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