Leases (Tables)

3 Months Ended

Mar. 31, 2022

Leases [Abstract]

Schedule of Lease, Cost

The components of lease expense were as follows:

	Three Months Ended March 31,
($ in millions)	2022		2021
Operating lease cost	$	3.3	$	3.1
Short-term lease cost	0.4		0.2
Variable lease cost	1.4		0.8
Total lease cost	$	5.1	$	4.1

Schedule of Cash Flow and Supplemental Information

Supplemental cash flow information related to leases was as follows:

	Three Months Ended March 31,
($ in millions)	2022		2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	3.2	$	3.2
Right-of-use assets obtained in exchange for new operating lease liabilities	$	9.7	$	0.5

Schedule of Lessee, Operating Lease, Liability, Maturity

Maturities of operating lease liabilities were as follows:

($ in millions)	March 31,		December 31,
Year	2022		2021
2022 (remaining period as of)	$	9.3	$	11.5
2023	11.7		10.7
2024	11.1		10.0
2025	9.4		8.2
2026	8.4		7.3
Thereafter	43.8		38.7
	93.7		86.4
Less: imputed lease interest	(15.0)		(14.1)
Total lease liabilities	$	78.7	$	72.3