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Borrowing Facilities and Debt (Debt Outstanding) (Details) - USD ($) $ in Millions	Oct. 25, 2020	Jun. 30, 2020	May 31, 2020	Oct. 27, 2019
Schedule of debt
Current portion of long-term debt	$ 0			$ 600
Long-term debt, net of current portion	5,448			4,713
Total long-term debt, net of current portion	5,448			5,313
Senior Notes
Schedule of debt
Long-term debt principal amount	5,500			4,750
Total unamortized discount	(15)			(10)
Total unamortized debt issuance costs	$ (37)			(27)
Senior Notes \| 2.625% Senior Notes Due 2020
Debt Instrument [Line Items]
Stated interest rate	2.625%	2.625%
Schedule of debt
Current portion of long-term debt	$ 0			600
Effective interest rate	2.64%
Senior Notes \| 4.300% Senior Notes Due 2021
Debt Instrument [Line Items]
Stated interest rate	4.30%	4.30%
Schedule of debt
Long-term debt principal amount	$ 0			750
Effective interest rate	4.326%
Senior Notes \| 3.900% Senior Notes Due 2025
Debt Instrument [Line Items]
Stated interest rate	3.90%
Schedule of debt
Long-term debt principal amount	$ 700			700
Effective interest rate	3.944%
Senior Notes \| 1.750% Senior Notes Due 2030
Debt Instrument [Line Items]
Stated interest rate	1.75%		1.75%
Schedule of debt
Long-term debt principal amount	$ 750		$ 750	0
Effective interest rate	1.792%
Senior Notes \| 3.300% Senior Notes Due 2027
Debt Instrument [Line Items]
Stated interest rate	3.30%
Schedule of debt
Long-term debt principal amount	$ 1,200			1,200
Effective interest rate	3.342%
Senior Notes \| 5.100% Senior Notes Due 2035
Debt Instrument [Line Items]
Stated interest rate	5.10%
Schedule of debt
Long-term debt principal amount	$ 500			500
Effective interest rate	5.127%
Senior Notes \| 5.850% Senior Notes Due 2041
Debt Instrument [Line Items]
Stated interest rate	5.85%
Schedule of debt
Long-term debt principal amount	$ 600			600
Effective interest rate	5.879%
Senior Notes \| 4.350% Senior Notes Due 2047
Debt Instrument [Line Items]
Stated interest rate	4.35%
Schedule of debt
Long-term debt principal amount	$ 1,000			1,000
Effective interest rate	4.361%
Senior Notes \| 2.750% Senior Notes Due 2050
Debt Instrument [Line Items]
Stated interest rate	2.75%		2.75%
Schedule of debt
Long-term debt principal amount	$ 750		$ 750	$ 0
Effective interest rate	2.773%