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Variable Interest Entities (Tables)
9 Months Ended
Sep. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]  
Schedule of Variable Interest Entities
The following table presents information regarding activity in the Company’s Alternative Energy Partnership Investments for the nine and three months ended September 30, 2022 and 2021.
Nine Months EndedThree Months Ended
(Dollars in millions)Sep 30, 2022Sep 30, 2021Sep 30, 2022Sep 30, 2021
Fundings$— $80.0 $— $31.5 
Cash distribution from investment1.5 0.2 0.6 0.2 
Gain (loss) on investments in Alternative Energy Partnership(21.2)(46.9)0.4 (23.8)
Income tax credits recognized3.9 64.8 — 28.7 
Tax benefit (expense) recognized from Alternative Energy Partnership4.1 3.0 (0.1)1.9 
The following table represents the carrying value of the associated assets and liabilities and the associated maximum loss exposure of the Alternative Energy Partnership Investments as of September 30, 2022 and December 31, 2021.
(Dollars in millions)Sep 30, 2022Dec 31, 2021
Cash$2.8 $21.5 
Equipment, net of depreciation265.8 310.5 
Other assets4.4 3.0 
Total unconsolidated assets272.9 335.0 
Maximum loss exposure16.9 39.6