Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Jan. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

The following table summarizes the changes in goodwill and other intangible assets during the nine months ended January 31, 2017:

(Dollars in millions)	Goodwill			Other Intangible Assets
Balance at April 30, 2016	$	590		$	595
Acquisitions (Note 14)	182			65
Foreign currency translation adjustment	(26		)	(24		)
Balance at January 31, 2017	$	746		$	636