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Income Taxes (Details 5) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Examination [Line Items]
Income Tax Examination, Penalties and Interest Expense	$ 13	$ 2	$ 5
Unrecognized tax benefits reconciliation [Roll Forward]
Beginning of Year	113	100
Additions on tax positions related to the current year	84	19
Additions for tax positions of prior years	54	0
Reductions for tax positions of prior years	(30)	(5)
Reductions for settlements	(31)	0
Reductions due to statute expiration	(2)	(1)
Foreign currency translation adjustment	0	0
End of Year	$ 188	$ 113	$ 100

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The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations.

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