Earnings Per Share

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Computation of Earnings Per Share 

	Third Quarter				Nine Months
	2021		2020		2021		2020
	(in millions, except per share amounts)
Basic Earnings Per Share (EPS):
Net income (loss) attributable to AGL	$	17	$	86	$	126	$	214
Less: Distributed and undistributed income (loss) available to nonvested shareholders	—		—		—		—
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	17	$	86	$	126	$	214
Basic shares	72.7		83.2		74.9		87.4
Basic EPS	$	0.22	$	1.03	$	1.67	$	2.45
Diluted EPS:
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	17	$	86	$	126	$	214
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	$	17	$	86	$	126	$	214
Basic shares	72.7		83.2		74.9		87.4
Dilutive securities:
Options and restricted stock awards	0.9		0.6		0.8		0.6
Diluted shares	73.6		83.8		75.7		88.0
Diluted EPS	$	0.22	$	1.02	$	1.66	$	2.43
Potentially dilutive securities excluded from computation of EPS because of antidilutive effect	—		0.5		0.1		1.0