Letters Of Credit utilizing availability under our Credit Facilities

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Debt (Credit Facilities) (Details) $ in Millions	1 Months Ended		12 Months Ended
Debt (Credit Facilities) (Details) $ in Millions	Jul. 31, 2024 USD ($) extension	Aug. 31, 2021	Dec. 31, 2024 USD ($)	Dec. 31, 2024 CAD ($)	Dec. 31, 2023 USD ($)	Oct. 31, 2023 USD ($)	Feb. 28, 2023 USD ($)	Aug. 31, 2022 USD ($)	May 31, 2022 USD ($)	Apr. 29, 2022 USD ($)	Jan. 31, 2022 USD ($)
Line of Credit Facility [Line Items]
Long-term debt			$ 12,840,000,000
Letters of credit outstanding under credit facilities			317,000,000		$ 337,000,000
Balance availability under credit facilities			2,192,000,000		2,371,000,000
Uncommitted Credit Facility
Line of Credit Facility [Line Items]
Credit facility maximum borrowing capacity											$ 200,000,000
Long-term debt			0		0
Principal			0		0
The Credit Facility
Line of Credit Facility [Line Items]
Long-term debt			514,000,000		297,000,000
Principal			514,000,000		297,000,000
Term Loan Facility
Line of Credit Facility [Line Items]
Long-term debt			0		500,000,000
Accordion feature, increase limit (up to)	$ 1,000,000,000.0
Principal			0		500,000,000
Commercial Paper Facility
Line of Credit Facility [Line Items]
Credit facility maximum borrowing capacity						$ 1,500,000,000		$ 1,000,000,000.0	$ 500,000,000
Long-term debt			477,000,000		495,000,000
Principal			$ 477,000,000		496,000,000
Weighted average interest rate			4.646%	4.646%
Commercial Paper Facility \| Weighted Average
Line of Credit Facility [Line Items]
Weighted average maturity term			18 days
Revolving Credit Facility
Line of Credit Facility [Line Items]
Long-term debt			$ 514,000,000		$ 297,000,000
Revolving Credit Facility \| Canadian Sublimit
Line of Credit Facility [Line Items]
Credit facility maximum borrowing capacity							$ 1,000,000,000.0
Long-term debt				$ 232
Interest rate			5.309%	5.309%
Line of Credit \| The Credit Facility
Line of Credit Facility [Line Items]
Credit facility maximum borrowing capacity	$ 3,500,000,000
Line of Credit \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Number of available extensions \| extension	2
Extension period	1 year
Basis spread on variable rate		0.92%
Term Loan Facility
Line of Credit Facility [Line Items]
Principal amount										$ 1,000,000,000