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Income Taxes Components of Net Deferred Tax Liability (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Components of Net Deferred Income Tax [Abstract]
Total deferred income tax assets	$ 996	$ 909
Deferred Tax Liabilities, Net	(2,926)	(3,315)
Valuation allowance	96	189
Net deferred income tax assets	$ 900	$ 720

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- Definition

Components of Net Deferred Income Tax [Abstract]

+ References

No definition available.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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