Financing Arrangements , Short-term Debt (Details) - USD ($)	12 Months Ended
Apr. 28, 2017	Apr. 29, 2016
Short-term Debt [Line Items]
Current debt obligations	$ 7,520,000,000	$ 993,000,000
Debt premium, net	$ 26,000,000	0
Three-year term loan
Short-term Debt [Line Items]
Debt term	3 years
Current debt obligations	$ 3,000,000,000	0
Bank borrowings
Short-term Debt [Line Items]
Current debt obligations	396,000,000	387,000,000
Capital lease obligations
Short-term Debt [Line Items]
Current debt obligations	5,000,000	106,000,000
Commercial paper \| Commercial paper
Short-term Debt [Line Items]
Current debt obligations	$ 901,000,000	0
Senior notes \| 6.000 percent ten-year 2008 CIFSA senior notes
Short-term Debt [Line Items]
Stated interest rate	6.00%
Debt term	10 years
Current debt obligations	$ 1,150,000,000	0
Senior notes \| 1.500 percent three-year 2015 senior notes
Short-term Debt [Line Items]
Stated interest rate	1.50%
Debt term	3 years
Current debt obligations	$ 1,000,000,000	0
Senior notes \| 1.375 percent five-year 2013 senior notes
Short-term Debt [Line Items]
Stated interest rate	1.375%
Debt term	5 years
Current debt obligations	$ 1,000,000,000	0
Senior notes \| 3.500 percent seven-year 2010 HTWR senior notes
Short-term Debt [Line Items]
Stated interest rate	3.50%
Debt term	7 years
Current debt obligations	$ 42,000,000	0
Senior notes \| Floating rate three-year 2014 senior notes
Short-term Debt [Line Items]
Debt term	3 years
Current debt obligations	$ 0	250,000,000
Senior notes \| 0.875 percent three-year 2014 senior notes
Short-term Debt [Line Items]
Stated interest rate	0.875%
Debt term	3 years
Current debt obligations	$ 0	$ 250,000,000

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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+ References

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