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Financial Instruments - Fair Values of Derivative Instruments Included within Accompanying Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Dec. 29, 2018	Dec. 30, 2017
Derivatives, Fair Value [Line Items]
Asset Derivatives Fair Value	$ 21.7	$ 30.6
Liability Derivatives Fair Value	3.2	6.5
Derivatives designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Asset Derivatives Fair Value	4.6	8.7
Derivatives designated as hedging instruments: | Other assets | Treasury locks
Derivatives, Fair Value [Line Items]
Asset Derivatives Fair Value	0.0	1.4
Derivatives designated as hedging instruments: | Interest rate swaps | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives Fair Value	4.6	7.3
Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Asset Derivatives Fair Value	17.1	21.9
Liability Derivatives Fair Value	3.2	6.5
Derivatives not designated as hedging instruments: | Foreign currency forwards | Prepaid expenses and other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives Fair Value	2.8	4.1
Derivatives not designated as hedging instruments: | Foreign currency forwards | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives Fair Value	3.2	6.5
Derivatives not designated as hedging instruments: | Equity forwards | Prepaid expenses and other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives Fair Value	$ 14.3	$ 17.8

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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- Definition

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+ References

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