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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2024
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
(Dollars in millions)
Years ended December 31, 2024, 2023 and 2022
DescriptionBalance at
Beginning
of Year		Charged to
Costs and
Expenses		Acquisition
of
Businesses		DeductionsBalance at
End of
Year
2024:
Valuation allowance for trade and notes receivable$10.1 $3.1 $— $(0.3)$12.9 
Valuation allowance for deferred tax assets11.7 — — (5.6)6.1 
2023:
Valuation allowance for trade and notes receivable$9.5 $1.1 $— $(0.5)$10.1 
Valuation allowance for deferred tax assets8.3 3.4 — — 11.7 
2022:
Valuation allowance for trade and notes receivable$9.5 $0.6 $— $(0.6)$9.5 
Valuation allowance for deferred tax assets7.1 1.2 — — 8.3