Fair Value Measurements, Assets and Liabilities (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Jun. 29, 2013	Dec. 31, 2012
Assets
Cash equivalents	$ 667.2	$ 73.6
Investments in mutual funds, unit trusts and other similar instruments	9.4	36.6
Insurance contracts	67.4	62.5
Auction rate securities	4.2	4.3
Derivative contracts	13.1	1.6
Total Assets	761.3	178.6
Liabilities
Derivative contracts	0.5	0.8
Contingent consideration	33.7	20.1
Total Liabilities	34.2	20.9
Quoted Prices in Active Markets (Level I) [Member]
Assets
Cash equivalents	667.2	73.6
Investments in mutual funds, unit trusts and other similar instruments	9.4	36.6
Total Assets	676.6	110.2
Significant Other Observable Inputs (Level 2) [Member]
Assets
Insurance contracts	67.4	62.5
Derivative contracts	13.1	1.6
Total Assets	80.5	64.1
Liabilities
Derivative contracts	0.5	0.8
Total Liabilities	0.5	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	33.7	20.1
Total Liabilities	$ 33.7	$ 20.1