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. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Numerator:
Net income	$ 145,808	$ 97,828	$ 270,804	$ 166,473
Denominator:
Basic weighted average ordinary shares	202,560,870	194,323,935	202,686,313	193,557,194
Weighted average dilutive share equivalents:
Share options and restricted shares/units	2,593,822	5,868,356	2,860,878	6,234,514
Diluted weighted average ordinary shares	205,154,692	200,192,291	205,547,191	199,791,708
Basic net income per ordinary share	$ 0.72	$ 0.50	$ 1.34	$ 0.86
Diluted net income per ordinary share	$ 0.71	$ 0.49	$ 1.32	$ 0.83