Earnings Per Share

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Computation of Earnings Per Share 

	Third Quarter				Nine Months
	2020		2019		2020		2019
	(in millions, except per share amounts)
Basic Earnings Per Share (EPS):
Net income (loss) attributable to AGL	$	86	$	69	$	214	$	265
Less: Distributed and undistributed income (loss) available to nonvested shareholders	—		—		—		—
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	86	$	69	$	214	$	265
Basic shares	83.2		98.2		87.4		100.8
Basic EPS	$	1.03	$	0.71	$	2.45	$	2.63
Diluted EPS:
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	86	$	69	$	214	$	265
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	$	86	$	69	$	214	$	265
Basic shares	83.2		98.2		87.4		100.8
Dilutive securities:
Options and restricted stock awards	0.6		0.7		0.6		0.8
Diluted shares	83.8		98.9		88.0		101.6
Diluted EPS	$	1.02	$	0.70	$	2.43	$	2.61
Potentially dilutive securities excluded from computation of EPS because of antidilutive effect	0.5		—		1.0		—