v3.26.1
Financial Instruments
3 Months Ended
Mar. 31, 2026
Financial Instruments  
Financial Instruments

Note 11—Financial Instruments

Overview—The carrying amounts and fair values of our financial instruments were as follows (in millions):

March 31, 2026

December 31, 2025

 

Carrying

Fair

Carrying

Fair

 

  ​ ​ ​

amount

  ​ ​ ​

value

  ​ ​ ​

amount

  ​ ​ ​

value

 

Cash and cash equivalents

 

$

330

$

330

$

620

$

620

Restricted cash and cash equivalents

285

285

377

377

Total debt

5,274

5,547

5,657

5,755

Cash and cash equivalents—Our cash and cash equivalents are primarily invested in demand deposits, short-term time deposits and money market funds.  The carrying amount of our cash and cash equivalents represents the historical cost, plus accrued interest, which approximates fair value because of the short maturities of the instruments.

Restricted cash and cash equivalents—Our restricted cash and cash equivalents, which are subject to restrictions due to collateral requirements, legislation, regulation or court order, are primarily invested in demand deposits and money market funds.  The carrying amount of our restricted cash and cash equivalents represents the historical cost, plus accrued interest, which approximates fair value because of the short maturities of the instruments.

Total debt—The carrying amount of our total debt represents the principal amount, together with unamortized discounts, premiums and issue costs.  The carrying amount and fair value of our total debt includes amounts related to our exchangeable bonds (see Note 6—Debt).  We estimated the fair value of our total debt using significant other observable inputs, representative of Level 2 fair value measurements, including the terms and credit spreads for the instruments and, with respect to our exchangeable bonds, the expected volatility of the market price for our shares.