Equity (Tables)

6 Months Ended

Jun. 30, 2019

Equity [Abstract]

Schedule of Stockholders Equity [Table Text Block]

The activity in equity during the three and six-month periods ended June 30, 2019 and 2018 was as follows (dollars in millions, except per share amounts):

	Common Stock				Accumulated Other Comprehensive Loss			Retained Earnings
	Shares	Amount									Total
Balances as of December 31, 2018	89,267,959	$	1,212		$	(7	)	$	1,301		$	2,506
Issuances of shares pursuant to equity-based plans	88,352	—			—			—			—
Other comprehensive income	—	—			1			—			1
Dividends declared ($0.3625 per share)	—	—			—			(32		)	(32		)
Net income	—	—			—			73			73
Reclassification of stranded tax effects due to Tax Reform	—	—			(2		)	2			—
Balances as of March 31, 2019	89,356,311	$	1,212		$	(8	)	$	1,344		$	2,548
Issuances of shares pursuant to equity-based plans	15,249	1			—			—			1
Stock-based compensation	—	2			—			—			2
Other comprehensive income	—	—			1			—			1
Dividends declared ($0.3850 per share)	—	—			—			(35		)	(35		)
Net income	—	—			—			25			25
Balances as of June 30, 2019	89,371,560	$	1,215		$	(7	)	$	1,334		$	2,542
Balances as of December 31, 2017	89,114,265	$	1,207		$	(8	)	$	1,217		$	2,416
Issuances of shares pursuant to equity-based plans	99,854	—			—			—			—
Stock-based compensation	—	(1		)	—			—			(1		)
Dividends declared ($0.3400 per share)	—	—			—			(30		)	(30		)
Net income	—	—			—			64			64
Balances as of March 31, 2018	89,214,119	$	1,206		$	(8	)	$	1,251		$	2,449
Issuances of shares pursuant to equity-based plans	24,087	—			—			—			—
Stock-based compensation	—	2			—			—			2
Dividends declared ($0.3625 per share)	—	—			—			(32		)	(32		)
Net income	—	—			—			46			46
Balances as of June 30, 2018	89,238,206	$	1,208		$	(8	)	$	1,265		$	2,465