Shareholders' Equity (Tables)

12 Months Ended

Dec. 29, 2017

Stockholders' Equity Note [Abstract]

Schedule of Ordinary Share Activity

The ordinary share activity for the years ended December 29, 2017 and December 30, 2016 is summarized as follows:

	Year ended
	December 29, 2017		December 30, 2016
Ordinary shares issued/(retired) as a result of:
Stock option exercises	59,000		471,653
Restricted stock awards	14,294		22,946
Restricted and performance stock units	251,303		544,577
Ordinary share repurchase and retirement	(2,822,022	)	(2,325,235	)

Schedule of Repurchase Activity

The following represents a summary of repurchase activity during years ended December 29, 2017 and December 30, 2016 (U.S. dollars in millions, except share and per share data):

	Year ended
	December 29, 2017					December 30, 2016
	Shares	USD		Average price per share		Shares	USD		Average price per share
Year ended:	2,822,022	$	142.0	$	50.31	2,325,235	$	106.6	$	45.85

Schedule of Dividends Declared

The following is a summary of the dividends declared per share for the years ended December 29, 2017 and December 30, 2016:

Year ended
December 29, 2017			December 30, 2016
Dividend Declared Date	Cash Dividend Declared, per Ordinary Share		Dividend Declared Date	Cash Dividend Declared, per Ordinary Share
December 8, 2017	$	0.15	December 9, 2016	$	0.15
September 8, 2017	$	0.15	September 9, 2016	$	0.15
June 2, 2017	$	0.15	June 3, 2016	$	0.125
March 31, 2017	$	0.15	April 1, 2016	$	0.125