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Schedule II - Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2023
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation and Qualifying Accounts
SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

(in millions)Balance
Beginning
of Year		Charged
to
Expense		DeductionsBalance
End of
Year
Allowance for doubtful accounts:
December 31, 2023$5.7 $3.7 $(4.4)$5.0 
December 31, 20225.4 2.3 (2.0)5.7 
December 31, 20214.9 3.2 (2.7)5.4 

(in millions)Balance
Beginning
of Year		AdditionsDeductionsBalance
End of
Year
Deferred income tax asset valuation allowance:
December 31, 2023$5.7 $0.8 $(1.9)$4.6 
December 31, 20223.2 2.5 — 5.7 
December 31, 20211.4 1.8 — 3.2