Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2022

Earnings Per Share [Abstract]

Schedule of Computation of Basic and Diluted Earnings Per Share

Computation of Earnings Per Share 

	Second Quarter				Six Months
	2022		2021		2022		2021
	(in millions, except per share amounts)
Basic Earnings Per Share (EPS):
Net income (loss) attributable to AGL	$	(47)	$	98	$	19	$	109
Less: Distributed and undistributed income (loss) available to nonvested shareholders	—		—		—		—
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	(47)	$	98	$	19	$	109
Basic shares	63.8		75.2		65.0		75.9
Basic EPS	$	(0.74)	$	1.31	$	0.29	$	1.44
Diluted EPS:
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	(47)	$	98	$	19	$	109
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	$	(47)	$	98	$	19	$	109
Basic shares	63.8		75.2		65.0		75.9
Dilutive securities:
Options and restricted stock awards	—		0.8		1.2		0.8
Diluted shares	63.8		76.0		66.2		76.7
Diluted EPS	$	(0.74)	$	1.29	$	0.29	$	1.42
Potentially dilutive securities excluded from computation of EPS because of antidilutive effect	2.1		—		1.2		0.2

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

Computation of Earnings Per Share 

	Second Quarter				Six Months
	2022		2021		2022		2021
	(in millions, except per share amounts)
Basic Earnings Per Share (EPS):
Net income (loss) attributable to AGL	$	(47)	$	98	$	19	$	109
Less: Distributed and undistributed income (loss) available to nonvested shareholders	—		—		—		—
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	(47)	$	98	$	19	$	109
Basic shares	63.8		75.2		65.0		75.9
Basic EPS	$	(0.74)	$	1.31	$	0.29	$	1.44
Diluted EPS:
Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries, basic	$	(47)	$	98	$	19	$	109
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	$	(47)	$	98	$	19	$	109
Basic shares	63.8		75.2		65.0		75.9
Dilutive securities:
Options and restricted stock awards	—		0.8		1.2		0.8
Diluted shares	63.8		76.0		66.2		76.7
Diluted EPS	$	(0.74)	$	1.29	$	0.29	$	1.42
Potentially dilutive securities excluded from computation of EPS because of antidilutive effect	2.1		—		1.2		0.2