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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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Goodwill and Intangible Assets Intangible Asset Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Totals	$ 734		$ 734		$ 810
Amortization of intangible assets	39	$ 40	78	$ 86
Accumulated amortization	251		251		173
Intangible Assets		$ 22		$ 159
Developed and Acquired Technology
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	190		190		132
Trade Names
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ 61		$ 61		$ 41