Accumulated Other Comprehensive Income - Changes in AOCI (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014
Accumulated other comprehensive income (loss):
Balance - beginning of period	$ (1,270.2)	$ (499.0)
Other comprehensive (loss) income before reclassifications	(304.6)	(298.2)
Reclassification adjustments to earnings	(6.9)	11.3
Net other comprehensive (loss) income	(311.5)	(286.9)
Balance - end of period	(1,581.7)	(785.9)
Currency translation adjustment and other
Accumulated other comprehensive income (loss):
Balance - beginning of period	(796.8)	(70.5)
Other comprehensive (loss) income before reclassifications	(358.6)	(321.6)
Reclassification adjustments to earnings	0.0	0.0
Net other comprehensive (loss) income	(358.6)	(321.6)
Balance - end of period	(1,155.4)	(392.1)
Unrealized (losses) gains on cash flow hedges, net of tax
Accumulated other comprehensive income (loss):
Balance - beginning of period	(50.9)	(77.3)
Other comprehensive (loss) income before reclassifications	14.1	13.6
Reclassification adjustments to earnings	(15.0)	6.7
Net other comprehensive (loss) income	(0.9)	20.3
Balance - end of period	(51.8)	(57.0)
Unrealized (losses) gains on net investment hedges, net of tax
Accumulated other comprehensive income (loss):
Balance - beginning of period	(37.2)	(76.8)
Other comprehensive (loss) income before reclassifications	23.8	2.2
Reclassification adjustments to earnings	0.0	0.0
Net other comprehensive (loss) income	23.8	2.2
Balance - end of period	(13.4)	(74.6)
Pension (losses) gains, net of tax
Accumulated other comprehensive income (loss):
Balance - beginning of period	(385.3)	(274.4)
Other comprehensive (loss) income before reclassifications	16.1	7.6
Reclassification adjustments to earnings	8.1	4.6
Net other comprehensive (loss) income	24.2	12.2
Balance - end of period	$ (361.1)	$ (262.2)