Fair Value Measurements, Assets and Liabilities (Details) (USD $) In Millions	Jul. 02, 2011	Dec. 31, 2010
Assets
Cash equivalents	$ 611.1	$ 301.6
Investments in mutual funds, unit trusts and other similar instruments	37.6	36.3
Insurance contracts	48.9	42.6
Auction rate securities	4.4	4.6
Derivative contracts	92.0	40.1
Total Assets	794.0	425.2
Liabilities
Derivative contracts	5.2	3.5
Contingent consideration	3.8	28.7
Total Liabilities	9.0	32.2
Quoted Prices in Active Markets (Level I) [Member]
Assets
Cash equivalents	611.1	301.6
Investments in mutual funds, unit trusts and other similar instruments	37.6	36.3
Total Assets	648.7	337.9
Significant Other Observable Inputs (Level 2) [Member]
Assets
Insurance contracts	48.9	42.6
Derivative contracts	92.0	40.1
Total Assets	140.9	82.7
Liabilities
Derivative contracts	5.2	3.5
Total Liabilities	5.2	3.5
Significant Unobservable Inputs (Level 3) [Member]
Assets
Auction rate securities	4.4	4.6
Total Assets	4.4	4.6
Liabilities
Contingent consideration	3.8	28.7
Total Liabilities	$ 3.8	$ 28.7