Components of Calculation of Basic Net Income Per Ordinary Share and Diluted Net Income Per Ordinary Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 27, 2015	Jun. 28, 2014
Numerator:
Net income	$ 174,355	$ 187,716
Denominator:
Basic weighted average shares	196,977,021	203,749,572
Weighted average dilutive share equivalents:
Share options and restricted shares/units	3,077,473	3,426,671
Diluted weighted average shares	200,054,494	207,176,243
Basic net income per share	$ 0.89	$ 0.92
Diluted net income per share	$ 0.87	$ 0.91