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Variable Interest Entities (Tables)
6 Months Ended
Jun. 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 six and three months ended June 30, 2022 and 2021.
Six Months EndedThree Months Ended
(Dollars in millions)Jun 30, 2022Jun 30, 2021Jun 30, 2022Jun 30, 2021
Fundings$— $48.5 $— $— 
Cash distribution from investment0.9 — 0.5 — 
Gain (loss) on investments in Alternative Energy Partnership(21.6)(23.1)(4.9)(7.7)
Income tax credits recognized3.9 36.1 — 7.7 
Tax benefit (expense) recognized from Alternative Energy Partnership4.2 1.1 1.1 0.9 
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 June 30, 2022 and December 31, 2021.
(Dollars in millions)Jun 30, 2022Dec 31, 2021
Cash$10.0 $21.5 
Equipment, net of depreciation271.1 310.5 
Other assets11.4 3.0 
Total unconsolidated assets292.5 335.0 
Maximum loss exposure17.0 39.6