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v3.23.3

Debt and Derivatives - Components (Detail) $ in Millions, $ in Millions | Sep. 30, 2023 USD ($) | Sep. 30, 2023 CAD ($) | Dec. 31, 2022 USD ($)
--- | --- | --- | ---
Debt |  |  |
Debt | $ 15,430 |  | $ 14,984
Debt issuance costs, discounts and other | (123) |  | (88)
Current portion of long-term debt | 297 |  | 414
Long-term debt, less current portion | 15,133 |  | 14,570
Commercial Paper Program [Member] |  |  |
Debt |  |  |
Debt | $ 490 |  | $ 1,730
Weighted average interest rate | 5.50% | 5.50% | 4.90%
Senior Notes, Aggregate [Member] |  |  |
Debt |  |  |
Debt | $ 11,376 |  | $ 8,626
Weighted average interest rate | 3.70% | 3.70% | 3.20%
Senior Notes, Aggregate [Member] | Minimum [Member] |  |  |
Debt |  |  |
Interest rate (as a percent) | 0.75% | 0.75% | 0.75%
Senior Notes, Aggregate [Member] | Maximum [Member] |  |  |
Debt |  |  |
Interest rate (as a percent) | 7.75% | 7.75% | 7.75%
Term Loan [Member] |  |  |
Debt |  |  |
Debt |  |  | $ 1,000
Effective interest rate (as a percent) |  |  | 5.10%
Canadian Senior Notes [Member] |  |  |
Debt |  |  |
Debt | $ 368 | $ 500 | $ 369
Interest rate (as a percent) | 2.60% | 2.60% | 2.60%
Tax Exempt Bonds [Member] |  |  |
Debt |  |  |
Debt | $ 2,633 |  | $ 2,648
Weighted average interest rate | 2.90% | 2.90% | 2.70%
Tax Exempt Bonds [Member] | Minimum [Member] |  |  |
Debt |  |  |
Interest rate (as a percent) | 0.55% | 0.55% | 0.55%
Tax Exempt Bonds [Member] | Maximum [Member] |  |  |
Debt |  |  |
Interest rate (as a percent) | 4.40% | 4.40% | 4.40%
Financing leases and other [Member] |  |  |
Debt |  |  |
Debt | $ 686 |  | $ 699
Weighted average interest rate | 4.80% | 4.80% | 4.70%

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