Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Sep. 26, 2015	Oct. 01, 2016	Sep. 26, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (1,590.2)	$ 260.9	$ (2,653.7)	$ 216.4
Other comprehensive income (loss):
Foreign currency translation adjustments	27.5	(39.9)	71.5	50.9
Change in fair value of derivative financial instruments, net of tax	3.6	0.1	(3.5)	5.6
Change in fair value of investment securities, net of tax	9.8	2.5	18.4	(2.4)
Change in post-retirement and pension liability adjustments, net of tax	(0.2)	0.0	0.4	4.7
Other comprehensive income (loss), net of tax	40.7	(37.3)	86.8	58.8
Comprehensive income (loss)	$ (1,549.5)	$ 223.6	$ (2,566.9)	$ 275.2