ALLOWANCE FOR DOUBTFUL ACCOUNTS RECEIVABLES (Tables)

6 Months Ended

Jun. 30, 2017

Accounts Receivable, Net [Abstract]

Allowance for Doubtful Accounts Receivable

Allowance for doubtful accounts receivable consisted of the following:

	June 30,
	2017		2016
	($ in millions)
Balance at beginning of year	$	10.1	$	6.4
Provisions charged	2.1		2.2
Write-offs, net of recoveries	—		(0.8		)
Balance at end of period	$	12.2	$	7.8