Accumulated Other Comprehensive Income - Changes in AOCI (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Accumulated other comprehensive income (loss):
Balance - beginning of period	$ 499.0	$ 388.0
Other comprehensive income (loss) before reclassifications	1.0	(147.5)
Reclassification adjustments to earnings	3.8	5.3
Net other comprehensive income (loss)	4.8	(142.2)
Balance - end of period	494.2	530.2
Currency translation adjustment
Accumulated other comprehensive income (loss):
Balance - beginning of period	70.5	(29.4)
Other comprehensive income (loss) before reclassifications	7.6	(194.5)
Reclassification adjustments to earnings	0	0
Net other comprehensive income (loss)	7.6	(194.5)
Balance - end of period	62.9	165.1
Unrealized (losses) gains on cash flow hedges, net of tax
Accumulated other comprehensive income (loss):
Balance - beginning of period	77.3	93.5
Other comprehensive income (loss) before reclassifications	(1.5)	3.0
Reclassification adjustments to earnings	2.3	3.5
Net other comprehensive income (loss)	0.8	6.5
Balance - end of period	76.5	87.0
Unrealized (losses) gains on net investment hedges, net of tax
Accumulated other comprehensive income (loss):
Balance - beginning of period	(76.8)	(63.3)
Other comprehensive income (loss) before reclassifications	(6.7)	36.5
Reclassification adjustments to earnings	0	0
Net other comprehensive income (loss)	(6.7)	36.5
Balance - end of period	(83.5)	(26.8)
Pension (losses) gains, net of tax
Accumulated other comprehensive income (loss):
Balance - beginning of period	(274.4)	(260.6)
Other comprehensive income (loss) before reclassifications	1.6	7.5
Reclassification adjustments to earnings	1.5	1.8
Net other comprehensive income (loss)	3.1	9.3
Balance - end of period	$ (271.3)	$ (251.3)