OTHER ASSETS (Tables)

9 Months Ended

Sep. 30, 2018

Other Assets [Abstract]

Schedule of Other Assets

Included in other assets were the following:

	September 30, 2018		December 31, 2017		September 30, 2017
	($ in millions)
Investments in non-consolidated affiliates	$	8.3	$	28.5	$	28.2
Deferred debt issuance costs	2.1		2.5		2.7
Tax-related receivables	4.9		10.2		13.1
Derivative contracts	1.6		3.6		3.7
Supply contracts	1,108.9		1,137.1		1,146.3
Other	33.8		26.5		21.6
Other assets	$	1,159.6	$	1,208.4	$	1,215.6