Leases (Tables)

12 Months Ended

Dec. 31, 2023

Leases [Abstract]

Schedule of Lease, Cost

The components of lease expense were as follows:

($ in millions)	2023		2022		2021
Operating lease cost	$	20.3	$	15.5	$	12.7
Short-term lease cost	6.1		1.3		1.3
Variable lease cost	5.5		6.8		4.8
Total lease cost	$	31.9	$	23.6	$	18.8

Schedule of Cash Flow and Supplemental information

Supplemental information related to leases was as follows:

($ in millions)	2023		2022		2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	19.1	$	13.3	$	12.1
Right-of-use assets obtained in exchange for new operating lease liabilities	$	10.7	$	47.6	$	13.3

Schedule of Lessee, Operating Lease, Liability, Maturity

Maturities of lease liabilities as of December 31, 2023 were as follows:

($ in millions)	Operating
Year	Leases
2024	$	20.9
2025	18.7
2026	15.7
2027	11.2
2028	9.5
Thereafter	42.1
	118.1
Less: imputed lease interest	(15.9)
Total lease liabilities	$	102.2