Leases - (Tables)

6 Months Ended

Jun. 30, 2020

Leases [Abstract]

Lease, Cost [Table Text Block]

Lease expense	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Operating lease costs	$	3.9	$	3.5	$	7.8	$	7.0
Finance lease costs:
Amortization of right-of-use assets	0.4		0.5		0.9		0.9
Interest on lease liabilities	0.4		0.5		0.9		0.9
Total finance lease costs	0.9		0.9		1.8		1.8
Variable lease costs	0.4		0.3		0.8		0.6
Total lease costs	$	5.2	$	4.8	$	10.4	$	9.4

Lease, Supplemental cash flow information

Supplemental cash flow information	Six Months Ended June 30,
	2020		2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	8.8	$	8.1
Operating cash flows from finance leases	0.9		0.9
Financing cash flows from finance leases	0.7		0.6
Non-cash amounts for lease liabilities arising from obtaining right-of-use assets:
Operating leases	$	1.7	$	0.9
Finance leases	0.3		0.5

Supplemental Balance Sheet Disclosures [Text Block]

Supplemental balance sheet information
	Classification	June 30, 2020		December 31, 2019
Lease ROU Assets
Operating lease assets	Operating lease right-of-use assets	$	68.2	$	73.1
Finance lease assets	Property, plant and equipment, net	26.7		26.5
Accumulated depreciation		(11.8)		(11.1)
Total lease ROU assets		$	83.1	$	88.5
Lease Liabilities
Current operating lease liabilities	Other accrued liabilities	$	14.5	$	13.9
Current finance lease liabilities	Short-term debt	1.6		1.4
Total current lease liabilities		16.1		15.3
Non-current operating lease liabilities	Long-term operating lease liabilities	60.1		65.6
Non-current finance lease liabilities	Long-term debt	20.0		20.6
Total non-current lease liabilities		80.1		86.2
Total operating lease liabilities		74.6		79.5
Total finance lease liabilities		21.6		22.0
Total lease liabilities		$	96.2	$	101.5