Earnings Per Share

6 Months Ended

Jun. 30, 2015

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Computation of Earnings Per Share

	Second Quarter				Six Months
	2015		2014		2015		2014
	(in millions)
Basic earnings per share ("EPS"):
Net income (loss) attributable to AGL	$	297	$	159	$	498	$	201
Less: Distributed and undistributed income (loss) available to nonvested shareholders	0		0		0		0
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	297	$	159	$	498	$	201
Basic shares	150.6		178.4		153.2		180.3
Basic EPS	$	1.97	$	0.89	$	3.25	$	1.12
Diluted EPS:
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	297	$	159	$	498	$	201
Plus: Re-allocation of undistributed income (loss) available to nonvested shareholders of AGL and subsidiaries	0		0		0		—
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, diluted	$	297	$	159	$	498	$	201
Basic shares	150.6		178.4		153.2		180.3
Effect of dilutive securities:
Options and restricted stock awards	1.0		1.1		0.9		1.0
Diluted shares	151.6		179.5		154.1		181.3
Diluted EPS	$	1.96	$	0.89	$	3.23	$	1.11
Potentially dilutive securities excluded from computation of EPS because of antidilutive effect	0.1		1.5		0.4		1.5