Income Taxes (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Gross deferred tax assets	$ 118	$ 153
Less valuation allowance	(13)	(11)
Deferred tax assets	105	142
Deferred tax liabilities	51	55
Deferred tax assets, net	$ 54	$ 87