Fair Value Measurements (Tables)

3 Months Ended

Jul. 31, 2017

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following table summarizes the assets and liabilities measured or disclosed at fair value on a recurring basis:

(Dollars in millions)	Level 1		Level 2		Level 3		Total
April 30, 2017:
Assets:
Currency derivatives	$	—	$	25	$	—	$	25
Liabilities:
Currency derivatives	—		10		—		10
Short-term borrowings	—		211		—		211
Current portion of long-term debt	—		249		—		249
Long-term debt	—		1,752		—		1,752
July 31, 2017:
Assets:
Currency derivatives	—		9		—		9
Liabilities:
Currency derivatives	—		28		—		28
Short-term borrowings	—		258		—		258
Current portion of long-term debt	—		250		—		250
Long-term debt	—		1,792		—		1,792