Accumulated Other Comprehensive Income - Changes in AOCI (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015
Accumulated other comprehensive income (loss):
Balance - beginning of period	$ (1,694.2)	$ (1,270.2)
Other comprehensive (loss) income before reclassifications	(13.0)	(185.0)
Reclassification adjustments to earnings	(4.0)	(0.1)
Net other comprehensive (loss) income	(17.0)	(185.1)
Balance - end of period	(1,711.2)	(1,455.3)
Currency translation adjustment and other
Accumulated other comprehensive income (loss):
Balance - beginning of period	(1,300.9)	(796.8)
Other comprehensive (loss) income before reclassifications	(5.1)	(225.4)
Reclassification adjustments to earnings	0.0	0.0
Net other comprehensive (loss) income	(5.1)	(225.4)
Balance - end of period	(1,306.0)	(1,022.2)
Unrealized losses on cash flow hedges, net of tax
Accumulated other comprehensive income (loss):
Balance - beginning of period	(52.1)	(50.9)
Other comprehensive (loss) income before reclassifications	(43.4)	32.1
Reclassification adjustments to earnings	(9.8)	(6.0)
Net other comprehensive (loss) income	(53.2)	26.1
Balance - end of period	(105.3)	(24.8)
Unrealized gains on net investment hedges, net of tax
Accumulated other comprehensive income (loss):
Balance - beginning of period	11.8	(37.2)
Other comprehensive (loss) income before reclassifications	23.7	(1.5)
Reclassification adjustments to earnings	0.0	0.0
Net other comprehensive (loss) income	23.7	(1.5)
Balance - end of period	35.5	(38.7)
Pension (losses) gains, net of tax
Accumulated other comprehensive income (loss):
Balance - beginning of period	(353.0)	(385.3)
Other comprehensive (loss) income before reclassifications	11.8	9.8
Reclassification adjustments to earnings	5.8	5.9
Net other comprehensive (loss) income	17.6	15.7
Balance - end of period	$ (335.4)	$ (369.6)