FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Table of financial instruments measured at fair value

The following table summarizes the assets and liabilities measured at fair value in the condensed balance sheets:

	Fair Value Measurements
Balance at March 31, 2016	Level 1		Level 2		Level 3		Total
Assets	($ in millions)
Interest rate swaps	$	—	$	0.5	$	—	$	0.5
Liabilities
Interest rate swaps	$	—	$	0.9	$	—	$	0.9
Commodity forward contracts	—		6.7		—		6.7
Foreign exchange contracts	—		1.5		—		1.5
Balance at December 31, 2015
Assets
Interest rate swaps	$	—	$	1.1	$	—	$	1.1
Foreign exchange contracts	—		0.1		—		0.1
Liabilities
Interest rate swaps	$	—	$	1.6	$	—	$	1.6
Commodity forward contracts	—		11.6		—		11.6
Balance at March 31, 2015
Assets
Interest rate swaps	$	—	$	2.9	$	—	$	2.9
Liabilities
Interest rate swaps	$	—	$	3.8	$	—	$	3.8
Commodity forward contracts	—		8.8		—		8.8

Fair value of debt table

The following table summarizes the fair value measurements of debt and the actual debt recorded on our condensed balance sheets:

	Fair Value Measurements								Amount recorded on balance sheets
	Level 1		Level 2		Level 3		Total
	($ in millions)
Balance at March 31, 2016	$	—	$	3,778.5	$	153.0	$	3,931.5	$	3,833.0
Balance at December 31, 2015	—		3,826.9		153.0		3,979.9		3,848.8
Balance at March 31, 2015	—		538.7		153.0		691.7		665.1