Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Property, plant and equipment
Property, plant and equipment, gross	$ 9,197		$ 8,913
Accumulated depreciation	(3,627)		(3,562)
Net property, plant and equipment	5,570		5,351
Depreciation expense	123	$ 124
Land
Property, plant and equipment
Property, plant and equipment, gross	161		163
Buildings
Property, plant and equipment
Property, plant and equipment, gross	1,708		1,653
Machinery and equipment
Property, plant and equipment
Property, plant and equipment, gross	6,338		6,214
Construction-in-progress
Property, plant and equipment
Property, plant and equipment, gross	$ 990		$ 883

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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