Income Taxes (Tables)

9 Months Ended

Jan. 29, 2016

Income Tax Disclosure [Abstract]

Effective Tax Rates

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

	Nine Months Ended
	January 29, 2016			January 23, 2015
Effective tax rates		16.8	%		22.5	%

Unrecognized Tax Benefits

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

	Nine Months Ended
	January 29, 2016			January 23, 2015
Balance at beginning of period	$	272		$	236
Additions based on tax positions related to the current year		13			19
Additions for tax positions of prior years		21			102
Decreases for tax positions of prior years		(38	)		(24	)
Settlements		(52	)		(58	)
Balance at end of period	$	216		$	275