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Fair Value Measurements
3 Months Ended
Apr. 30, 2022
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
Assets and liabilities recorded at fair value are measured using the fair value hierarchy, which prioritizes the inputs used in measuring fair value. The levels of the fair value hierarchy are:
Level 1: observable inputs such as quoted prices in active markets;
Level 2: inputs other than quoted prices in active markets that are either directly or indirectly observable; and
Level 3: unobservable inputs for which little or no market data exists, therefore requiring the Company to develop its own assumptions.
The Company measures the fair value of certain equity investments on a recurring basis in the accompanying Condensed Consolidated Balance Sheets. The fair value of the Company's equity investments measured on a recurring basis is as follows:
(Amounts in millions)Fair Value as of April 30, 2022Fair Value as of January 31, 2022
Equity investments measured using Level 1 inputs$5,080 $6,069 
Equity investments measured using Level 2 inputs4,810 5,819 
Total$9,890 $11,888 
Derivatives
The Company also has derivatives recorded at fair value. Derivative fair values are the estimated amounts the Company would receive or pay upon termination of the related derivative agreements as of the reporting dates. The fair values have been measured using the income approach and Level 2 inputs, which include the relevant interest rate and foreign currency forward curves. As of April 30, 2022 and January 31, 2022, the notional amounts and fair values of these derivatives were as follows:
 April 30, 2022January 31, 2022
(Amounts in millions)Notional AmountFair ValueNotional AmountFair Value
Receive fixed-rate, pay variable-rate interest rate swaps designated as fair value hedges$8,021 $(539)
(1)
$8,021 $(47)
(1)
Receive fixed-rate, pay fixed-rate cross-currency swaps designated as cash flow hedges6,428 (1,121)
(1)
7,855 (1,048)
(1)
Total$14,449 $(1,660)$15,876 $(1,095)
(1)Classified primarily in deferred income taxes and other within the Company's Condensed Consolidated Balance Sheets.
Nonrecurring Fair Value Measurements
In addition to assets and liabilities recorded at fair value on a recurring basis, the Company's assets and liabilities are also subject to nonrecurring fair value measurements. Generally, assets are recorded at fair value on a nonrecurring basis as a result of impairment charges. The Company did not have any material assets or liabilities resulting in nonrecurring fair value measurements as of April 30, 2022.
Other Fair Value Disclosures
The Company records cash and cash equivalents, restricted cash, and short-term borrowings at cost. The carrying values of these instruments approximate their fair value due to their short-term maturities.
The Company's long-term debt is also recorded at cost. The fair value is estimated using Level 2 inputs based on the Company's current incremental borrowing rate for similar types of borrowing arrangements. The carrying value and fair value of the Company's long-term debt as of April 30, 2022 and January 31, 2022, are as follows: 
 April 30, 2022January 31, 2022
(Amounts in millions)Carrying ValueFair ValueCarrying ValueFair Value
Long-term debt, including amounts due within one year$35,754 $36,680 $37,667 $42,381