Fair Value of Financial Instruments (Tables)

12 Months Ended

Apr. 30, 2015

Fair Value of Financial Instruments [Abstract]

Comparison of the fair values and carrying amounts of financial instruments

Below is a comparison of the fair values and carrying amounts of these instruments:

	2014				2015
April 30,	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	$	437	$	437	$	370	$	370
Currency derivatives	7		7		59		59
Liabilities:
Currency derivatives	7		7		18		18
Short-term borrowings	8		8		190		190
Current portion of long-term debt	—		—		250		253
Long-term debt	997		963		748		735