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. 27, 2018	Jul. 28, 2017
Numerator:
Net income attributable to ordinary shareholders	$ 1,075	$ 1,016
Denominator:
Basic - weighted average shares outstanding (shares)	1,352.7	1,361.9
Effect of dilutive securities:
Employee stock options (shares)	8.4	9.2
Employee restricted stock units (shares)	3.6	4.0
Other (shares)	0.7	0.5
Diluted - weighted average shares outstanding (shares)	1,365.4	1,375.6
Basic earnings per share (usd per share)	$ 0.79	$ 0.75
Diluted earnings per share (usd per share)	$ 0.79	$ 0.74

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Incremental Common Shares Attributable to Dilutive Effect of Other Shares

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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