Financial Instruments and Risk Management (Carrying Amount and Fair Value of Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Total fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total debt	$ 7,328	$ 7,797
Carrying value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total debt	7,541	7,636
Level 1 | Total fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total debt	4,503	7,419
Level 2 | Total fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total debt	$ 2,825	$ 378