Leases (Tables)

12 Months Ended

Dec. 31, 2019

Dec. 31, 2018

Leases [Abstract]

Lease, Cost

The components of lease expense were as follows:

($ in millions)	2019
Operating lease cost	$	12.9
Short-term lease cost	0.8
Variable lease cost	3.3
Total lease cost	$	17.0

lessee, lease Cash Flow and Supplemental information

Supplemental information related to leases was as follows:

($ in millions)	2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	12.5
Right-of-use assets obtained in exchange for new operating lease liabilities	9.1

Lessee, Operating Lease, Liability, Maturity

Maturities of lease liabilities as of December 31, 2019 were as follows:

($ in millions)	Operating
Year	Leases
2020	$	12.1
2021	10.4
2022	8.6
2023	7.8
2024	7.3
Thereafter	41.8
	88.0
Less: imputed lease interest	(16.0)
Total lease liabilities	$	72.0

Schedule of Future Minimum Rental Payments for Operating Leases

Maturities of future minimum rental payments under non-cancelable operating leases as of December 31, 2018 were as follows:

($ in millions)	Operating
Year	Leases
2019	$	13.0
2020	10.5
2021	7.8
2022	6.9
2023	5.5
Thereafter	37.8
Total	$	81.5