INCOME TAXES (Tables)

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Unrecognized Tax Benefits

The amount of unrecognized tax benefits was as follows:

	March 31,
	2018		2017
	($ in millions)
Balance at beginning of year	$	36.3	$	38.4
Increases for prior year tax positions	—		4.9
Decreases for prior year tax positions	—		(0.7		)
Increases for current year tax positions	0.5		0.7
Balance at end of period	$	36.8	$	43.3

Tax Returns Subject to Examination

For our primary tax jurisdictions, the tax years that remain subject to examination are as follows:

	Tax Years
U.S. federal income tax	2013 - 2017
U.S. state income tax	2006 - 2017
Canadian federal income tax	2012 - 2017
Brazil	2014 - 2017
Germany	2015 - 2017
China	2014 - 2017
The Netherlands	2014 - 2017