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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Goodwill and Intangible Assets, net (Schedule of Finite-lived intangible assets) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2020			$ 869
Acquisitions			8
Exchange rate changes			(27)
As of September 30, 2021	$ 850		850
As of December 31, 2020			(672)
Amortization	(6)	$ (6)	(17)	$ (17)
Exchange rate changes			24
As of September 30, 2021	(665)		(665)
Net book value	185		185
Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2020			44
Acquisitions			0
Exchange rate changes			0
As of September 30, 2021	44		44
As of December 31, 2020			(38)
Amortization			(1)
Exchange rate changes			0
As of September 30, 2021	(39)		(39)
Net book value	5		5
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2020			724
Acquisitions			8
Exchange rate changes			(26)
As of September 30, 2021	706		706
As of December 31, 2020			(555)
Amortization			(13)
Exchange rate changes			23
As of September 30, 2021	(545)		(545)
Net book value	161		161
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2020			45
Acquisitions			0
Exchange rate changes			(1)
As of September 30, 2021	44		44
As of December 31, 2020			(40)
Amortization			(2)
Exchange rate changes			1
As of September 30, 2021	(41)		(41)
Net book value	3		3
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2020			56
Acquisitions			0
Exchange rate changes			0
As of September 30, 2021	56		56
As of December 31, 2020			(39)
Amortization			(1)
Exchange rate changes			0
As of September 30, 2021	(40)		(40)
Net book value	$ 16		$ 16