Significant Accounting Matters (Tables)

3 Months Ended

Mar. 31, 2018

Basic and Diluted EPS Calculations

	Three Months Ended March 31,
	2018				2017
	(in millions, except per share data)
			$/share				$/share
Earnings Attributable to AEP Common Shareholders	$	454.4			$	592.2
Weighted Average Number of Basic Shares Outstanding	492.3		$	0.92	491.7		$	1.20
Weighted Average Dilutive Effect of Stock-Based Awards	0.8		—		0.3		—
Weighted Average Number of Diluted Shares Outstanding	493.1		$	0.92	492.0		$	1.20

Reconciliation of Cash, Cash Equivalents and Restricted Cash [Table Text Block]

	March 31, 2018
	AEP		AEP Texas		APCo		OPCo
	(in millions)
Cash and Cash Equivalents	$	183.4	$	0.1	$	1.2	$	1.4
Restricted Cash	133.1		107.1		10.1		15.9
Total Cash, Cash Equivalents and Restricted Cash	$	316.5	$	107.2	$	11.3	$	17.3

	December 31, 2017
	AEP		AEP Texas		APCo		OPCo
	(in millions)
Cash and Cash Equivalents	$	214.6	$	2.0	$	2.9	$	3.1
Restricted Cash	198.0		155.2		16.3		26.6
Total Cash, Cash Equivalents and Restricted Cash	$	412.6	$	157.2	$	19.2	$	29.7