Equity (Tables)

6 Months Ended

Jun. 30, 2016

Equity [Abstract]

Schedule of Stockholders Equity [Table Text Block]

The activity in equity during the six months ended June 30, 2016 and 2015 is as follows (dollars in millions):

	Common Stock			Accumulated Other Comprehensive Loss			Retained Earnings
	Shares	Amount								Total
Balances as of December 31, 2015	88,792,751	$	1,196	$	(8	)	$	1,070		$	2,258
Issuances of shares pursuant to equity-based plans	128,005	1		—			—			1
Stock-based compensation	—	1		—			—			1
Dividends declared	—	—		—			(55		)	(55		)
Net income	—	—		—			98			98
Balances as of June 30, 2016	88,920,756	$	1,198	$	(8	)	$	1,113		$	2,303
Balances as of December 31, 2014	78,228,339	$	918	$	(7	)	$	1,000		$	1,911
Issuances of common stock, net of issuance costs of $12	10,400,000	271		—			—			271
Issuances of shares pursuant to equity-based plans	137,290	1		—			—			1
Stock-based compensation	—	1		—			—			1
Dividends declared	—	—		—			(48		)	(48		)
Net income	—	—		—			85			85
Balances as of June 30, 2015	88,765,629	$	1,191	$	(7	)	$	1,037		$	2,221