Other Operating Expenses, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2019
Other Income and Expenses [Abstract]
Special charges, net	$ 255	$ 16
(Gain) loss on disposal of assets, net	47	(9)
Other operating expenses, net	302	$ 7
Loss Contingency, Damages Awarded, Value	$ 220		$ 151