Fair Value Adjustments Relating to Swaps (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015	Jan. 02, 2016
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Document Period End Date			Jul. 02, 2016
Proceeds from Derivative Instrument, Financing Activities	$ 27.0		$ 27.0
Fair Value Hedging [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount of Interest Rate Derivatives	0.0		0.0		$ 950.0
Proceeds from Derivative Instrument, Financing Activities	27.0
Interest Expense, Debt	8.1	$ 11.8	19.9	$ 23.7
Fair Value Hedging [Member] | Interest Expense [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain/(Loss) on Swaps	(28.6)	(18.6)	(3.3)	(1.4)
Interest Expense, Debt	29.0	18.3	3.8	1.5
Foreign Exchange Contract [Member] | Net Investment Hedging [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount of Interest Rate Derivatives	1,400.0		1,400.0
Foreign Exchange Contract [Member] | Net Investment Hedging [Member] | Other Income And Expense [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	35.2	(39.4)	37.8	(2.5)
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	$ 0.0	$ 0.0	$ 0.0	$ 0.0
Notes 5 Point 20 Percent Due 2040 [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Stated interest rate	5.20%		5.20%