an insignificant amount for each of the three months ended March 31, 2012 and 2011.

Employee Savings Plan

Duke Energy sponsors employee savings plans that cover substantially all U.S. employees. Duke Energy made pre-tax employer matching contributions of $28 million and $31 million for the three months ended March 31, 2012 and 2011, respectively.

The Subsidiary Registrants participate in Duke Energy sponsored employee savings plans. The following table shows the respective Subsidiary Registrants' expense related to its proportionate share of pre-tax employer matching contributions.


	Three Months Ended March 31,
	(in millions)
	2012		2011
Duke Energy Carolinas	$	11	$	12
Duke Energy Ohio		1		1
Duke Energy Indiana		2		3

Employee Benefit Obligations

14. Employee Benefit Obligations

Net periodic benefit costs disclosed in the tables below for the qualified and non-qualified pension and other post-retirement benefit plans represent the cost of the respective benefit plan to the Duke Energy Registrants for the periods presented. However, portions of the net periodic benefit costs disclosed in the tables below have been capitalized as a component of property, plant and equipment.

Duke Energy

The following table shows the components of the net periodic benefit costs for the Duke Energy U.S. qualified and non-qualified pension plans and other post-retirement benefit plans.


	Three Months Ended March 31, 2012								Three Months Ended March 31, 2011
	Qualified pension plans^(a)			Non- Qualified pension plans		Other Post- Retirement Benefit plans^(b)			Qualified pension plans^(a)			Non- Qualified pension plans		Other Post- Retirement Benefit plans^(b)
	(in millions)
Service cost	$	23		$	1	$	2		$	24		$	—	$	1
Interest cost on projected benefit obligation		61			2		8			58			2		9
Expected return on plan assets		(94	)		—		(4	)		(96	)		—		(4	)
Amortization of prior service cost (credit)		1			—		(2	)		2			1		(2	)
Amortization of net transition liability		—			—		2			—			—		3
Amortization of loss (gain)		24			—		(2	)		19			—		(1	)
Other		1			—		—			4			—		—

Net periodic costs	$	16		$	3	$	4		$	11		$	3	$	6

(a)	Excludes regulatory asset amortization of $3 million and $4 million for the three months ended March 31, 2012 and 2011, respectively, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(b)	Excludes regulatory asset amortization of $2 million for each of the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

Each of the Subsidiary Registrants participate in qualified and non-qualified pension plans and other post-retirement benefit plans sponsored by Duke Energy. The net periodic benefit costs shown in the tables below represent the allocated cost of the respective benefit plan for the periods presented. Additionally, the Subsidiary Registrants are allocated their proportionate share of pension and other post-retirement benefit cost for employees of Duke Energy's shared services affiliate that provide support to the respective Subsidiary Registrant. These allocated amounts are included in the governance and shared services costs for each Subsidiary Registrant discussed in Note 17.

Duke Energy Carolinas


	Three Months Ended March 31, 2012						Three Months Ended March 31, 2011
	Qualified pension plans			Other Post- Retirement Benefit plans			Qualified pension plans			Other Post- Retirement Benefit plans
	(in millions)
Service cost	$	9		$	1		$	9		$	—
Interest cost on projected benefit obligation		23			4			21			4
Expected return on plan assets		(36	)		(3	)		(37	)		(2	)
Amortization of prior service credit		—			(1	)		—			(1	)
Amortization of net transition liability		—			1			—			2
Amortization of loss		11			1			9			1
Other		—			—			2			—

Net periodic costs^(a)	$	7		$	3		$	4		$	4

(a)	Components of net periodic costs for Duke Energy Carolinas' non-qualified pension plans were an insignificant amount for the three months ended March 31, 2012 and 2011.

Duke Energy Ohio


	Three Months Ended March 31, 2012						Three Months Ended March 31, 2011
	Qualified pension plans^(a)			Other Post- Retirement Benefit plans^(b)			Qualified pension plans^(a)			Other Post- Retirement Benefit plans^(b)
	(in millions)
Service cost	$	2		$	—		$	2		$	—
Interest cost on projected benefit obligation		8			1			8			1
Expected return on plan assets		(11	)		—			(11	)		—
Amortization of loss (gain)		2			(1	)		2			(1	)

Net periodic costs^(c)	$	1		$	—		$	1		$	—

(a)	Excludes regulatory asset amortization of $2 million for each of the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(b)	Excludes regulatory asset amortization of an insignificant amount and $1 million for the three months ended March 31, 2012 and 2011, resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

(c)	Components of net periodic costs for Duke Energy Ohio's non-qualified pension plans were an insignificant amount for each of the three months ended March 31, 2012 and 2011.

Duke Energy Indiana


	Three Months Ended March 31, 2012					Three Months Ended March 31, 2011
	Qualified pension plans			Other Post- Retirement Benefit plans		Qualified pension plans			Other Post- Retirement Benefit plans
	(in millions)
Service cost	$	2		$	—	$	3		$	—
Interest cost on projected benefit obligation		8			2		7			2
Expected return on plan assets		(12	)		—		(11	)		—
Amortization of prior service cost		1			—		—			—
Amortization of loss		3			—		4			—

Net periodic costs^(a)	$	2		$	2	$	3		$	2

(a)	Components of net periodic costs for Duke Energy Indiana's non-qualified pension plans were an insignificant amount for each of the three months ended March 31, 2012 and 2011.

Employee Savings Plan

Duke Energy sponsors employee savings plans that cover substantially all U.S. employees. Duke Energy made pre-tax employer matching contributions of $28 million and $31 million for the three months ended March 31, 2012 and 2011, respectively.

The Subsidiary Registrants participate in Duke Energy sponsored employee savings plans. The following table shows the respective Subsidiary Registrants' expense related to its proportionate share of pre-tax employer matching contributions.


	Three Months Ended March 31,
	(in millions)
	2012		2011
Duke Energy Carolinas	$	11	$	12
Duke Energy Ohio		1		1
Duke Energy Indiana		2		3