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Note 7 - Fair Value of Financial Instruments
3 Months Ended
Dec. 31, 2023
Notes to Financial Statements  
Fair Value Disclosures [Text Block]

7. FAIR VALUE OF FINANCIAL INSTRUMENTS

 

The carrying amounts of cash and cash equivalents, notes receivable, and short-term debt approximate fair value due to the short maturity of these instruments. The fair values of long-term debt are estimated based on market prices for similar issues. Refer to Note 8, Fair Value Measurements, for information on financial instruments measured at fair value on a recurring basis.

 

The carrying amounts and estimated fair values of financial instruments not measured at fair value on a recurring basis are shown in the following tables, classified according to the fair value hierarchy. There were no such instruments classified as Level 3 (significant unobservable inputs) as of December 31, 2023, September 30, 2023, and December 31, 2022.

 

                   

Classification of Estimated Fair Value

 
   

Carrying Amount

   

Fair Value

   

Quoted Prices in Active Markets (Level 1)

   

Significant Observable Inputs (Level 2)

 

Spire

                               

As of December 31, 2023

                               

Cash and cash equivalents

  $ 4.8     $ 4.8     $ 4.8     $  

Notes payable

    1,047.5       1,047.5             1,047.5  

Long-term debt, including current portion

    3,704.8       3,481.5             3,481.5  

As of September 30, 2023

                               

Cash and cash equivalents

  $ 5.6     $ 5.6     $ 5.6     $  

Notes payable

    955.5       955.5             955.5  

Long-term debt, including current portion

    3,710.6       3,270.2             3,270.2  

As of December 31, 2022

                               

Cash and cash equivalents

  $ 4.8     $ 4.8     $ 4.8     $  

Notes payable

    1,227.0       1,227.0             1,227.0  

Long-term debt, including current portion

    3,412.9       3,083.7             3,083.7  
                                 

Spire Missouri

                               

As of December 31, 2023

                               

Notes payable – associated companies

  $ 633.3     $ 633.3     $     $ 633.3  

Long-term debt, including current portion

    1,785.8       1,689.5             1,689.5  

As of September 30, 2023

                               

Cash and cash equivalents

  $ 0.8     $ 0.8     $ 0.8     $  

Notes payable – associated companies

    540.6       540.6             540.6  

Long-term debt

    1,785.4       1,592.4             1,592.4  

As of December 31, 2022

                               

Notes payable – associated companies

  $ 651.2     $ 651.2     $     $ 651.2  

Long-term debt, including current portion

    1,638.1       1,497.7             1,497.7  
                                 

Spire Alabama

                               

As of December 31, 2023

                               

Notes payable – associated companies

  $ 128.5     $ 128.5     $     $ 128.5  

Long-term debt

    746.0       701.7             701.7  

As of September 30, 2023

                               

Cash and cash equivalents

  $ 1.2     $ 1.2     $ 1.2     $  

Notes payable – associated companies

    124.1       124.1             124.1  

Long-term debt

    745.9       648.0             648.0  

As of December 31, 2022

                               

Notes payable – associated companies

  $ 145.8     $ 145.8     $     $ 145.8  

Long-term debt

    745.6       674.5             674.5