Income Taxes Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Accrued liabilities	$ 324	$ 354
Compensation and benefits	218	214
State taxes and other credits	47	41
Net operating losses	147	119
Unrealized gain/loss - 2015 EUR Notes	58	20
U.S. foreign tax credits	276	145
Intangible assets	182	157
Other items	142	74
Less: Valuation allowance	(353)	(205)
Total Deferred Tax Assets	1,041	919
Prepaid expenses and other accruals	78	83
Intangible assets	216	187
Property, plant and equipment	183	128
Previously taxed earnings and profits	61	0
Other items	98	63
Deferred Tax Liabilities, Gross	636	461
Net Deferred Tax Assets	$ 405	$ 458

Deferred Tax Asset. Unrealized Gain (Loss) on Debt

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Deferred Tax Liabilities, Previously Taxed Earnings and Profits

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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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