OTHER ASSETS (Tables)

12 Months Ended

Dec. 31, 2017

Other Assets [Abstract]

Schedule of Other Assets

Included in other assets were the following:

	December 31,
	2017		2016
	($ in millions)
Investments in non-consolidated affiliates	$	28.5	$	26.7
Deferred debt issuance costs	2.5		2.6
Tax-related receivables	10.2		17.5
Interest rate swaps	3.6		7.7
Supply contracts	1,137.1		566.7
Other	26.5		23.2
Other assets	$	1,208.4	$	644.4