Comprehensive Income and Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Items, Beginning Balance			$ (1,285.0)
Other comprehensive income (loss) before reclassifications			(609.1)
Amounts reclassified from accumulated other comprehensive items			7.7
Total other comprehensive items	$ (291.3)	$ (612.6)	(601.4)	$ (647.1)
Accumulated Other Comprehensive Items, Ending Balance	$ (1,886.4)		$ (1,886.4)
Class of Stock Disclosures [Abstract]
Preferred Stock, $100 Par Value - Shares Authorized (in shares)	50,000		50,000		50,000
Preferred Stock, $100 Par Value - Par Value (in dollars per share)	$ 100		$ 100		$ 100
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Items, Beginning Balance			$ (1,070.6)
Other comprehensive income (loss) before reclassifications			(605.6)
Total other comprehensive items			(605.6)
Accumulated Other Comprehensive Items, Ending Balance	$ (1,676.2)		(1,676.2)
Unrealized Gains on Available-for-Sale Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Items, Beginning Balance			1.3
Other comprehensive income (loss) before reclassifications			(0.2)
Amounts reclassified from accumulated other comprehensive items			0.0
Total other comprehensive items			(0.2)
Accumulated Other Comprehensive Items, Ending Balance	1.1		1.1
Unrealized Gains (Losses) on Hedging Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Items, Beginning Balance			(20.9)
Other comprehensive income (loss) before reclassifications			(5.7)
Amounts reclassified from accumulated other comprehensive items			2.5
Total other comprehensive items			(3.2)
Accumulated Other Comprehensive Items, Ending Balance	(24.1)		(24.1)
Pension and Other Postretirement Benefit Liability Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Items, Beginning Balance			(194.8)
Other comprehensive income (loss) before reclassifications			2.4
Amounts reclassified from accumulated other comprehensive items			5.2
Total other comprehensive items			7.6
Accumulated Other Comprehensive Items, Ending Balance	$ (187.2)		$ (187.2)