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Shareholders' Equity (Details) | 12 Months Ended | 35 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Apr. 24, 2020 € / shares $ / shares shares | Apr. 26, 2019 $ / shares shares | Apr. 24, 2020 USD ($) | Apr. 24, 2020 USD ($) $ / shares shares | Mar. 31, 2019 USD ($) | Jun. 30, 2017 USD ($)
Class of Stock [Line Items] |  |  |  |  |  |
Common stock, authorized (in shares) |  | 2,600,000,000 |  | 2,600,000,000 |  |
Common stock, par value (in dollars per share) | $ / shares |  | $ 0.0001 |  | $ 0.0001 |  |
Deferred stock, shares authorized (in shares) |  |  |  | 40,000 |  |
Deferred stock, par value (in euros per share) | € / shares | € 1.00 |  |  |  |  |
Preferred stock, authorized (in shares) |  |  |  | 127,500,000 |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  | $ 0.20 |  |
Deferred stock, issued (in shares) |  |  |  | 0 |  |
Deferred stock, outstanding (in shares) |  |  |  | 0 |  |
Preferred stock, issued (in shares) |  |  |  | 0 |  |
Preferred stock, outstanding (in shares) |  |  |  | 0 |  |
Shares repurchased (in shares) | 12,000,000 | 31,000,000 |  |  |  |
Average repurchase price (in dollars per share) | $ / shares | € 106.22 | $ 91.43 |  |  |  |
Amount authorized for repurchase | $ |  |  |  | $ 11,000,000,000.0 |  | $ 5,000,000,000.0
Incremental amount authorized for repurchase | $ |  |  |  |  | $ 6,000,000,000.0 |
Amount repurchased | $ |  |  | $ 5,000,000,000.0 |  |  |
Amount available for future repurchases | $ |  |  |  | $ 6,000,000,000.0 |  |
Series A Preferred Shares |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Preferred stock, authorized (in shares) |  |  |  | 500,000 |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  | $ 1.00 |  |
Preferred stock, outstanding (in shares) |  |  |  | 1,872 |  |

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