Long-term and Short-term Debt (Short-term with Maturities of Year or Less) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Debt Disclosure [Abstract]
Short-term Debt	$ 465	$ 119
Average daily balance	$ 270	$ 142
Average days outstanding	82 days	65 days