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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2023
Fair Value Disclosures [Abstract]  
Fair Value, Liabilities Measured on Recurring Basis Below is a summary of financial assets and liabilities that are measured at fair value on a recurring basis as of:
($ in millions)Quoted Prices
in Active
Markets
(Level 1)
Significant Other
Observable Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Total
June 30, 2023
Contingent consideration liabilities$— $— $11.1 $11.1 
Deferred compensation liabilities6.1 — — 6.1 
December 31, 2022
Equity securities measured at fair value$21.3 $— $— $21.3 
Contingent consideration liabilities— — 11.6 11.6 
Deferred compensation liabilities— 5.1 — 5.1