Other Financial Data - Property, Plant And Equipment, Net (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Dec. 31, 2019
Property, Plant and Equipment, Net [Abstract]
Land	$ 6		$ 6		$ 15
Leasehold improvements	415		415		410
Machinery and equipment	2,169		2,169		2,051
Property, plant and equipment, gross	2,590		2,590		2,476
Less accumulated depreciation	(1,614)		(1,614)		(1,484)
Property, plant and equipment, net	976		976		$ 992
Depreciation expense	$ 49	$ 47	$ 142	$ 136

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 before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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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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