Fair Value Measurements, Assets and Liabilities (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Sep. 28, 2013	Dec. 31, 2012
Assets
Cash equivalents	$ 869.5	$ 73.6
Investments in mutual funds, unit trusts and other similar instruments	9.6	36.6
Insurance contracts	70.6	62.5
Auction rate securities	4.2	4.3
Derivative contracts	11.2	1.6
Total Assets	965.1	178.6
Liabilities
Derivative contracts	3.3	0.8
Contingent consideration	32.9	20.1
Total Liabilities	36.2	20.9
Quoted Prices in Active Markets (Level I) [Member]
Assets
Cash equivalents	869.5	73.6
Investments in mutual funds, unit trusts and other similar instruments	9.6	36.6
Total Assets	879.1	110.2
Significant Other Observable Inputs (Level 2) [Member]
Assets
Insurance contracts	70.6	62.5
Derivative contracts	11.2	1.6
Total Assets	81.8	64.1
Liabilities
Derivative contracts	3.3	0.8
Total Liabilities	3.3	0.8
Significant Unobservable Inputs (Level 3) [Member]
Assets
Auction rate securities	4.2	4.3
Total Assets	4.2	4.3
Liabilities
Contingent consideration	32.9	20.1
Total Liabilities	$ 32.9	$ 20.1