Summary of Quarterly Results (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 30, 2013	Mar. 31, 2012	Apr. 02, 2011
Quarterly Financial Information [Line Items]
Total Revenue	$ 597,154	$ 636,778	$ 532,935	$ 414,865	$ 379,990	$ 373,606	$ 305,532	$ 243,126	$ 2,181,732	$ 1,302,254	$ 803,339
Gross profit	356,215	383,451	315,900	251,000	219,122	221,905	175,100	136,969	1,306,566	753,096	446,065
Income from operations	155,304	204,839	157,928	111,943	78,841	64,587	59,278	44,976	630,014	247,682	136,866
Net income	$ 101,101	$ 130,028	$ 97,828	$ 68,645	$ 43,612	$ 39,031	$ 40,606	$ 24,115	$ 397,602	$ 147,364	$ 72,506
Weighted average ordinary shares outstanding:
Basic	200,080,126	199,291,480	194,323,935	192,790,454	191,184,171	154,738,356	146,555,601	140,554,377	196,615,054	158,258,126	140,554,377
Diluted	203,785,123	202,817,811	200,192,291	199,391,127	196,855,404	193,583,954	187,580,161	179,177,268	201,540,144	189,299,197	179,177,268