Goodwill and Intangible Assets (Schedule Of Intangible Assets) (Details) - USD ($) $ in Millions	Sep. 27, 2019	Dec. 28, 2018
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	$ 10,654.7	$ 10,697.4
Accumulated amortization	3,713.4	3,082.9
Non-Amortizable intangible assets, gross	554.8	668.3
Trademarks
Schedule of Intangible Asset by Major Class [Line Items]
Non-Amortizable intangible assets, gross	35.0	35.0
In-process Research and Development
Schedule of Intangible Asset by Major Class [Line Items]
Non-Amortizable intangible assets, gross	519.8	633.3
Completed Technology
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	10,456.9	10,467.9
Accumulated amortization	3,621.0	2,980.6
Customer Relationships
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	0.0	27.5
Accumulated amortization	0.0	14.1
Trademarks
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	77.7	81.9
Accumulated amortization	19.3	18.1
Licensing Agreements [Member]
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	120.1	120.1
Accumulated amortization	$ 73.1	$ 70.1