Fair Value Measurements (Tables)

9 Months Ended

Jan. 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, 2016:
Assets:
Currency derivatives	$	—	$	19	$	—	$	19
Liabilities:
Currency derivatives	—		10		—		10
Short-term borrowings	—		271		—		271
Long-term debt	—		1,293		—		1,293
January 31, 2017:
Assets:
Currency derivatives	—		42		—		42
Liabilities:
Currency derivatives	—		11		—		11
Short-term borrowings	—		308		—		308
Current portion of long-term debt	—		249		—		249
Long-term debt	—		1,686		—		1,686