Financial Instruments and Fair Value Measurements (Schedule of Fair Value of Assets and Liabilities Measured on a Recurring Basis) (Details) - Recurring - USD ($) $ in Millions	Jun. 30, 2017	Dec. 30, 2016
Assets:
Rabbi Trust Investments, Fair Value Disclosure	$ 32.6	$ 33.6
Equity Securities, Fair Value Disclosure	31.9
Foreign exchange forward and option contracts	0.6	0.7
Total assets at fair value	65.1	34.3
Liabilities:
Deferred Compensation Liability, Fair Value	35.1	32.5
Contingent consideration and acquired contingent liabilities	228.4	250.5
Foreign exchange forward and option contracts	0.3	3.4
Total liabilities at fair value	263.8	286.4
Level 1
Assets:
Rabbi Trust Investments, Fair Value Disclosure	21.5	22.8
Equity Securities, Fair Value Disclosure	31.9
Foreign exchange forward and option contracts	0.6	0.7
Total assets at fair value	54.0	23.5
Liabilities:
Deferred Compensation Liability, Fair Value	0.0	0.0
Contingent consideration and acquired contingent liabilities	0.0	0.0
Foreign exchange forward and option contracts	0.3	3.4
Total liabilities at fair value	0.3	3.4
Level 2
Assets:
Rabbi Trust Investments, Fair Value Disclosure	11.1	10.8
Equity Securities, Fair Value Disclosure	0.0
Foreign exchange forward and option contracts	0.0	0.0
Total assets at fair value	11.1	10.8
Liabilities:
Deferred Compensation Liability, Fair Value	35.1	32.5
Contingent consideration and acquired contingent liabilities	0.0	0.0
Foreign exchange forward and option contracts	0.0	0.0
Total liabilities at fair value	35.1	32.5
Level 3
Assets:
Rabbi Trust Investments, Fair Value Disclosure	0.0	0.0
Equity Securities, Fair Value Disclosure	0.0
Foreign exchange forward and option contracts	0.0	0.0
Total assets at fair value	0.0	0.0
Liabilities:
Deferred Compensation Liability, Fair Value	0.0	0.0
Contingent consideration and acquired contingent liabilities	228.4	250.5
Foreign exchange forward and option contracts	0.0	0.0
Total liabilities at fair value	$ 228.4	$ 250.5