(Summary of Operating Loss And Tax Credit Carryforwards) (Details) $ in Millions	Dec. 31, 2023 USD ($)
Operating Loss Carryforwards [Line Items]
Total	$ 881
Less: valuation allowance (a)	(778)	[1]
Total, net	103
2024 Through 2033
Operating Loss Carryforwards [Line Items]
Total	121
Less: valuation allowance (a)	(83)	[1]
Total, net	38
2034 Through 2043
Operating Loss Carryforwards [Line Items]
Total	237
Less: valuation allowance (a)	(220)	[1]
Total, net	17
Indefinite
Operating Loss Carryforwards [Line Items]
Total	523
Less: valuation allowance (a)	(475)	[1]
Total, net	48
U.S. federal and non-U.S. NOLs
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	652
U.S. federal and non-U.S. NOLs | 2024 Through 2033
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1
U.S. federal and non-U.S. NOLs | 2034 Through 2043
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	225
U.S. federal and non-U.S. NOLs | Indefinite
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	426
State taxing jurisdiction NOLs (a)
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	47	[1]
State taxing jurisdiction NOLs (a) | 2024 Through 2033
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	38	[1]
State taxing jurisdiction NOLs (a) | 2034 Through 2043
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	9	[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	182	[1]
U.S. federal, non- U.S. and state tax credit carryforwards (a) | 2024 Through 2033
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	82	[1]
U.S. federal, non- U.S. and state tax credit carryforwards (a) | 2034 Through 2043
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	3	[1]
U.S. federal, non- U.S. and state tax credit carryforwards (a) | Indefinite
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	$ 97	[1]

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