Business Segments (Tables)

3 Months Ended

Mar. 31, 2018

Reportable Segment Information

	Three Months Ended March 31, 2018
	Vertically Integrated Utilities		Transmission and Distribution Utilities		AEP Transmission Holdco		Generation & Marketing		Corporate and Other (a)			Reconciling Adjustments			Consolidated
	(in millions)
Revenues from:
External Customers	$	2,381.5	$	1,141.2	$	41.1	$	477.5	$	7.0		$	—		$	4,048.3
Other Operating Segments	26.5		21.2		164.4		27.6		17.0			(256.7		)	—
Total Revenues	$	2,408.0	$	1,162.4	$	205.5	$	505.1	$	24.0		$	(256.7	)	$	4,048.3
Net Income (Loss)	$	232.8	$	125.4	$	104.8	$	18.1	$	(24.4	)	$	—		$	456.7
	Three Months Ended March 31, 2017
	Vertically Integrated Utilities		Transmission and Distribution Utilities		AEP Transmission Holdco		Generation & Marketing		Corporate and Other (a)			Reconciling Adjustments			Consolidated
	(in millions)
Revenues from:
External Customers	$	2,269.8	$	1,066.4	$	27.7	$	558.8	$	10.6		$	—		$	3,933.3
Other Operating Segments	20.6		20.0		128.4		32.6		15.9			(217.5		)	—
Total Revenues	$	2,290.4	$	1,086.4	$	156.1	$	591.4	$	26.5		$	(217.5	)	$	3,933.3
Net Income (Loss)	$	220.5	$	119.1	$	72.8	$	186.2	$	(4.4	)	$	—		$	594.2

	March 31, 2018
	Vertically Integrated Utilities		Transmission and Distribution Utilities		AEP Transmission Holdco		Generation & Marketing			Corporate and Other (a)			Reconciling Adjustments				Consolidated
	(in millions)
Total Property, Plant and Equipment	$	43,749.8	$	16,790.4	$	7,446.6	$	786.9		$	377.7		$	(355.1	)	(b)	$	68,796.3
Accumulated Depreciation and Amortization	13,355.3		3,809.8		200.1		70.1			182.9			(187.0		)	(b)	17,431.2
Total Property Plant and Equipment - Net	$	30,394.5	$	12,980.6	$	7,246.5	$	716.8		$	194.8		$	(168.1	)	(b)	$	51,365.1
Total Assets	$	37,913.3	$	16,272.6	$	8,340.5	$	2,123.7		$	4,552.9	(c)	$	(3,593.5	)	(b) (d)	$	65,609.5
Long-term Debt Due Within One Year:
Nonaffiliated	$	1,893.7	$	670.6	$	50.0	$	0.1		$	1.7		$	—			$	2,616.1
Long-term Debt:
Affiliated	50.0		—		—		32.2			—			(82.2		)		—
Nonaffiliated	9,969.2		4,972.4		2,635.0		(0.3		)	1,268.6			—				18,844.9
Total Long-term Debt	$	11,912.9	$	5,643.0	$	2,685.0	$	32.0		$	1,270.3		$	(82.2	)		$	21,461.0
	December 31, 2017
	Vertically Integrated Utilities		Transmission and Distribution Utilities		AEP Transmission Holdco		Generation & Marketing			Corporate and Other (a)			Reconciling Adjustments				Consolidated
	(in millions)
Total Property, Plant and Equipment	$	43,294.4	$	16,371.2	$	7,110.2	$	644.6		$	374.5		$	(366.4	)	(b)	$	67,428.5
Accumulated Depreciation and Amortization	13,153.4		3,768.3		176.6		75.0			180.6			(186.9		)	(b)	17,167.0
Total Property Plant and Equipment - Net	$	30,141.0	$	12,602.9	$	6,933.6	$	569.6		$	193.9		$	(179.5	)	(b)	$	50,261.5
Total Assets	$	37,579.7	$	16,060.7	$	8,141.8	$	2,009.8		$	3,959.1	(c)	$	(3,022.0	)	(b) (d)	$	64,729.1
Long-term Debt Due Within One Year:
Nonaffiliated	$	1,038.1	$	663.1	$	50.0	$	—		$	2.5		$	—			$	1,753.7
Long-term Debt:
Affiliated	50.0		—		—		32.2			—			(82.2		)		—
Nonaffiliated	10,801.4		4,705.4		2,631.3		(0.3		)	1,281.8			—				19,419.6
Total Long-term Debt	$	11,889.5	$	5,368.5	$	2,681.3	$	31.9		$	1,284.3		$	(82.2	)		$	21,173.3

(a) Corporate and Other primarily includes the purchasing of receivables from certain AEP utility subsidiaries. This segment also includes Parent’s guarantee revenue received from affiliates, investment income, interest income and interest expense and other nonallocated costs.

(b) Includes eliminations due to an intercompany capital lease.

(c) Includes elimination of AEP Parent’s investments in wholly-owned subsidiary companies.

(d) Reconciling Adjustments for Total Assets primarily include elimination of intercompany advances to affiliates and intercompany accounts receivable.

	Three Months Ended March 31, 2018
	State Transcos		AEPTCo Parent				Reconciling Adjustments				AEPTCo Consolidated
	(in millions)
Revenues from:
External Customers	$	31.3	$	—			$	—			$	31.3
Sales to AEP Affiliates	162.1		—				—				162.1
Other Revenues	0.1		—				—				0.1
Total Revenues	$	193.5	$	—			$	—			$	193.5
Interest Income	$	0.2	$	25.0			$	(24.8	)	(a)	$	0.4
Interest Expense	19.9		24.8				(24.8		)	(a)	19.9
Income Tax Expense	22.3		0.2				—				22.5
Net Income (Loss)	$	86.0	$	(0.1	)	(b)	$	—			$	85.9

	Three Months Ended March 31, 2017
	State Transcos		AEPTCo Parent			Reconciling Adjustments				AEPTCo Consolidated
	(in millions)
Revenues from:
External Customers	$	19.2	$	—		$	—			$	19.2
Sales to AEP Affiliates	133.4		—			—				133.4
Other Revenues	0.1		—			—				0.1
Total Revenues	$	152.7	$	—		$	—			$	152.7
Interest Income	$	0.1	$	19.1		$	(19.0	)	(a)	$	0.2
Interest Expense	15.8		19.2			(19.0		)	(a)	16.0
Income Tax Expense	28.4		0.1			—				28.5
Net Income	$	56.8	$	0.2	(b)	$	—			$	57.0

	March 31, 2018
	State Transcos		AEPTCo Parent			Reconciling Adjustments				AEPTCo Consolidated
	(in millions)
Total Transmission Property	$	7,108.0	$	—		$	—			$	7,108.0
Accumulated Depreciation and Amortization	192.7		—			—				192.7
Total Transmission Property – Net	$	6,915.3	$	—		$	—			$	6,915.3
Notes Receivable - Affiliated	$	—	$	2,550.7		$	(2,550.7	)	(c)	$	—
Total Assets	$	7,220.0	$	2,637.3	(d)	$	(2,617.4	)	(e)	$	7,239.9
Total Long-term Debt	$	2,575.0	$	2,550.7		$	(2,575.0	)	(c)	$	2,550.7

	December 31, 2017
	State Transcos		AEPTCo Parent			Reconciling Adjustments				AEPTCo Consolidated
	(in millions)
Total Transmission Property	$	6,780.2	$	—		$	—			$	6,780.2
Accumulated Depreciation and Amortization	170.4		—			—				170.4
Total Transmission Property – Net	$	6,609.8	$	—		$	—			$	6,609.8
Notes Receivable - Affiliated	$	—	$	2,550.4		$	(2,550.4	)	(c)	$	—
Total Assets	$	7,072.9	$	2,590.1	(d)	$	(2,594.9	)	(e)	$	7,068.1
Total Long-term Debt	$	2,575.0	$	2,550.4		$	(2,575.0	)	(c)	$	2,550.4

(a) Elimination of intercompany interest income/interest expense on affiliated debt arrangement.

(b) Includes the elimination of AEPTCo Parent’s equity earnings in the State Transcos.

(c) Elimination of intercompany debt.

(d) Includes the elimination of AEPTCo Parent’s investments in State Transcos.

(e) Primarily relates to the elimination of Notes Receivable from the State Transcos.