Earnings Per Share and Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2021

Stockholders' Equity Note [Abstract]

Calculation of Basic and Diluted EPS

The following table presents the calculation of basic and diluted net income (loss) attributable to common stockholders per share:

	Three months ended September 30,				Nine months ended September 30,
millions except share and per-share amounts	2021		2020		2021		2020
Net income (loss) from continuing operations	$	830	$	(3,655)	$	1,229	$	(12,384)
Income (loss) from discontinued operations	(2)		80		(444)		(1,335)
Net income (loss)	828		(3,575)		785		(13,719)
Less: Preferred stock dividends	(200)		(203)		(600)		(644)
Net income (loss) attributable to common stockholders	$	628	$	(3,778)	$	185	$	(14,363)
Less: Net income allocated to participating securities	(5)		—		(1)		—
Net income (loss), net of participating securities	623		(3,778)		184		(14,363)
Weighted-average number of basic shares	935.4		929.3		934.4		913.9
Basic income (loss) per common share	$	0.67	$	(4.07)	$	0.20	$	(15.72)
Net income (loss), net of participating securities	$	623	$	(3,778)	$	184	$	(14,363)
Weighted-average number of basic shares	935.4		929.3		934.4		913.9
Dilutive securities	22.3		—		19.8		—
Dilutive effect of potentially dilutive securities	957.7		929.3		954.2		913.9
Diluted income (loss) per common share	$	0.65	$	(4.07)	$	0.19	$	(15.72)