Earnings Per Share

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Computation of Earnings Per Share

	Second Quarter				Six Months
	2018		2017		2018		2017
	(in millions)
Basic Earnings Per Share (EPS):
Net income (loss) attributable to AGL	$	75	$	153	$	272	$	470
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	$	75	$	153	$	272	$	470
Basic shares	111.7		121.3		113.4		123.3
Basic EPS	$	0.67	$	1.26	$	2.39	$	3.81
Diluted EPS:
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	75	$	153	$	272	$	470
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	$	75	$	153	$	272	$	470
Basic shares	111.7		121.3		113.4		123.3
Dilutive securities:
Options and restricted stock awards	1.2		1.4		1.4		1.6
Diluted shares	112.9		122.7		114.8		124.9
Diluted EPS	$	0.67	$	1.24	$	2.37	$	3.76
Potentially dilutive securities excluded from computation of EPS because of antidilutive effect	0.1		0.1		0.2		0.1