Other Income, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Income And Expenses [Abstract]
Gain/(loss) on disposal of operations	$ 379	$ 81	$ (2)
Net periodic pension and postretirement benefit credits	303	304	234
Interest in earnings of associates and other investments	8	6	21
Foreign exchange gain/(loss)	8	3	(27)
Other	3	2
Other income, net	$ 701	$ 396	$ 226