Leases - (Tables)

3 Months Ended

Mar. 31, 2020

Leases [Abstract]

Lease, Cost [Table Text Block]

Lease expense	Three Months Ended
	March 31,
	2020		2019
Operating lease costs	$	3.9	$	3.5
Finance lease costs:
Amortization of right-of-use assets	0.4		0.4
Interest on lease liabilities	0.5		0.5
Total finance lease costs	0.9		0.9
Variable lease costs	0.4		0.2
Total lease costs	$	5.2	$	4.6

Lease, Supplemental cash flow information

Supplemental cash flow information	Three Months Ended
	March 31,
	2020		2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	4.4	$	4.1
Operating cash flows from finance leases	0.5		0.5
Financing cash flows from finance leases	0.3		0.3
Non-cash amounts for lease liabilities arising from obtaining right-of-use assets:
Operating leases	$	0.6	$	0.1
Finance leases	0.3		0.5

Supplemental Balance Sheet Disclosures [Text Block]

Supplemental balance sheet information
	Classification	March 31, 2020			December 31, 2019
Lease ROU Assets
Operating lease assets	Operating lease right-of-use assets	$	70.4		$	73.1
Finance lease assets	Property, plant and equipment, net	26.7			26.5
Accumulated depreciation		(11.4		)	(11.1		)
Total lease ROU assets		$	85.7		$	88.5
Lease Liabilities
Current operating lease liabilities	Other accrued liabilities	$	14.0		$	13.9
Current finance lease liabilities	Short-term debt	1.6			1.4
Total current lease liabilities		15.6			15.3
Non-current operating lease liabilities	Long-term operating lease liabilities	62.7			65.6
Non-current finance lease liabilities	Long-term debt	20.4			20.6
Total non-current lease liabilities		83.0			86.2
Total operating lease liabilities		76.7			79.5
Total finance lease liabilities		22.0			22.0
Total lease liabilities		$	98.6		$	101.5