Leases (Tables)

9 Months Ended

Sep. 30, 2020

Leases [Abstract]

Schedule of Lease, Cost

The components of lease expense were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in millions)	2020		2019		2020		2019
Operating lease cost	$	3.1	$	3.4	$	9.3	$	9.7
Short-term lease cost	0.3		0.1		0.6		0.5
Variable lease cost	1.2		0.8		2.8		2.3
Total lease cost	$	4.6	$	4.3	$	12.7	$	12.5

Supplemental cash flow information related to leases were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in millions)	2020		2019		2020		2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	3.2	$	3.2	$	9.6	$	9.4
Right-of-use assets obtained in exchange for new operating lease liabilities	$	0.3	$	0.3	$	4.6	$	8.4

Schedule of Lessee, Operating Lease, Liability, Maturity

Maturities of operating lease liabilities were as follows:

($ in millions)	September 30,		December 31,
Year	2020		2019
2020 (remaining three months)	$	3.4	$	12.1
2021	11.8		10.4
2022	9.7		8.6
2023	8.7		7.8
2024	8.2		7.3
Thereafter	42.6		41.8
	84.4		88.0
Less: imputed lease interest	(14.6)		(16.0)
Total lease liabilities	$	69.8	$	72.0