INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of Income Tax Expense

Our income tax expense is summarized below:

	2016		2015		2014
	(in millions)
Current state	$	1.8	$	5.6	$	5.5
Deferred state		(0.9)		(0.7)		4.1
Total income tax expense	$	0.9	$	4.9	$	9.6

Effective Income Tax Rate Reconciliation

Our effective tax rate for the years ended December 31, 2016, 2015 and 2014, is as follows:

	2016			2015			2014
	(in millions)
Income (loss) before income tax expense	$	(40.4)		$	459.2		$	749.6
State income tax expense	$	0.9		$	4.9		$	9.6
Effective income tax rate		(2.2)	%		1.1	%		1.3	%

Unrecognized Tax Schedule

The following is a reconciliation of our beginning and ending balance of unrecognized tax benefits in millions:

	2016		2015		2014
	(in millions)
Unrecognized tax benefits at January 1	$	36.5	$	33.2	$	29.8
Additions for tax positions taken in current period		2.3		3.3		3.4
Unrecognized tax benefits at December 31	$	38.8	$	36.5	$	33.2