Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Lease, Cost

The components of lease expense were as follows:

($ in millions)	2020		2019
Operating lease cost	$	12.8	$	12.9
Short-term lease cost	0.8		0.8
Variable lease cost	3.8		3.3
Total lease cost	$	17.4	$	17.0

Cash Flow and Supplemental information

Supplemental information related to leases was as follows:

($ in millions)	2020		2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	12.6	$	12.5
Right-of-use assets obtained in exchange for new operating lease liabilities	6.1		9.1

Lessee, Operating Lease, Liability, Maturity

Maturities of lease liabilities as of December 31, 2020 were as follows:

($ in millions)	Operating
Year	Leases
2021	$	12.4
2022	10.4
2023	9.3
2024	8.7
2025	6.9
Thereafter	37.5
	85.2
Less: imputed lease interest	(14.7)
Total lease liabilities	$	70.5