Property, Plant And Equipment, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Machinery and equipment	$ 5,941	$ 5,441
Buildings and improvements	3,558	3,232
Land and improvements	413	400
Construction in process	802	688
Total property, plant and equipment	10,714	9,761
Accumulated depreciation	(5,614)	(5,286)
Property, plant and equipment, net	$ 5,100	$ 4,475	[1]
Buildings And Improvements
Property, Plant and Equipment [Line Items]
Depreciable life, maximum, years	50 years
Machinery And Equipment
Property, Plant and Equipment [Line Items]
Depreciable life, maximum, years	30 years

[1] *Prior-period information has been restated for the retrospective application of a change in accounting principle related to the amortization of actuarial gains and losses for our qualified U.S. government pension plans, which we adopted in the fourth quarter of 2020. For further discussion of this change in accounting principle, see Note T to the Consolidated Financial Statements.