v3.23.2
Debt
6 Months Ended
Jun. 30, 2023
Debt Disclosure [Abstract]  
Debt Debt
Short-Term Debt
We have a debt financing program of up to $10.0 billion through the issuance of commercial paper. Net proceeds from this program are used for general corporate purposes. We had no commercial paper outstanding as of December 31, 2022 and June 30, 2023.
Our short-term debt balance also includes the current portion of certain long-term debt.
Long-Term Debt
Total outstanding debt is summarized below (in millions, except percentages):
MaturityCoupon RateEffective Interest RateAs of December 31, 2022As of
June 30, 2023
Debt
2014-2020 Notes issuances2024 - 2060
0.45% - 3.38%
0.57% - 3.38%
$13,000 $13,000 
Future finance lease payments, net and other (1)
2,142 2,159 
      Total debt15,142 15,159 
Unamortized discount and debt issuance costs(143)(137)
Less: Current portion of long-term notes(2)
(999)
Less: Current portion future finance lease payments, net and other current debt(1)(2)
(298)(318)
       Total long-term debt$14,701 $13,705 
(1)Future finance lease payments are net of imputed interest.
(2)Total current portion of long-term debt is included within other accrued expenses and current liabilities. See Note 6 for further details.
The notes in the table above are fixed-rate senior unsecured obligations and generally rank equally with each other. We may redeem the notes at any time in whole or in part at specified redemption prices. The effective interest rates are based on proceeds received with interest payable semi-annually.
The total estimated fair value of the outstanding notes was approximately $9.9 billion and $10.1 billion as of December 31, 2022 and June 30, 2023, respectively. The fair value was determined based on observable market prices of identical instruments in less active markets and is categorized accordingly as Level 2 in the fair value hierarchy.
Credit Facility
As of June 30, 2023, we had $10.0 billion of revolving credit facilities of which $4.0 billion expires in April 2024 and $6.0 billion expires in April 2028. The interest rates for all credit facilities are determined based on a formula using certain market rates, as well as our progress toward the achievement of certain sustainability goals. No amounts were outstanding under the credit facilities as of December 31, 2022 and June 30, 2023.