Financial Instruments and Fair Value Measurements (Schedule of Fair Value of Assets and Liabilities Measured on a Recurring Basis) (Details) - Recurring - USD ($) $ in Millions	Sep. 29, 2017	Dec. 30, 2016
Assets:
Rabbi Trust Investments, Fair Value Disclosure	$ 34.1	$ 33.6
Equity Securities, Fair Value Disclosure	21.6
Foreign exchange forward and option contracts	0.6	0.7
Total assets at fair value	56.3	34.3
Liabilities:
Deferred Compensation Liability, Fair Value	38.9	32.5
Contingent consideration and acquired contingent liabilities	268.6	250.5
Foreign exchange forward and option contracts	1.2	3.4
Total liabilities at fair value	308.7	286.4
Level 1
Assets:
Rabbi Trust Investments, Fair Value Disclosure	23.2	22.8
Equity Securities, Fair Value Disclosure	21.6
Foreign exchange forward and option contracts	0.6	0.7
Total assets at fair value	45.4	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	1.2	3.4
Total liabilities at fair value	1.2	3.4
Level 2
Assets:
Rabbi Trust Investments, Fair Value Disclosure	10.9	10.8
Equity Securities, Fair Value Disclosure	0.0
Foreign exchange forward and option contracts	0.0	0.0
Total assets at fair value	10.9	10.8
Liabilities:
Deferred Compensation Liability, Fair Value	38.9	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	38.9	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	268.6	250.5
Foreign exchange forward and option contracts	0.0	0.0
Total liabilities at fair value	$ 268.6	$ 250.5