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Long-Term Debt and Credit Facilities (Tables)
12 Months Ended
Dec. 31, 2023
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments
Long-term debt consisted of the following at December 31:
  Weighted Average Interest RateMaturities20232022
Notes3.1%2024-2078$7,580 $6,933 
Commercial paper4.0%2024606 1,778 
Finance Lease ObligationsVarious53 44 
8,239 8,755 
Less: Current portion of long-term debt(20)(14)
Total $8,219 $8,741 
Schedule of Maturities of Long-term Debt Excluding commercial paper, scheduled maturities of long-term debt and finance leases outstanding as of December 31, 2023, were as follows:  
Years Ended December 31,
2024$521 
2025643 
20261,060 
2027503 
2028616 
Thereafter4,290