Accumulated Other Comprehensive Income (Loss) [Roll Forward]

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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- Definition

Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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- Definition

Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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Accumulated Other Comprehensive Loss - Changes in AOCI (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 29, 2019	Mar. 30, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 29, 2019	Jun. 30, 2018
Accumulated other comprehensive income (loss):
Balance - beginning of period		$ (1,814.3)		$ (1,589.1)	$ (1,814.3)	$ (1,589.1)
Other comprehensive income (loss) before reclassifications					4.0	(194.9)
Reclassification adjustments to earnings					(3.7)	11.6
Net other comprehensive income (loss)	$ (0.7)	1.0	$ (279.1)	95.8	0.3	(183.3)
Balance - end of period	(1,814.0)		(1,772.4)		(1,814.0)	(1,772.4)
Currency translation adjustment and other
Accumulated other comprehensive income (loss):
Balance - beginning of period		(1,481.2)		(1,108.2)	(1,481.2)	(1,108.2)
Other comprehensive income (loss) before reclassifications					2.8	(294.9)
Reclassification adjustments to earnings					0.0	0.0
Net other comprehensive income (loss)					2.8	(294.9)
Balance - end of period	(1,478.4)		(1,403.1)		(1,478.4)	(1,403.1)
Unrealized (losses) gains on cash flow hedges, net of tax
Accumulated other comprehensive income (loss):
Balance - beginning of period		(26.8)		(112.6)	(26.8)	(112.6)
Other comprehensive income (loss) before reclassifications					(21.2)	43.6
Reclassification adjustments to earnings					3.2	11.7
Net other comprehensive income (loss)					(18.0)	55.3
Balance - end of period	(44.8)		(57.3)		(44.8)	(57.3)
Unrealized gains (losses) on net investment hedges, net of tax
Accumulated other comprehensive income (loss):
Balance - beginning of period		63.3		3.4	63.3	3.4
Other comprehensive income (loss) before reclassifications					21.6	49.3
Reclassification adjustments to earnings					(12.7)	(5.9)
Net other comprehensive income (loss)					8.9	43.4
Balance - end of period	72.2		46.8		72.2	46.8
Pension (losses) gains, net of tax
Accumulated other comprehensive income (loss):
Balance - beginning of period		$ (369.6)		$ (371.7)	(369.6)	(371.7)
Other comprehensive income (loss) before reclassifications					0.8	7.1
Reclassification adjustments to earnings					5.8	5.8
Net other comprehensive income (loss)					6.6	12.9
Balance - end of period	$ (363.0)		$ (358.8)		$ (363.0)	$ (358.8)