ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Schedule of Changes in Accumulated Other Comprehensive Income Loss

Changes in accumulated other comprehensive income (loss) by component for the three and six months ended June 30, 2016 (Predecessor), were as follows (in millions):

	Cash Flow Hedges
Three Months Ended June 30, 2016 (Predecessor)
Beginning balance, net of tax	$	18.7
Other comprehensive income (loss) before reclassifications:
Change in fair value of derivatives	(8.6		)
Income tax effect	3.1
Net of tax	(5.5		)
Amounts reclassified from accumulated other comprehensive income:
Operating revenue: oil/natural gas production	8.9
Income tax effect	(3.1		)
Net of tax	5.8
Other comprehensive loss, net of tax	(11.3		)
Ending balance, net of tax	$	7.4

	Cash Flow Hedges			Foreign Currency Items			Total
Six Months Ended June 30, 2016 (Predecessor)
Beginning balance, net of tax	$	24.0		$	(6.0	)	$	18.0
Other comprehensive income (loss) before reclassifications:
Change in fair value of derivatives	(4.0		)	—			(4.0		)
Income tax effect	1.4			—			1.4
Net of tax	(2.6		)	—			(2.6		)
Amounts reclassified from accumulated other comprehensive income:
Operating revenue: oil/natural gas production	21.7			—			21.7
Other operational expenses	—			(6.0		)	(6.0		)
Income tax effect	(7.7		)	—			(7.7		)
Net of tax	14.0			(6.0		)	8.0
Other comprehensive income (loss), net of tax	(16.6		)	6.0			(10.6		)
Ending balance, net of tax	$	7.4		$	—		$	7.4