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
	Jul. 31, 2020	Jul. 26, 2019
Numerator:
Net income attributable to ordinary shareholders	$ 487	$ 864
Denominator:
Basic - weighted average shares outstanding (shares)	1,341.9	1,340.8
Effect of dilutive securities:
Employee stock options (shares)	4.7	6.9
Employee restricted stock units (shares)	2.7	3.5
Other (shares)	0.7	0.7
Diluted - weighted average shares outstanding (shares)	1,350.0	1,351.9
Basic earnings per share (usd per share)	$ 0.36	$ 0.64
Diluted earnings per share (usd per share)	$ 0.36	$ 0.64