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Fair Value Measurements (Tables)
6 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]  
Schedule of fair value of assets and liabilities measured on a recurring basis
The following tables present the Company’s assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy:
December 31, 2020Fair Value
Measurements Using
Input Type
($ in millions)Level 2
Assets: 
Derivative financial instruments$16.2 
  
Liabilities: 
Derivative financial instruments$11.1 
 
June 30, 2020Fair Value
Measurements Using
Input Type
($ in millions)Level 2
Assets: 
Derivative financial instruments$10.1 
  
Liabilities: 
Derivative financial instruments$17.9 
Schedule of carrying amounts and estimated fair values of financial instruments not recorded at fair value in the financial statements The carrying amounts and estimated fair values of the Company’s financial instruments not recorded at fair value in the financial statements were as follows:
 
 December 31, 2020June 30, 2020
($ in millions)Carrying
Value
Fair
Value
Carrying
Value
Fair
Value
Long-term debt$694.0 $754.9 $551.8 $551.1 
Company-owned life insurance$21.7 $21.7 $18.9 $18.9