Earnings Per Share - Schedule of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Oct. 25, 2019	Oct. 26, 2018	Oct. 25, 2019	Oct. 26, 2018
Numerator:
Net income attributable to ordinary shareholders	$ 1,364	$ 1,115	$ 2,228	$ 2,190
Denominator:
Basic - weighted average shares outstanding (shares)	1,340.8	1,349.2	1,340.8	1,350.9
Effect of dilutive securities:
Employee stock options (shares)	8.0	8.5	7.4	8.4
Employee restricted stock units (shares)	2.6	3.1	3.1	3.3
Other (shares)	0.0	0.1	0.3	0.4
Diluted - weighted average shares outstanding (shares)	1,351.4	1,360.9	1,351.6	1,363.0
Basic earnings per share (usd per share)	$ 1.02	$ 0.83	$ 1.66	$ 1.62
Diluted earnings per share (usd per share)	$ 1.01	$ 0.82	$ 1.65	$ 1.61