(Loss)/Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Schedule of computation of basic and diluted (loss)/earnings per share

The following table shows our computation of basic and diluted (loss)/earnings per share:

Basic and diluted (loss)/earnings per share
	Year Ended December 31,
(in millions, except per share data)	2020		2019		2018
Net (loss)/income	$	(12,385)	$	4,767	$	3,935
Basic weighted average shares outstanding	636		651		691
Dilutive effect of share-based awards	—		2		3
Diluted weighted average shares outstanding	636		653		694
Basic (loss)/earnings per share	$	(19.49)	$	7.32	$	5.69
Diluted (loss)/earnings per share	$	(19.49)	$	7.30	$	5.67