(Summary of Operating Loss And Tax Credit Carryforwards) (Details) $ in Millions	Dec. 31, 2021 USD ($)
Operating Loss Carryforwards [Line Items]
Total	$ 860
Less: valuation allowance (a)	(607)	[1]
Total, net	253
2022 Through 2031
Operating Loss Carryforwards [Line Items]
Total	186
Less: valuation allowance (a)	(100)	[1]
Total, net	86
2032 Through 2041
Operating Loss Carryforwards [Line Items]
Total	136
Less: valuation allowance (a)	(118)	[1]
Total, net	18
Indefinite
Operating Loss Carryforwards [Line Items]
Total	538
Less: valuation allowance (a)	(389)	[1]
Total, net	149
U.S. federal and non-U.S. NOLs
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	601
U.S. federal and non-U.S. NOLs | 2022 Through 2031
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	53
U.S. federal and non-U.S. NOLs | 2032 Through 2041
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	123
U.S. federal and non-U.S. NOLs | Indefinite
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	425
State taxing jurisdiction NOLs (a)
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	60	[1]
State taxing jurisdiction NOLs (a) | 2022 Through 2031
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	52	[1]
State taxing jurisdiction NOLs (a) | 2032 Through 2041
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	8	[1]
State taxing jurisdiction NOLs (a) | Indefinite
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0	[1]
U.S. federal, non- U.S. and state tax credit carryforwards (a)
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	199	[1]
U.S. federal, non- U.S. and state tax credit carryforwards (a) | 2022 Through 2031
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	81	[1]
U.S. federal, non- U.S. and state tax credit carryforwards (a) | 2032 Through 2041
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	5	[1]
U.S. federal, non- U.S. and state tax credit carryforwards (a) | Indefinite
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	$ 113	[1]

[1] State amounts are presented net of federal benefit.