Earnings Per Share

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Computation of Earnings Per Share

	Third Quarter				Nine Months
	2015		2014		2015		2014
	(in millions)
Basic earnings per share ("EPS"):
Net income (loss) attributable to AGL	$	129	$	355	$	627	$	556
Less: Distributed and undistributed income (loss) available to nonvested shareholders	0		1		0		0
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	129	$	354	$	627	$	556
Basic shares	145.8		168.8		150.7		176.4
Basic EPS	$	0.88	$	2.10	$	4.16	$	3.15
Diluted EPS:
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	129	$	354	$	627	$	556
Plus: Re-allocation of undistributed income (loss) available to nonvested shareholders of AGL and subsidiaries	0		0		0		0
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, diluted	$	129	$	354	$	627	$	556
Basic shares	145.8		168.8		150.7		176.4
Effect of dilutive securities:
Options and restricted stock awards	0.7		0.9		0.9		1.0
Diluted shares	146.5		169.7		151.6		177.4
Diluted EPS	$	0.88	$	2.09	$	4.13	$	3.13
Potentially dilutive securities excluded from computation of EPS because of antidilutive effect	1.3		1.9		0.7		1.6