SHARE INCENTIVE PLANS: (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended			0 Months Ended
	Dec. 31, 2013 item	Dec. 31, 2012	Dec. 31, 2011	Jan. 02, 2014	Jan. 02, 2013	Jan. 02, 2012
SHARE INCENTIVE PLANS:
Number of share option plans	7
Stock options
Stock option activity under equity incentive plans
Options outstanding at the beginning of the period (in shares)	3,285,922	4,706,349	5,434,974		3,285,922	4,706,349
Options Granted (in shares)	31,653	879,160	1,060,938
Options exercised (in shares)	(376,588)	(2,161,628)	(1,586,577)
Options cancelled (in shares)	(134,763)	(137,959)	(202,986)
Options outstanding at the end of the period (in shares)	2,806,224	3,285,922	4,706,349
Weighted average exercise price of options outstanding
Options outstanding at the beginning of the period (in dollars per share)	29.74	$ 13.42	$ 10.56		29.74	13.42
Options granted (in dollars per share)	18.30	$ 70.72	$ 21.80
Options exercised (in dollars per share)	14.08	$ 10.96	$ 8.83
Options cancelled (in dollars per share)	62.47	$ 28.33	$ 16.46
Options outstanding at the end of the period (in dollars per share)	30.14	$ 29.74	$ 13.42
Weighted average fair value of options granted (in dollars per share)	8.91	$ 38.66	$ 18.51
Total pretax intrinsic value of options exercised	12.9	$ 136.1
Closing price of ordinary shares (in dollars per share)	39.97	$ 59.38
Total pretax intrinsic value of all outstanding options	51.8	112.4
Total pretax intrinsic value of all exercisable options	48.6	$ 88.4
Global Plan
Share option plans
Maximum annual percentage increase in ordinary shares reserved for issuance	2.00%
Maximum annual increase in ordinary shares reserved for issuance	685,714
Maximum shares that can be issued and transferred	15,474,018
Increase in shares reserved for issuance				685,714	685,714	685,714
Assumption Plan
Share option plans
Maximum annual increase in ordinary shares reserved for issuance			281,625
Increase in shares reserved for issuance				281,625	281,625
Kotura Plan
Stock option activity under equity incentive plans
Options Granted (in shares)	31,653