EARNINGS PER SHARE (Tables)

12 Months Ended

Dec. 31, 2016

EARNINGS PER SHARE

Calculation of basic and diluted EPS

	2016			2015			2014
	(in millions, except per-share amounts)
Basic EPS calculation
Net income (loss)	$	279		$	(3,554	)	$	(1,434	)
Net loss allocated to participating securities	(6		)	—			—
Net income (loss) available to common stockholders	$	273		$	(3,554	)	$	(1,434	)
Weighted-average common shares outstanding - basic	40.4			38.3			38.2
Basic EPS	$	6.76		$	(92.79	)	$	(37.54	)
Diluted EPS calculation
Net income (loss)	$	279		$	(3,554	)	$	(1,434	)
Net loss allocated to participating securities	(6		)	—			—
Net income (loss) available to common stockholders	$	273		$	(3,554	)	$	(1,434	)
Weighted-average common shares outstanding - basic	40.4			38.3			38.2
Dilutive effect of potentially dilutive securities	—			—			—
Weighted-average common shares outstanding - diluted	40.4			38.3			38.2
Diluted EPS	$	6.76		$	(92.79	)	$	(37.54	)