Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2024

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, 2024:
Assets:
Cross-currency swap derivative contract	$	—	$	5.9	$	—	$	5.9
Investments in rabbi trust	$	16.0	$	8.2	$	—	$	24.2
Liabilities:
Deferred compensation plans	$	—	$	24.2	$	—	$	24.2
Contingent consideration	$	—	$	—	$	0.3	$	0.3
December 31, 2023:
Liabilities:
Cross-currency swap derivative contract	$	—	$	3.3	$	—	$	3.3
Deferred compensation plans	$	—	$	21.4	$	—	$	21.4
Contingent consideration	$	—	$	—	$	3.8	$	3.8

The carrying amounts and fair values of the Company’s financial instruments for the years ended December 31 were as follows ($ in millions):

	2024				2023
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cross-currency swap derivative contract	$	5.9	$	5.9	$	—	$	—
Investments in rabbi trust	$	24.2	$	24.2	$	—	$	—
Liabilities:
Contingent consideration	$	0.3	$	0.3	$	3.8	$	3.8
Cross-currency swap derivative contract	$	—	$	—	$	3.3	$	3.3
Convertible senior notes due 2028	$	489.7	$	450.0	$	486.9	$	455.7
Convertible senior notes due 2025	$	116.0	$	125.4	$	115.3	$	145.1
Other debt	$	788.6	$	788.6	$	911.2	$	911.2