Earnings Per Share

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Computation of Earnings Per Share 

	First Quarter
	2019		2018
	(in millions, except per share amounts)
Basic Earnings Per Share (EPS):
Net income (loss) attributable to AGL	$	54	$	197
Less: Distributed and undistributed income (loss) available to nonvested shareholders	—		1
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	54	$	196
Basic shares	103.0		115.2
Basic EPS	$	0.52	$	1.71
Diluted EPS:
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	54	$	196
Plus: Re-allocation of undistributed income (loss) available to nonvested shareholders of AGL and subsidiaries	—		—
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, diluted	$	54	$	196
Basic shares	103.0		115.2
Dilutive securities:
Options and restricted stock awards	1.0		1.4
Diluted shares	104.0		116.6
Diluted EPS	$	0.52	$	1.68
Potentially dilutive securities excluded from computation of EPS because of antidilutive effect	—		0.2