Income Taxes - Deferred Taxes (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Assets
Provisions	$ 42	$ 39
Costs capitalized for tax	1	1
Acquired intangibles	12	20
Tax receivables, principally net operating loss carryforward	130	74
Right of Use Assets	29
Credits	8	2
Other	4	3
Deferred tax assets before allowances	226	139
Valuation allowances	(179)	(125)
Total	47	14
Liabilities
Property, plant and equipment	(9)	(9)
Distribution taxes	(4)	(7)
Convertible Senior Notes	(10)	0
Lease Liabilities	(30)
Total	(53)	(16)
Net deferred tax asset (liability)	$ (6)	$ (2)