Goodwill and Intangible Assets (Schedule Of Intangible Assets) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 28, 2019	Jun. 28, 2019	Dec. 28, 2018
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	$ 10,687.5	$ 10,687.5	$ 10,697.4
Accumulated amortization	3,521.2	3,521.2	3,082.9
Non-Amortizable intangible assets, gross	554.8	554.8	668.3
Trademarks
Schedule of Intangible Asset by Major Class [Line Items]
Non-Amortizable intangible assets, gross	35.0	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	519.8	633.3
Completed Technology
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	10,456.9	10,456.9	10,467.9
Accumulated amortization	3,413.3	3,413.3	2,980.6
Customer Relationships
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	28.5	28.5	27.5
Accumulated amortization	15.8	15.8	14.1
Trademarks
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	82.0	82.0	81.9
Accumulated amortization	20.0	20.0	18.1
Licensing Agreements [Member]
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	120.1	120.1	120.1
Accumulated amortization	72.1	72.1	$ 70.1
Amortization of Intangible Assets [Member] | Ofirmev
Schedule of Intangible Asset by Major Class [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results	$ 29.8	$ 65.7