Variable Interest Entities (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2024

Dec. 31, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Consolidated Assets And Liabilities Of Variable Interest Entities

March 31, 2024
	Consolidated VIEs
	SWEPCo Sabine		I&M DCC Fuel		AEP Texas Transition Funding			AEP Texas Restoration Funding			APCo Appalachian Consumer Rate Relief Funding			AEP Credit		Protected Cell of EIS		Transource Energy
	(in millions)
ASSETS
Current Assets	$	5.1	$	75.3	$	40.1		$	20.4		$	6.3		$	1,165.3	$	211.6	$	31.7
Net Property, Plant and Equipment	—		129.5		—			—			—			—		—		536.9
Other Noncurrent Assets	140.1		63.5		55.3		(a)	139.7		(b)	130.3		(c)	10.2		—		9.3
Total Assets	$	145.2	$	268.3	$	95.4		$	160.1		$	136.6		$	1,175.5	$	211.6	$	577.9
LIABILITIES AND EQUITY
Current Liabilities	$	22.8	$	75.1	$	76.3		$	36.4		$	29.0		$	1,113.7	$	52.3	$	22.5
Noncurrent Liabilities	122.1		193.2		14.7			122.4			105.7			1.0		90.8		258.8
Equity	0.3		—		4.4			1.3			1.9			60.8		68.5		296.6
Total Liabilities and Equity	$	145.2	$	268.3	$	95.4		$	160.1		$	136.6		$	1,175.5	$	211.6	$	577.9

(a)Includes an intercompany item eliminated in consolidation of $6 million.

(b)Includes an intercompany item eliminated in consolidation of $6 million.

(c)Includes an intercompany item eliminated in consolidation of $2 million.

December 31, 2023
	Consolidated VIEs
	SWEPCo Sabine		I&M DCC Fuel		AEP Texas Transition Funding			AEP Texas Restoration Funding			APCo Appalachian Consumer Rate Relief Funding			AEP Credit		Protected Cell of EIS		Transource Energy
	(in millions)
ASSETS
Current Assets	$	4.2	$	81.9	$	25.5		$	27.5		$	13.3		$	1,208.8	$	205.3	$	36.9
Net Property, Plant and Equipment	—		153.8		—			—			—			—		—		533.4
Other Noncurrent Assets	150.7		81.7		71.4		(a)	145.6		(b)	138.2		(c)	9.6		—		5.1
Total Assets	$	154.9	$	317.4	$	96.9		$	173.1		$	151.5		$	1,218.4	$	205.3	$	575.4
LIABILITIES AND EQUITY
Current Liabilities	$	19.9	$	81.7	$	75.5		$	36.8		$	29.9		$	1,155.0	$	49.2	$	45.3
Noncurrent Liabilities	134.8		235.7		17.0			135.1			119.7			0.9		91.7		241.5
Equity	0.2		—		4.4			1.2			1.9			62.5		64.4		288.6
Total Liabilities and Equity	$	154.9	$	317.4	$	96.9		$	173.1		$	151.5		$	1,218.4	$	205.3	$	575.4

(a)Includes an intercompany item eliminated in consolidation of $8 million.

(b)Includes an intercompany item eliminated in consolidation of $6 million.

(c)Includes an intercompany item eliminated in consolidation of $2 million.