General (Components of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2015	Sep. 26, 2014	Oct. 02, 2015	Sep. 26, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ (2,032.1)	$ 305.8	$ (1,433.7)	$ 214.5
Increase (decrease)	(176.9)	(696.5)	(775.9)	(571.8)
Income tax impact	8.7	9.8	(4.8)	(18.5)
Other comprehensive income (loss) before reclassifications, net of income taxes	(168.2)	(686.7)	(780.7)	(590.3)
Increase (decrease)	0.7	1.7	21.4	(6.8)
Income tax impact	0.6	(0.6)	(6.0)	2.8
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	1.3	1.1	15.4	(4.0)
Total other comprehensive income (loss), net of income taxes	(166.9)	(685.6)	(765.3)	(594.3)
Ending balance	(2,199.0)	(379.8)	(2,199.0)	(379.8)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(1,456.8)	465.1	(821.8)	413.2
Increase (decrease)	(158.7)	(670.5)	(793.7)	(618.6)
Income tax impact	0.0	0.0	0.0	0.0
Other comprehensive income (loss) before reclassifications, net of income taxes	(158.7)	(670.5)	(793.7)	(618.6)
Increase (decrease)	0.0	0.0	0.0	0.0
Income tax impact	0.0	0.0	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	0.0	0.0	0.0	0.0
Total other comprehensive income (loss), net of income taxes	(158.7)	(670.5)	(793.7)	(618.6)
Ending balance	(1,615.5)	(205.4)	(1,615.5)	(205.4)
Pension and Post-Retirement Plan Benefit Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(713.7)	(364.2)	(727.8)	(366.7)
Increase (decrease)	12.4	0.0	12.4	(5.5)
Income tax impact	(2.8)	0.0	(2.8)	1.1
Other comprehensive income (loss) before reclassifications, net of income taxes	9.6	0.0	9.6	(4.4)
Increase (decrease)	13.1	6.0	33.8	16.7
Income tax impact	(4.0)	(2.2)	(10.6)	(6.0)
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	9.1	3.8	23.2	10.7
Total other comprehensive income (loss), net of income taxes	18.7	3.8	32.8	6.3
Ending balance	(695.0)	(360.4)	(695.0)	(360.4)
Unrealized Gain (Loss) on Available-For-Sale Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	138.4	204.9	115.9	168.0
Increase (decrease)	(30.6)	(26.0)	5.4	52.3
Income tax impact	11.5	9.8	(2.0)	(19.6)
Other comprehensive income (loss) before reclassifications, net of income taxes	(19.1)	(16.2)	3.4	32.7
Increase (decrease)	(12.4)	(4.3)	(12.4)	(23.5)
Income tax impact	4.6	1.6	4.6	8.8
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	(7.8)	(2.7)	(7.8)	(14.7)
Total other comprehensive income (loss), net of income taxes	(26.9)	(18.9)	(4.4)	18.0
Ending balance	$ 111.5	$ 186.0	$ 111.5	$ 186.0