Income Taxes, Operating Loss and Tax Credit Carryforwards (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Abstract]
Net operating loss carryforwards	$ 13	$ 275
Tax credit carryforwards	11	$ 47
Foreign [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss carryforwards	2
Net operating loss carryforwards indefinitely	11
Tax credit carryforwards	8
Tax credit carryforwards indefinitely	$ 3
Foreign [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss carryforwards expiration year	Dec. 31, 2037
Tax credit carryforwards expiration year	Dec. 31, 2029
Foreign [Member] | Latest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss carryforwards expiration year	Dec. 31, 2039
Tax credit carryforwards expiration year	Dec. 31, 2030
State [Member]
Operating Loss Carryforwards [Abstract]
Valuation allowance recorded	$ 13