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Statements of Cash Flows Additional Information - Supplemental Cash Flows and Non Cash Investing Activities (Detail) - USD ($)
$ in Millions
6 Months Ended
Oct. 28, 2016
Oct. 30, 2015
Non-cash Investing Activities:    
Capital expenditures incurred but not paid $ 35 $ 15
Supplemental Cash Flow Information:    
Income taxes paid, net of refunds 70 94
Interest paid $ 23 $ 20