Earnings Per Share

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Computation of EPS

	Second Quarter				Six Months
	2017		2016		2017		2016
	(in millions)
Basic EPS:
Net income (loss) attributable to AGL	$	153	$	146	$	470	$	205
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	$	153	$	146	$	470	$	205
Basic shares	121.3		134.0		123.3		135.1
Basic EPS	$	1.26	$	1.09	$	3.81	$	1.52
Diluted EPS:
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	153	$	146	$	470	$	205
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	$	153	$	146	$	470	$	205
Basic shares	121.3		134.0		123.3		135.1
Dilutive securities:
Options and restricted stock awards	1.4		0.8		1.6		0.8
Diluted shares	122.7		134.8		124.9		135.9
Diluted EPS	$	1.24	$	1.09	$	3.76	$	1.51
Potentially dilutive securities excluded from computation of EPS because of antidilutive effect	0.1		0.6		0.1		0.7