AEP

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2018



	Cash Flow Hedges
	Commodity			Interest Rate			Securities Available for Sale			Pension and OPEB			Total
	(in millions)
Balance in AOCI as of December 31, 2017	$	(28.4	)	$	(13.0	)	$	11.9		$	(38.3	)	$	(67.8	)
Change in Fair Value Recognized in AOCI	12.8			—			—			—			12.8
Amount of (Gain) Loss Reclassified from AOCI
Purchased Electricity for Resale	(13.1		)	—			—			—			(13.1		)
Interest Expense	—			0.3			—			—			0.3
Amortization of Prior Service Cost (Credit)	—			—			—			(5.0		)	(5.0		)
Amortization of Actuarial (Gains)/Losses	—			—			—			3.2			3.2
Reclassifications from AOCI, before Income Tax (Expense) Credit	(13.1		)	0.3			—			(1.8		)	(14.6		)
Income Tax (Expense) Credit	(2.8		)	0.1			—			(0.4		)	(3.1		)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(10.3		)	0.2			—			(1.4		)	(11.5		)
Net Current Period Other Comprehensive Income (Loss)	2.5			0.2			—			(1.4		)	1.3
ASU 2018-02 Adoption (a)	(6.1		)	(2.7		)	—			(8.2		)	(17.0		)
ASU 2016-01 Adoption (a)	—			—			(11.9		)	—			(11.9		)
Balance in AOCI as of March 31, 2018	$	(32.0	)	$	(15.5	)	$	—		$	(47.9	)	$	(95.4	)


(a)	See Note 2 - New Accounting Pronouncements for additional information.

AEP

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2017



	Cash Flow Hedges
	Commodity			Interest Rate			Securities Available for Sale		Pension and OPEB			Total
	(in millions)
Balance in AOCI as of December 31, 2016	$	(23.1	)	$	(15.7	)	$	8.4	$	(125.9	)	$	(156.3	)
Change in Fair Value Recognized in AOCI	(21.8		)	—			1.2		—			(20.6		)
Amount of (Gain) Loss Reclassified from AOCI
Generation & Marketing Revenues	(4.7		)	—			—		—			(4.7		)
Purchased Electricity for Resale	12.8			—			—		—			12.8
Interest Expense	—			0.5			—		—			0.5
Amortization of Prior Service Cost (Credit)	—			—			—		(4.9		)	(4.9		)
Amortization of Actuarial (Gains)/Losses	—			—			—		5.3			5.3
Reclassifications from AOCI, before Income Tax (Expense) Credit	8.1			0.5			—		0.4			9.0
Income Tax (Expense) Credit	2.8			0.1			—		0.2			3.1
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	5.3			0.4			—		0.2			5.9
Net Current Period Other Comprehensive Income (Loss)	(16.5		)	0.4			1.2		0.2			(14.7		)
Balance in AOCI as of March 31, 2017	$	(39.6	)	$	(15.3	)	$	9.6	$	(125.7	)	$	(171.0	)

AEP Texas

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2018




		Cash Flow Hedge - Interest Rate			Pension and OPEB			Total
	(in millions)
Balance in AOCI as of December 31, 2017		$	(4.5	)	$	(8.1	)	$	(12.6	)
Change in Fair Value Recognized in AOCI		—			—			—
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense		0.3			—			0.3
Amortization of Prior Service Cost (Credit)		—			—			—
Amortization of Actuarial (Gains)/Losses		—			0.1			0.1
Reclassifications from AOCI, before Income Tax (Expense) Credit		0.3			0.1			0.4
Income Tax (Expense) Credit		0.1			—			0.1
Reclassifications from AOCI, Net of Income Tax (Expense) Credit		0.2			0.1			0.3
Net Current Period Other Comprehensive Income (Loss)		0.2			0.1			0.3
ASU 2018-02 Adoption (a)		(0.9		)	(1.8		)	(2.7		)
Balance in AOCI as of March 31, 2018		$	(5.2	)	$	(9.8	)	$	(15.0	)


(a)	See Note 2 - New Accounting Pronouncements for additional information.

AEP Texas

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2017




		Cash Flow Hedge - Interest Rate			Pension and OPEB			Total
	(in millions)
Balance in AOCI as of December 31, 2016		$	(5.4	)	$	(9.5	)	$	(14.9	)
Change in Fair Value Recognized in AOCI		—			—			—
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense		0.3			—			0.3
Amortization of Actuarial (Gains)/Losses		—			0.1			0.1
Reclassifications from AOCI, before Income Tax (Expense) Credit		0.3			0.1			0.4
Income Tax (Expense) Credit		0.1			—			0.1
Reclassifications from AOCI, Net of Income Tax (Expense) Credit		0.2			0.1			0.3
Net Current Period Other Comprehensive Income (Loss)		0.2			0.1			0.3
Balance in AOCI as of March 31, 2017		$	(5.2	)	$	(9.4	)	$	(14.6	)

APCo

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2018



	Cash Flow Hedges
	Commodity			Interest Rate			Pension and OPEB			Total
	(in millions)
Balance in AOCI as of December 31, 2017	$	—		$	2.2		$	(0.9	)	$	1.3
Change in Fair Value Recognized in AOCI	(0.7		)	—			—			(0.7		)
Amount of (Gain) Loss Reclassified from AOCI
Purchased Electricity for Resale	0.9			—			—			0.9
Interest Expense	—			(0.3		)	—			(0.3		)
Amortization of Prior Service Cost (Credit)	—			—			(1.3		)	(1.3		)
Amortization of Actuarial (Gains)/Losses	—			—			0.3			0.3
Reclassifications from AOCI, before Income Tax (Expense) Credit	0.9			(0.3		)	(1.0		)	(0.4		)
Income Tax (Expense) Credit	0.2			(0.1		)	(0.2		)	(0.1		)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0.7			(0.2		)	(0.8		)	(0.3		)
Net Current Period Other Comprehensive Income (Loss)	—			(0.2		)	(0.8		)	(1.0		)
ASU 2018-02 Adoption (a)	—			0.5			(0.2		)	0.3
Balance in AOCI as of March 31, 2018	$	—		$	2.5		$	(1.9	)	$	0.6


(a)	See Note 2 - New Accounting Pronouncements for additional information.

APCo

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2017




	Cash Flow Hedge - Interest Rate			Pension and OPEB			Total
	(in millions)
Balance in AOCI as of December 31, 2016	$	2.9		$	(11.3	)	$	(8.4	)
Change in Fair Value Recognized in AOCI	—			—			—
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense	(0.3		)	—			(0.3		)
Amortization of Prior Service Cost (Credit)	—			(1.3		)	(1.3		)
Amortization of Actuarial (Gains)/Losses	—			0.8			0.8
Reclassifications from AOCI, before Income Tax (Expense) Credit	(0.3		)	(0.5		)	(0.8		)
Income Tax (Expense) Credit	(0.1		)	(0.2		)	(0.3		)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(0.2		)	(0.3		)	(0.5		)
Net Current Period Other Comprehensive Income (Loss)	(0.2		)	(0.3		)	(0.5		)
Balance in AOCI as of March 31, 2017	$	2.7		$	(11.6	)	$	(8.9	)

I&M

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2018




	Cash Flow Hedge - Interest Rate			Pension and OPEB			Total
	(in millions)
Balance in AOCI as of December 31, 2017	$	(10.7	)	$	(1.4	)	$	(12.1	)
Change in Fair Value Recognized in AOCI	—			—			—
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense	0.5			—			0.5
Amortization of Prior Service Cost (Credit)	—			(0.2		)	(0.2		)
Amortization of Actuarial (Gains)/Losses	—			0.2			0.2
Reclassifications from AOCI, before Income Tax (Expense) Credit	0.5			—			0.5
Income Tax (Expense) Credit	0.1			—			0.1
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0.4			—			0.4
Net Current Period Other Comprehensive Income (Loss)	0.4			—			0.4
ASU 2018-02 Adoption (a)	(2.4		)	(0.3		)	(2.7		)
Balance in AOCI as of March 31, 2018	$	(12.7	)	$	(1.7	)	$	(14.4	)


(a)	See Note 2 - New Accounting Pronouncements for additional information.

I&M

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2017




	Cash Flow Hedge - Interest Rate			Pension and OPEB			Total
	(in millions)
Balance in AOCI as of December 31, 2016	$	(12.0	)	$	(4.2	)	$	(16.2	)
Change in Fair Value Recognized in AOCI	—			—			—
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense	0.5			—			0.5
Amortization of Prior Service Cost (Credit)	—			(0.2		)	(0.2		)
Amortization of Actuarial (Gains)/Losses	—			0.2			0.2
Reclassifications from AOCI, before Income Tax (Expense) Credit	0.5			—			0.5
Income Tax (Expense) Credit	0.2			—			0.2
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0.3			—			0.3
Net Current Period Other Comprehensive Income (Loss)	0.3			—			0.3
Balance in AOCI as of March 31, 2017	$	(11.7	)	$	(4.2	)	$	(15.9	)

OPCo

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2018




	Cash Flow Hedge - Interest Rate
	(in millions)
Balance in AOCI as of December 31, 2017	$	1.9
Change in Fair Value Recognized in AOCI	—
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense	(0.4		)
Reclassifications from AOCI, before Income Tax (Expense) Credit	(0.4		)
Income Tax (Expense) Credit	(0.1		)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(0.3		)
Net Current Period Other Comprehensive Income (Loss)	(0.3		)
ASU 2018-02 Adoption (a)	0.4
Balance in AOCI as of March 31, 2018	$	2.0


(a)	See Note 2 - New Accounting Pronouncements for additional information.

OPCo

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2017




		Cash Flow Hedge - Interest Rate
	(in millions)
Balance in AOCI as of December 31, 2016		$	3.0
Change in Fair Value Recognized in AOCI		—
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense		(0.4		)
Reclassifications from AOCI, before Income Tax (Expense) Credit		(0.4		)
Income Tax (Expense) Credit		(0.2		)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit		(0.2		)
Net Current Period Other Comprehensive Income (Loss)		(0.2		)
Balance in AOCI as of March 31, 2017		$	2.8

PSO

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2018




	Cash Flow Hedge - Interest Rate
	(in millions)
Balance in AOCI as of December 31, 2017	$	2.6
Change in Fair Value Recognized in AOCI	—
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense	(0.3		)
Reclassifications from AOCI, before Income Tax (Expense) Credit	(0.3		)
Income Tax (Expense) Credit	(0.1		)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(0.2		)
Net Current Period Other Comprehensive Income (Loss)	(0.2		)
ASU 2018-02 Adoption (a)	0.5
Balance in AOCI as of March 31, 2018	$	2.9


(a)	See Note 2 - New Accounting Pronouncements for additional information.

PSO

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2017




	Cash Flow Hedge - Interest Rate
	(in millions)
Balance in AOCI as of December 31, 2016	$	3.4
Change in Fair Value Recognized in AOCI	—
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense	(0.3		)
Reclassifications from AOCI, before Income Tax (Expense) Credit	(0.3		)
Income Tax (Expense) Credit	(0.1		)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(0.2		)
Net Current Period Other Comprehensive Income (Loss)	(0.2		)
Balance in AOCI as of March 31, 2017	$	3.2

SWEPCo

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2018




	Cash Flow Hedge - Interest Rate			Pension and OPEB			Total
	(in millions)
Balance in AOCI as of December 31, 2017	$	(6.0	)	$	2.0		$	(4.0	)
Change in Fair Value Recognized in AOCI	—			—			—
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense	0.5			—			0.5
Amortization of Prior Service Cost (Credit)	—			(0.5		)	(0.5		)
Amortization of Actuarial (Gains)/Losses	—			0.1			0.1
Reclassifications from AOCI, before Income Tax (Expense) Credit	0.5			(0.4		)	0.1
Income Tax (Expense) Credit	0.1			(0.1		)	—
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0.4			(0.3		)	0.1
Net Current Period Other Comprehensive Income (Loss)	0.4			(0.3		)	0.1
ASU 2018-02 Adoption (a)	(1.3		)	0.4			(0.9		)
Balance in AOCI as of March 31, 2018	$	(6.9	)	$	2.1		$	(4.8	)


(a)	See Note 2 - New Accounting Pronouncements for additional information.

SWEPCo

Changes in Accumulated Other Comprehensive Income (Loss) by Component

For the Three Months Ended March 31, 2017




	Cash Flow Hedge - Interest Rate			Pension and OPEB			Total
	(in millions)
Balance in AOCI as of December 31, 2016	$	(7.4	)	$	(2.0	)	$	(9.4	)
Change in Fair Value Recognized in AOCI	—			—			—
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense	0.7			—			0.7
Amortization of Prior Service Cost (Credit)	—			(0.5		)	(0.5		)
Amortization of Actuarial (Gains)/Losses	—			0.2			0.2
Reclassifications from AOCI, before Income Tax (Expense) Credit	0.7			(0.3		)	0.4
Income Tax (Expense) Credit	0.2			(0.1		)	0.1
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0.5			(0.2		)	0.3
Net Current Period Other Comprehensive Income (Loss)	0.5			(0.2		)	0.3
Balance in AOCI as of March 31, 2017	$	(6.9	)	$	(2.2	)	$	(9.1	)