Significant Accounting Matters (Tables)

9 Months Ended

Sep. 30, 2017

Basic and Diluted EPS Calculations

	Three Months Ended September 30,
	2017					2016
	(in millions, except per share data)
			$/share						$/share
Income (Loss) from Continuing Operations	$	556.7				$	(764.2	)
Less: Net Income Attributable to Noncontrolling Interests	12.0					1.6
Earnings (Loss) Attributable to AEP Common Shareholders from Continuing Operations	$	544.7				$	(765.8	)
Weighted Average Number of Basic Shares Outstanding	491.8		$	1.11		491.7			$	(1.56	)
Weighted Average Dilutive Effect of Stock-Based Awards	1.2		(0.01		)	0.1			—
Weighted Average Number of Diluted Shares Outstanding	493.0		$	1.10		491.8			$	(1.56	)

	Nine Months Ended September 30,
	2017				2016
	(in millions, except per share data)
			$/share				$/share
Income from Continuing Operations	$	1,527.1			$	245.3
Less: Net Income Attributable to Noncontrolling Interests	15.2				5.3
Earnings Attributable to AEP Common Shareholders from Continuing Operations	$	1,511.9			$	240.0
Weighted Average Number of Basic Shares Outstanding	491.8		$	3.07	491.4		$	0.49
Weighted Average Dilutive Effect of Stock-Based Awards	0.6		—		0.2		—
Weighted Average Number of Diluted Shares Outstanding	492.4		$	3.07	491.6		$	0.49

Supplementary Information [Text Block]

	Nine Months Ended September 30,
Cash Flow Information	2017			2016
	(in millions)
Cash Paid (Received) for:
Interest, Net of Capitalized Amounts	$	613.8		$	637.0
Income Taxes, Net	(6.8		)	32.2
Noncash Investing and Financing Activities:
Acquisitions Under Capital Leases	44.5			65.8
Construction Expenditures Included in Current Liabilities as of September 30,	791.6			604.8
Construction Expenditures Included in Noncurrent Liabilities as of September 30,	71.8			—
Acquisition of Nuclear Fuel Included in Current Liabilities as of September 30,	0.6			0.3
Expected Reimbursement for Spent Nuclear Fuel Dry Cask Storage	2.8			—