Income Taxes Income tax provision (benefit) from continuing operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S. federal	$ 79	$ (5)	$ 55
State and local	17	(1)	8
Foreign	27	(17)	32
Net current tax provision (benefit)	123	(23)	95
U.S federal	(3)	7	11
State and local	8	(1)	6
Foreign	(2)	5	11
Net valuation allowance increase (decrease)	(1)	(1)	(1)
Deferred income tax expense (benefit)	2	10	27
Provision (benefit) for income taxes	125	(13)	122
Income Taxes Paid		20	$ 90
Income taxes payable	18	0
Income Taxes Receivable, Current	2	$ 35
Taxes Payable	$ 15