Benefit Plans Schedule of Allocation of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 94	[1]	$ 86	[1]	$ 78
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1		1
Equity securities: Equity commingled funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	37		34
Debt securities: Government bonds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	46		40
Other investments
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 10		$ 11

[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.