Leases (Tables)

6 Months Ended

Jun. 30, 2020

Leases [Abstract]

Schedule of Lease, Cost

The components of lease expense were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
($ in millions)	2020		2019		2020		2019
Operating lease cost	$	3.1	$	3.1	$	6.2	$	6.3
Short-term lease cost	0.1		0.2		0.3		0.4
Variable lease cost	0.8		0.9		1.6		1.5
Total lease cost	$	4.0	$	4.2	$	8.1	$	8.2

Supplemental cash flow information related to leases were as follows:

	Three Months Ended June 30,				Six Months Ended June 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	$	3.1	$	6.4	$	6.2
Right-of-use assets obtained in exchange for new operating lease liabilities	$	1.8	$	1.3	$	4.3	$	8.1

Schedule of Lessee, Operating Lease, Liability, Maturity

Maturities of operating lease liabilities were as follows:

($ in millions)	June 30,		December 31,
Year	2020		2019
2020 (remaining six months)	$	6.3	$	12.1
2021	11.5		10.4
2022	9.6		8.6
2023	8.6		7.8
2024	8.1		7.3
Thereafter	41.6		41.8
	85.7		88.0
Less: imputed lease interest	(15.0)		(16.0)
Total lease liabilities	$	70.7	$	72.0