Earnings Per Share and Stockholders' Equity (Tables)

6 Months Ended

Jun. 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 June 30,				Six months ended June 30,
millions except share and per-share amounts	2021		2020		2021		2020
Net income (loss) from continuing operations	$	100	$	(6,716)	$	399	$	(8,729)
Income (loss) from discontinued operations	3		(1,415)		(442)		(1,415)
Net income (loss)	103		(8,131)		(43)		(10,144)
Less: Preferred stock dividends	(200)		(222)		(400)		(441)
Net loss attributable to common stockholders	$	(97)	$	(8,353)	$	(443)	$	(10,585)
Weighted-average number of basic shares	934.2		915.5		933.8		906.2
Basic loss per common share	$	(0.10)	$	(9.12)	$	(0.47)	$	(11.68)
Net loss attributable to common stockholders	$	(97)	$	(8,353)	$	(443)	$	(10,585)
Weighted-average number of basic shares	934.2		915.5		933.8		906.2
Dilutive securities	—		—		—		—
Total diluted weighted-average common shares	934.2		915.5		933.8		906.2
Diluted loss per common share	$	(0.10)	$	(9.12)	$	(0.47)	$	(11.68)