Earnings Per Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Computation of Earnings Per Share

	First Quarter
	2018		2017
	(in millions)
Basic Earnings Per Share (EPS):
Net income (loss) attributable to AGL	$	197	$	317
Less: Distributed and undistributed income (loss) available to nonvested shareholders	1		0
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	196	$	317
Basic shares	115.2		125.3
Basic EPS	$	1.71	$	2.53
Diluted EPS:
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	196	$	317
Plus: Re-allocation of undistributed income (loss) available to nonvested shareholders of AGL and subsidiaries	0		0
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, diluted	$	196	$	317
Basic shares	115.2		125.3
Dilutive securities:
Options and restricted stock awards	1.4		1.8
Diluted shares	116.6		127.1
Diluted EPS	$	1.68	$	2.49
Potentially dilutive securities excluded from computation of EPS because of antidilutive effect	0.2		0.1