Shareholders' Equity - Additional Information (Details) - USD ($)	3 Months Ended	6 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Oct. 01, 2016	May 25, 2017
Equity, Class of Treasury Stock [Line Items]
Ordinary shares repurchased, value		$ 160,900,000
Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Share repurchase program, authorized amount				$ 1,000,000,000
Ordinary shares repurchased (in shares)	0	4,543,500	13,044,832
Ordinary shares repurchased, value		$ 157,800,000	$ 650,000,000
Ordinary shares repurchased, remaining availability	$ 842,200,000	$ 842,200,000
Withhold to Cover Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Ordinary shares repurchased (in shares)		91,122	99,739
Ordinary shares repurchased, value		$ 3,100,000	$ 4,700,000