Benefit Plans Schedule of Allocation of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 78	[1]	$ 92	[1]	$ 85
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Plan assets	2		1
Equity securities: Equity commingled funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	29		36
Debt securities: Government bonds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	38		45
Other investments
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 9		$ 10

[1] Fair values are determined based on valuation inputs categorized as Level 1, 2 or 3 (see Note 3. Significant Accounting Policies—Fair Value). Investment plan assets are valued using Level 1 or Level 2 inputs.