Supplemental Disclosures (Tables)

12 Months Ended

Dec. 31, 2017

SUPPLEMENTAL DISCLOSURES [Abstract]

Allowance for Doubtful Accounts

Analysis of Allowances for Doubtful Accounts:

($ in millions)

	For the Years Ended December 31,
	2017			2016		2015
Allowance for Doubtful Accounts
Beginning balance	$	0.8		$	0.4	$	0.3
Bad debt expense	0.8			0.4		0.2
Write-offs and discounts	(0.6		)	—		(0.1		)
Currency translation	—			—		—
Ending balance	$	1.0		$	0.8	$	0.4

Schedule of Cash Flow, Supplemental Disclosures

Supplemental Cash Flow Information

($ in millions)

	For the Years Ended December 31,
	2017		2016		2015
Interest paid	$	22.7	$	13.3	$	7.8
Income taxes paid	38.1		31.9		9.3
Capital spending in accounts payable and accrued liabilities	7.7		8.8		2.6
Deferred contingent business acquisition consideration	8.6		—		—