EARNINGS PER SHARE (Tables)

12 Months Ended

Dec. 31, 2015

Earnings Per Share [Abstract]

Schedule of earnings per share

	Year Ended December 31,
(dollars in millions, except share and per-share data)	2015		2014		2013
Numerator (basic and diluted):
Net income (loss)		$840		$865		($3,426	)
Less: Preferred stock dividends	7		—		—
Net income (loss) available to common stockholders		$833		$865		($3,426	)
Denominator:
Weighted-average common shares outstanding - basic	535,599,731		556,674,146		559,998,324
Dilutive common shares: share-based awards	2,621,167		1,050,790		—
Weighted-average common shares outstanding - diluted	538,220,898		557,724,936		559,998,324
Earnings (loss) per common share:
Basic		$1.55		$1.55		($6.12	)
Diluted	1.55		1.55		(6.12		)