Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 36.2	$ (69.6)	$ 117.0	$ 2.0
Other comprehensive income (loss):
Foreign currency translation adjustments	(165.6)	154.7	(92.6)	220.1
Change in fair value of derivative financial instruments, net of tax	(3.5)	6.9	(4.1)	8.5
Change in fair value of investment securities, net of tax	0.0	(4.8)	0.0	(16.3)
Change in post-retirement and pension liability, net of tax	(0.2)	0.0	(0.4)	0.0
Other comprehensive income (loss), net of tax	(169.3)	156.8	(97.1)	212.3
Comprehensive income (loss)	$ (133.1)	$ 87.2	$ 19.9	$ 214.3

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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