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Fair Value of Financial Instruments
12 Months Ended
Dec. 31, 2022
Fair Value Disclosures [Abstract]  
Fair Value Disclosures
9. FAIR VALUE OF FINANCIAL INSTRUMENTS
The following table presents the financial assets and liabilities the company records at fair value on a recurring basis identified by the level of inputs used to determine fair value. See Note 1 for the definitions of these levels and for further information on our financial instruments.
 December 31, 2022December 31, 2021
$ in millionsLevel 1Level 2Level 3TotalLevel 1Level 2Level 3Total
Financial Assets
Marketable securities$310 $1 $8 $319 $393 $$$401 
Marketable securities valued using NAV13 17 
Total marketable securities310 1 8 332 393 418 
Derivatives 7  7 — (1)— (1)
The notional value of the company’s foreign currency forward contracts at December 31, 2022 and 2021 was $221 million and $120 million, respectively. The portion of notional value designated as a cash flow hedge at December
31, 2022, was $87 million. At December 31, 2021, no portion of the notional value was designated as a cash flow hedge.
The derivative fair values and related unrealized gains/losses at December 31, 2022 and 2021 were not material.
There were no transfers of financial instruments into or out of Level 3 of the fair value hierarchy during the years ended December 31, 2022 and 2021.
The carrying value of cash and cash equivalents and commercial paper approximates fair value.