Leases (Tables)

6 Months Ended

Jun. 30, 2020

Components of Lease Expense and Supplemental Cash Flow Information

The components of lease expense were as follows (in millions):


	Three Months Ended						Six Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
Operating lease expense	$	4.4	$	3.7	$	8.7	$	7.3
Variable lease expense ⁽¹⁾	0.4		0.6		1.0		1.2
Short-term lease expense	1.0		0.7		1.9		1.4
Total lease expense	$	5.8	$	5.0	$	11.6	$	9.9

⁽¹⁾Variable lease expense for the six months ended June 30, 2020 and June 30, 2019 predominantly included common area maintenance charges and parking expense.

Supplemental cash flow information related to leases was as follows (in millions):


	Six Months Ended		Six Months Ended
	June 30, 2020		June 30, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows used for operating leases	$	8.7	$	8.5

Lease liabilities arising from obtaining right-of-use assets
Operating leases	$	5.9	$	4.9

Supplemental Balance Sheet Information

Supplemental balance sheet information related to our operating leases was as follows (in millions, except lease term and discount rate):


	Classification	June 30, 2020			December 31, 2019
Operating lease ROU assets - non-current	Other assets	$	42.1		$	44.3

Operating lease liabilities - current	Accrued liabilities	$	15.7		$	15.5
Operating lease liabilities - non-current	Other liabilities	27.6			30.6
Total operating lease liabilities		$	43.3		$	46.1

Weighted average remaining lease term in years - operating leases		3.5			3.7
Weighted average discount rate - operating leases		3.0		%	2.8		%

Maturities of Operating Lease Liabilities

Maturities of operating lease liabilities as of June 30, 2020 were as follows (in millions):


Year ending December 31,	Amount
2020 (the remainder of 2020)	$	8.5
2021	14.7
2022	9.9
2023	6.2
2024	4.4
Thereafter	2.0
Total lease payments	45.7
Less imputed interest	(2.4)
Total	$	43.3