Equity (Tables)

9 Months Ended

Sep. 30, 2015

Equity [Abstract]

Schedule of Stockholders Equity [Table Text Block]

The activity in equity during the nine months ended September 30, 2015 and 2014 is as follows (dollars in millions):

	Common Stock			Accumulated Other Comprehensive Loss			Retained Earnings
	Shares	Amount								Total
Balances as of December 31, 2014	78,228,339	$	918	$	(7	)	$	1,000		$	1,911
Issuance of common stock, net of issuance costs of $12	10,400,000	271		—			—			271
Issuances of shares pursuant to equity-based plans	143,833	1		—			—			1
Stock-based compensation	—	3		—			—			3
Dividends declared	—	—		—			(75		)	(75		)
Net income	—	—		—			121			121
Balances as of September 30, 2015	88,772,172	$	1,193	$	(7	)	$	1,046		$	2,232
Balances as of December 31, 2013	78,085,559	$	911	$	(5	)	$	913		$	1,819
Issuances of shares pursuant to equity-based plans	123,869	1		—			—			1
Stock-based compensation	—	4		—			—			4
Dividends declared	—	—		—			(67		)	(67		)
Net income	—	—		—			132			132
Balances as of September 30, 2014	78,209,428	$	916	$	(5	)	$	978		$	1,889