Reporting Segment And Geographic Information (Reconciliation Of The Company's Consolidated Segment Operating Income To Consolidated Income Before Income Taxes) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 29, 2017	Dec. 30, 2016	Jan. 01, 2016
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Unallocated Corporate Expenses		$ (1,146.6)	$ (1,057.0)	$ (1,047.8)
Restructuring Charges	[1]	(10.5)	(13.3)	(12.8)
Stock-based Compensation		(64.8)	(52.6)	(50.1)
Amortization of purchased intangible assets		(148.8)	(150.8)	(162.4)
Amortization of acquisition-related inventory set-up		(2.8)	0.0	0.0
Acquisition and divestiture items		(7.4)	(6.8)	(9.9)
Executive Transition Costs		0.0	(1.0)	0.0
Litigation Costs		0.0	0.0	(0.3)
Consolidated Operating income		246.0	181.0	154.4
Non-operating income (expense), net		13.1	(4.3)	(2.6)
Consolidated Income Before Taxes		259.1	176.7	151.8
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated Operating income		567.7	476.0	459.9
Corporate, Non-Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Unallocated Corporate Expenses	[2]	$ (87.4)	$ (70.5)	$ (70.0)

[1] Restructuring charges primarily consist of severance and benefits, resulting from employee headcount reductions in connection with the Company's restructuring programs related to decisions to streamline processes and reduce the cost structure. As of the end of fiscal 2017, the Company's restructuring liability was $1.4 million, which is expected to be settled in fiscal 2018. Restructuring liabilities are reported within Other current liabilities on the Consolidated Balance Sheets.

[2] Unallocated corporate expense includes general corporate expense.