Accounting Policies Accounting Policies (Revenue from Contract from Customer Impact on Cash Flow) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2018	Dec. 29, 2017		Dec. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Cash Provided by Operating Activities	$ 486.7	$ 429.7	[1]	$ 431.1	[1]
Net Cash Used in Investing Activities, Continuing Operations	(1,649.6)	(371.2)	[1]	(146.9)	[1]
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	$ 989.4	66.5	[1]	(177.3)	[1]
Accounting Standards Update 2016-15 [Member] | Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Cash Provided by Operating Activities		411.9		413.6
Net Cash Used in Investing Activities, Continuing Operations		(366.0)		(144.4)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations		79.1		(162.3)
Accounting Standards Update 2016-15 [Member] | Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Cash Provided by Operating Activities		17.8		17.5
Net Cash Used in Investing Activities, Continuing Operations		(5.2)		(2.5)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations		$ (12.6)		$ (15.0)

[1] See Note 2 for a summary of adjustments