Supplemental Financial Information - Depreciation, amortization and impairment (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 29, 2020	Mar. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Depreciation of property, plant and equipment	$ 132	$ 124
Total - Depreciation, amortization and impairment	540	502
Internal Use Software
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	2	2
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 406	$ 376

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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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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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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