Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2023

Fair Value Disclosures [Abstract]

Schedule of financial assets and liabilities at carrying and fair value

A summary of financial assets and liabilities that are measured at fair value on a recurring basis were as follows ($ in millions):

	Quoted Prices in Active Market (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
December 31, 2023:
Liabilities:
Cross-currency swap derivative contracts	$	—	$	3.3	$	—	$	3.3
Deferred compensation plans	$	—	$	21.4	$	—	$	21.4
Contingent consideration	$	—	$	—	$	3.8	$	3.8
December 31, 2022:
Liabilities:
Deferred compensation plans	$	—	$	15.8	$	—	$	15.8
Contingent consideration	$	—	$	—	$	6.0	$	6.0

The carrying amounts and fair values of the Company’s financial instruments were as follows ($ in millions):

	2023				2022
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Liabilities:
Contingent consideration	$	3.8	$	3.8	$	6.0	$	6.0
Cross-currency swap derivative contracts	$	3.3	$	3.3	$	—	$	—
Convertible senior notes due 2028	$	486.9	$	455.7	$	—	$	—
Convertible senior notes due 2025	$	115.3	$	145.1	$	510.0	$	873.0
Other debt	$	911.2	$	911.2	$	870.7	$	870.7