Comprehensive (Loss) Income (Accumulated Other Comprehensive (Loss) Income (Net Of Tax)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 30, 2012	Apr. 01, 2011	Dec. 30, 2011	Dec. 31, 2010
Comprehensive (Loss) Income [Abstract]
Unrealized Net Gain (Loss) on Available-for-Sale Securities, Beginning Balance	$ 1.9	$ 0.5	$ 0.5
Unrealized Net Gain (Loss) on Available-for-Sale Securities, Pretax activity, net	1.3	(3.6)
Unrealized Net Gain (Loss) on Available-for-Sale Securities, Tax effect	(0.2)	0.6
Unrealized Net Gain (Loss) on Available-for-Sale Securities, Ending Balance	3.0	(2.5)	1.9	0.5
Other Comprehensive Income Unrealized Gain Loss On Net Investment Hedges, Beginning Balance	14.5	9.4	18.6	16.7
Other Comprehensive Income Unrealized Gain Loss On Net Investment Hedges, Pretax activity net	(4.1)	(7.3)
Other Comprehensive Income Unrealized Gain Loss On Net Investment Hedges Tax effect
Other Comprehensive Income Unrealized Gain Loss On Net Investment Hedges, Ending Balance	14.5	9.4	18.6	16.7
Foreign Currency Translation Adjustments, Beginning Balance	67.5	88.0	88.0
Foreign Currency Translation Adjustments, Pretax activity, net	15.7	35.7
Foreign Currency Translation Adjustments, Ending Balance	83.2	123.7	67.5	88.0
Unrecognized Prior Service Cost, Beginning Balance	(0.2)	(0.3)	(0.3)
Unrecognized Prior Service Cost, Pretax activity, net
Unrecognized Prior Service Cost, Tax effect
Unrecognized Prior Service Cost, Ending Balance	(0.2)	(0.3)	(0.2)	(0.3)
Unrecognized Net Gain (Loss) on Retiree Medical Plan, Beginning Balance	2.0	3.7	3.7
Unrecognized Net Gain (Loss) on Retiree Medical Plan, Pretax activity, net
Unrecognized Net Gain (Loss) on Retiree Medical Plan, Tax effect
Unrecognized Net Gain (Loss) on Retiree Medical Plan, Ending Balance	2.0	3.7	2.0	3.7
Accumulated Other Comprehensive Income, Beginning Balance	89.8	108.6	108.6
Accumulated Other Comprehensive Income, Pretax activity, net	12.9	24.8
Accumulated Other Comprehensive Income, Tax effect	(0.2)	0.6
Accumulated Other Comprehensive Income, Ending Balance	$ 102.5	$ 134.0	$ 89.8	$ 108.6