Income Taxes Unrecognized Benefits (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Unrecognized tax benefit — Permanent tax positions	$ 36,000,000	$ 35,000,000
Unrecognized tax benefit — Temporary tax positions	5,000,000	9,000,000
Total unrecognized tax benefit	41,000,000	44,000,000
NOL and tax credit carryforwards	28,000,000	40,000,000
Net Deferred Tax Liability associated with the Unrecognized Tax Benefit Amounts and Related NOLs and Tax Credit Carryforwards	(23,000,000)	(29,000,000)
Decrease in Unrecognized Tax Benefits is Reasonably Possible	19,000,000
Unrecognized Tax Benefits, Income Tax Penalties Accrued	$ 0	$ 0