Fair Value Measurements, Assets and Liabilities (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Sep. 26, 2015	Dec. 31, 2014
Assets
Cash equivalents	$ 65.8	$ 617.3
Bank time deposits	2.0	8.5
Investments in mutual funds, unit trusts and other similar instruments	7.4	8.7
Insurance contracts	105.2	102.5
Derivative contracts	25.2	20.2
Total Assets	205.6	757.2
Liabilities
Derivative contracts	27.4	10.4
Contingent consideration	2.3	29.6
Total Liabilities	29.7	40.0
Quoted Prices in Active Markets (Level I) [Member]
Assets
Cash equivalents	65.8	617.3
Bank time deposits	2.0	8.5
Investments in mutual funds, unit trusts and other similar instruments	7.4	8.7
Total Assets	75.2	634.5
Significant Other Observable Inputs (Level 2) [Member]
Assets
Insurance contracts	105.2	102.5
Derivative contracts	25.2	20.2
Total Assets	130.4	122.7
Liabilities
Derivative contracts	27.4	10.4
Total Liabilities	27.4	10.4
Significant Unobservable Inputs (Level 3) [Member]
Liabilities
Contingent consideration	2.3	29.6
Total Liabilities	$ 2.3	$ 29.6