Shareholders' Equity (Detail) - USD ($) $ / shares in Units, $ in Millions										3 Months Ended									12 Months Ended
	Jul. 29, 2015	Dec. 05, 2014	Sep. 05, 2014	May 30, 2014	Mar. 28, 2014	Dec. 06, 2013	Sep. 06, 2013	May 31, 2013	Mar. 29, 2013	Dec. 30, 2016	Sep. 30, 2016	Jul. 01, 2016	Apr. 01, 2016	Jan. 01, 2016		Sep. 25, 2015	Jun. 26, 2015	Mar. 27, 2015	Dec. 30, 2016	Jan. 01, 2016	Dec. 26, 2014	Feb. 21, 2017
Subsequent Event [Line Items]
Preferred shares, shares authorized (shares)										50,000,000				50,000,000					50,000,000	50,000,000
Preferred shares, par value (usd per share)										$ 0.01				$ 0.01					$ 0.01	$ 0.01
Preferred shares, issued (shares)										0				0					0	0
Preferred shares, outstanding (shares)										0				0					0	0
Ordinary shares, authorized (shares)										200,000,000				200,000,000					200,000,000	200,000,000
Ordinary shares, par value (usd per share)										$ 0.01				$ 0.01					$ 0.01	$ 0.01
Ordinary shares, issued (shares)										51,256,906				52,542,965					51,256,906	52,542,965
Ordinary shares, outstanding (shares)										51,256,906				52,542,965					51,256,906	52,542,965
Ordinary shares issued/ (retired) as a result of:
Stock option exercises (shares)																			471,653	1,320,103	1,945,939
Restricted share grants (shares)																			22,946	21,875
Exercises of stock options (shares)																			544,577	239,624
Stock repurchased during period (shares)																			2,325,235	2,938,560
Stock repurchase program, term	3 years
Total stock repurchase program, authorized repurchase amount	$ 300.0
Stock repurchase program, value of ordinary shares repurchased and retired										$ 398.4									$ 398.4
Stock repurchase program, ordinary shares repurchased and retired (shares)										11,400,000.0									11,400,000.0
Common stock repurchase program, maximum remaining amount										$ 201.6									$ 201.6
Stock Repurchase Program:
Stock repurchase program, ordinary shares value																			$ 106.6	$ 103.9
Stock repurchase program, average purchase price (usd per share)																			$ 45.85	$ 35.34
Dividends:
Dividends declared per ordinary share (usd per share)		$ 0.150	$ 0.150	$ 0.125	$ 0.125	$ 0.125	$ 0.125	$ 0.125	$ 0.125	$ 0.150	$ 0.150	$ 0.125	$ 0.125	$ 0.125	[1],[2]	$ 0.125	$ 0.125	$ 0.125	$ 0.55	$ 0.50	$ 0.50
Payments of dividends, common stock																			$ 28.2	$ 26.2	$ 27.9
Subsequent Event
Ordinary shares issued/ (retired) as a result of:
Stock repurchase program, ordinary shares repurchased and retired (shares)																						0

[1] Based on the annual impairment review of goodwill performed in 2015 and due to the failure of the tomato business in North America to meet our expectations, we wrote-off $66.1 million of goodwill for the quarter ended January 1, 2016, which was related to the 2003 tomato and vegetable business acquisition.

[2] Diluted earnings per share for the quarter ended January 1, 2016 excludes the impact of antidilutive share-based payment awards for 483,178 ordinary shares, as they were antidilutive.