Components of Calculation of Basic Net Income Per Ordinary Share and Diluted Net Income Per Ordinary Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Numerator:
Net income	$ 206,990	$ 145,808	$ 394,706	$ 270,804
Denominator:
Basic weighted average ordinary shares	204,464,952	202,560,870	204,107,262	202,686,313
Weighted average dilutive share equivalents:
Share options and restricted shares/units	2,967,298	2,593,822	3,196,985	2,860,878
Diluted weighted average ordinary shares	207,432,250	205,154,692	207,304,247	205,547,191
Basic net income per ordinary share	$ 1.01	$ 0.72	$ 1.93	$ 1.34
Diluted net income per ordinary share	$ 1.00	$ 0.71	$ 1.90	$ 1.32