Income Taxes (Tables)

6 Months Ended

Oct. 28, 2016

Income Tax Disclosure [Abstract]

Effective Tax Rates

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

	Six Months Ended
	October 28, 2016			October 30, 2015
Effective tax rates		26.1	%		31.1	%

Unrecognized Tax Benefits

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

	Six Months Ended
	October 28, 2016			October 30, 2015
Balance at beginning of period	$	216		$	272
Additions based on tax positions related to the current year		3			7
Additions for tax positions of prior years		5			20
Decreases for tax positions of prior years		—			(38	)
Settlements		(12	)		(52	)
Balance at end of period	$	212		$	209