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Shareholders' Equity - Additional Information (Detail) - USD ($) |  | 6 Months Ended |  |
--- | --- | --- | --- | ---
Oct. 30, 2014 | Sep. 26, 2015 | Sep. 27, 2014 | Nov. 03, 2015 | May. 20, 2015
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Ordinary shares repurchased, value |  | $ 751,094,000 |  |  |
Share Repurchase Program |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Share repurchase program, authorized amount | $ 1,000,000,000 |  |  |  | $ 500,000,000
Share repurchase program, repurchase period | 2 years |  |  |  |
Ordinary shares repurchased, shares |  | 16,384,737 |  |  |
Ordinary shares repurchased, value |  | $ 750,000,000 |  |  |
Ordinary shares repurchased, remaining availability |  | $ 258,100,000 |  |  |
Withhold to Cover Repurchase Program |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Ordinary shares repurchased, shares |  | 22,540 | 11,022 |  |
Ordinary shares repurchased, value |  | $ 1,100,000 | $ 1,000,000 |  |
Subsequent Event | Share Repurchase Program |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Share repurchase program, authorized amount |  |  |  | $ 500,000,000 |

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