Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2022

AEP


	Pension Plans				OPEB
	Three Months Ended June 30,				Three Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	30.8	$	32.3	$	1.9	$	2.4
Interest Cost	37.1		34.3		7.3		7.6
Expected Return on Plan Assets	(63.3)		(57.4)		(27.5)		(22.8)
Amortization of Prior Service Credit	—		—		(17.9)		(17.7)
Amortization of Net Actuarial Loss	15.7		25.4		—		—
Net Periodic Benefit Cost (Credit)	$	20.3	$	34.6	$	(36.2)	$	(30.5)

	Pension Plans				OPEB
	Six Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	61.6	$	64.6	$	3.7	$	4.8
Interest Cost	74.1		68.6		14.6		15.2
Expected Return on Plan Assets	(126.7)		(114.9)		(55.0)		(45.6)
Amortization of Prior Service Credit	—		—		(35.7)		(35.4)
Amortization of Net Actuarial Loss	31.5		50.8		—		—
Net Periodic Benefit Cost (Credit)	$	40.5	$	69.1	$	(72.4)	$	(61.0)

AEP Texas


	Pension Plans				OPEB
	Three Months Ended June 30,				Three Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	2.8	$	2.9	$	0.1	$	0.1
Interest Cost	3.0		2.8		0.5		0.6
Expected Return on Plan Assets	(5.2)		(4.8)		(2.2)		(1.8)
Amortization of Prior Service Credit	—		—		(1.5)		(1.5)
Amortization of Net Actuarial Loss	1.3		2.0		—		—
Net Periodic Benefit Cost (Credit)	$	1.9	$	2.9	$	(3.1)	$	(2.6)

	Pension Plans				OPEB
	Six Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	5.6	$	5.9	$	0.2	$	0.3
Interest Cost	6.0		5.6		1.1		1.2
Expected Return on Plan Assets	(10.5)		(9.7)		(4.5)		(3.7)
Amortization of Prior Service Credit	—		—		(3.0)		(3.0)
Amortization of Net Actuarial Loss	2.6		4.1		—		—
Net Periodic Benefit Cost (Credit)	$	3.7	$	5.9	$	(6.2)	$	(5.2)

APCo


	Pension Plans				OPEB
	Three Months Ended June 30,				Three Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	2.8	$	2.9	$	0.2	$	0.2
Interest Cost	4.4		4.1		1.1		1.2
Expected Return on Plan Assets	(8.1)		(7.2)		(4.0)		(3.3)
Amortization of Prior Service Credit	—		—		(2.6)		(2.6)
Amortization of Net Actuarial Loss	1.8		3.0		—		—
Net Periodic Benefit Cost (Credit)	$	0.9	$	2.8	$	(5.3)	$	(4.5)

	Pension Plans				OPEB
	Six Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	5.7	$	5.9	$	0.4	$	0.5
Interest Cost	8.8		8.2		2.3		2.4
Expected Return on Plan Assets	(16.2)		(14.5)		(8.1)		(6.7)
Amortization of Prior Service Credit	—		—		(5.2)		(5.2)
Amortization of Net Actuarial Loss	3.6		6.0		—		—
Net Periodic Benefit Cost (Credit)	$	1.9	$	5.6	$	(10.6)	$	(9.0)

I&M


	Pension Plans				OPEB
	Three Months Ended June 30,				Three Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	4.1	$	4.3	$	0.3	$	0.3
Interest Cost	4.2		4.1		0.9		0.9
Expected Return on Plan Assets	(8.1)		(7.2)		(3.5)		(2.8)
Amortization of Prior Service Credit	—		—		(2.5)		(2.4)
Amortization of Net Actuarial Loss	1.7		3.0		—		—
Net Periodic Benefit Cost (Credit)	$	1.9	$	4.2	$	(4.8)	$	(4.0)

	Pension Plans				OPEB
	Six Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	8.1	$	8.7	$	0.5	$	0.6
Interest Cost	8.4		8.1		1.7		1.8
Expected Return on Plan Assets	(16.1)		(14.4)		(6.9)		(5.6)
Amortization of Prior Service Credit	—		—		(4.9)		(4.8)
Amortization of Net Actuarial Loss	3.5		5.9		—		—
Net Periodic Benefit Cost (Credit)	$	3.9	$	8.3	$	(9.6)	$	(8.0)

OPCo


	Pension Plans				OPEB
	Three Months Ended June 30,				Three Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	2.9	$	2.8	$	0.1	$	0.2
Interest Cost	3.2		3.1		0.8		0.8
Expected Return on Plan Assets	(6.2)		(5.5)		(2.9)		(2.5)
Amortization of Prior Service Credit	—		—		(1.8)		(1.8)
Amortization of Net Actuarial Loss	1.4		2.3		—		—
Net Periodic Benefit Cost (Credit)	$	1.3	$	2.7	$	(3.8)	$	(3.3)

	Pension Plans				OPEB
	Six Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	5.6	$	5.7	$	0.3	$	0.4
Interest Cost	6.6		6.2		1.5		1.6
Expected Return on Plan Assets	(12.4)		(11.1)		(5.9)		(4.9)
Amortization of Prior Service Credit	—		—		(3.6)		(3.6)
Amortization of Net Actuarial Loss	2.8		4.5		—		—
Net Periodic Benefit Cost (Credit)	$	2.6	$	5.3	$	(7.7)	$	(6.5)

PSO


	Pension Plans				OPEB
	Three Months Ended June 30,				Three Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	1.8	$	2.1	$	0.1	$	0.1
Interest Cost	1.7		1.6		0.3		0.4
Expected Return on Plan Assets	(3.4)		(3.1)		(1.5)		(1.2)
Amortization of Prior Service Credit	—		—		(1.1)		(1.1)
Amortization of Net Actuarial Loss	0.8		1.2		—		—
Net Periodic Benefit Cost (Credit)	$	0.9	$	1.8	$	(2.2)	$	(1.8)

	Pension Plans				OPEB
	Six Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	3.7	$	4.0	$	0.2	$	0.3
Interest Cost	3.5		3.3		0.7		0.8
Expected Return on Plan Assets	(6.8)		(6.2)		(3.0)		(2.5)
Amortization of Prior Service Credit	—		—		(2.2)		(2.2)
Amortization of Net Actuarial Loss	1.5		2.5		—		—
Net Periodic Benefit Cost (Credit)	$	1.9	$	3.6	$	(4.3)	$	(3.6)

SWEPCo


	Pension Plans				OPEB
	Three Months Ended June 30,				Three Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	2.7	$	2.8	$	0.2	$	0.2
Interest Cost	2.3		2.1		0.4		0.5
Expected Return on Plan Assets	(3.6)		(3.4)		(1.8)		(1.5)
Amortization of Prior Service Credit	—		—		(1.3)		(1.3)
Amortization of Net Actuarial Loss	0.9		1.6		—		—
Net Periodic Benefit Cost (Credit)	$	2.3	$	3.1	$	(2.5)	$	(2.1)

	Pension Plans				OPEB
	Six Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
	(in millions)
Service Cost	$	5.3	$	5.7	$	0.3	$	0.3
Interest Cost	4.6		4.2		0.9		1.0
Expected Return on Plan Assets	(7.3)		(6.8)		(3.7)		(3.0)
Amortization of Prior Service Credit	—		—		(2.6)		(2.6)
Amortization of Net Actuarial Loss	1.9		3.1		—		—
Net Periodic Benefit Cost (Credit)	$	4.5	$	6.2	$	(5.1)	$	(4.3)