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Short-Term Debt (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Short-term Debt [Line Items]
Amount outstanding at period end	$ 719	$ 695
Commercial Paper
Short-term Debt [Line Items]
Borrowing limit	3,550	3,550
Amount outstanding at period end	719	695
Average amount outstanding	1,238	508
Maximum amount outstanding	$ 1,785	$ 1,314
Weighted average interest rate, computed on a daily basis	4.61%	5.47%
Weighted average interest rate at period end	4.65%	4.64%
Letter of Credit
Short-term Debt [Line Items]
Amount outstanding at period end	$ 41	$ 42

X

- Definition

The effective interest rate during the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, the maximum amount borrowed at any time during the period.

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