FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Sep. 30, 2020

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 September 30, 2020	Level 1		Level 2		Level 3		Total
Assets	($ in millions)
Commodity contracts	$	—	$	24.3	$	—	$	24.3
Foreign exchange contracts	—		1.4		—		1.4
Total assets	$	—	$	25.7	$	—	$	25.7
Liabilities
Commodity contracts	$	—	$	0.1	$	—	$	0.1
Foreign exchange contracts	—		0.6		—		0.6
Total liabilities	$	—	$	0.7	$	—	$	0.7
Balance at December 31, 2019
Assets
Commodity contracts	$	—	$	2.0	$	—	$	2.0
Foreign exchange contracts	—		0.6		—		0.6
Total assets	$	—	$	2.6	$	—	$	2.6
Liabilities
Commodity contracts	$	—	$	19.6	$	—	$	19.6
Foreign exchange contracts	—		1.2		—		1.2
Total liabilities	$	—	$	20.8	$	—	$	20.8
Balance at September 30, 2019
Assets
Commodity contracts	$	—	$	0.1	$	—	$	0.1
Foreign exchange contracts	—		0.8		—		0.8
Total assets	$	—	$	0.9	$	—	$	0.9
Liabilities
Commodity contracts	$	—	$	21.0	$	—	$	21.0
Foreign exchange contracts	—		0.9		—		0.9
Total liabilities	$	—	$	21.9	$	—	$	21.9

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 September 30, 2020	$	—	$	3,925.7	$	153.0	$	4,078.7	$	3,960.7
Balance at December 31, 2019	—		3,417.5		153.0		3,570.5		3,340.8
Balance at September 30, 2019	—		3,399.6		153.0		3,552.6		3,340.1