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FAIR VALUE OF FINANCIAL INSTRUMENTS
12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]  
FAIR VALUE OF FINANCIAL INSTRUMENTS FAIR VALUE OF FINANCIAL INSTRUMENTS
We believe that the fair values of our current assets and current liabilities approximate their reported carrying amounts. We present the carrying values and the fair values of noncurrent financial assets and liabilities that qualify as financial instruments, determined under current guidance for disclosures on the fair value of financial instruments, in the following table:
 At Year-End 2021At Year-End 2020
($ in millions)Carrying
Amount
Fair ValueCarrying
Amount
Fair Value
Senior, mezzanine, and other loans$144 $131 $159 $142 
Total noncurrent financial assets$144 $131 $159 $142 
Senior Notes$(8,009)$(8,480)$(8,031)$(8,941)
Credit Facility(1,050)(1,050)(900)(900)
Other long-term debt(135)(140)(126)(128)
Other noncurrent liabilities(414)(414)(426)(426)
Total noncurrent financial liabilities$(9,608)$(10,084)$(9,483)$(10,395)
We estimate the fair value of our senior, mezzanine, and other loans by discounting cash flows using risk-adjusted rates, both of which are Level 3 inputs.
We determine the fair value of our Senior Notes using quoted market prices, which are directly observable Level 1 inputs. When we have outstanding commercial paper, we use pricing from recent transactions as Level 2 inputs in estimating fair value. The carrying value of our Credit Facility borrowings approximate fair value because they bear interest at a market rate. We estimate the fair value of our other long-term debt, excluding leases, using expected future payments discounted at risk-adjusted rates, which are Level 3 inputs. Our other noncurrent liabilities consist of guarantees. As we note in the “Guarantees” caption of Note 2, we measure our liability for guarantees at fair value on a nonrecurring basis, which is when we issue or modify a guarantee using Level 3 internally developed inputs. At year-end 2021 and year-end 2020, we determined that the carrying values of our guarantee liabilities approximated their fair values based on Level 3 inputs.
See the “Fair Value Measurements” caption of Note 2 for more information on the input levels we use in determining fair value.