Discontinued Operations (Tables)

9 Months Ended

Sep. 30, 2018

Discontinued Operations and Disposal Groups [Abstract]

Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]

Discontinued operations are summarized as follows:

	Three Months Ended September 30				Nine Months Ended September 30
	2018		2017		2018			2017
	(Dollars in Millions)
Selling, general and administrative expenses	$	—	$	—	$	(1	)	$	—
Restructuring expense	—		—		(1		)	—
Gain on divestitures	1		—		4			7
Income tax benefit	—		—		—			1
Income from discontinued operations, net of tax	$	1	$	—	$	2		$	8