Income Taxes (Tables)

3 Months Ended

Jul. 31, 2015

Income Tax Disclosure [Abstract]

Effective Tax Rates

Our effective tax rates for the periods presented were as follows:

	Three Months Ended
	July 31, 2015			July 25, 2014
Effective tax rates		(36.4	)%		44.6	%

Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):

	Three Months Ended
	July 31, 2015			July 25, 2014
Balance at beginning of period	$	272		$	236
Additions based on tax positions related to the current year		4			7
Additions for tax positions of prior years		19			99
Decreases for tax positions of prior years		(5	)		(19	)
Settlements		(47	)		(46	)
Balance at end of period	$	243		$	277