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Financial Instruments - Derivative Instruments Designated as Fair Value Hedges Included in Consolidated Statements of Earnings (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Interest Rate Swaps [Member] | Interest Expense [Member] | Fair Value Hedging [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Effective Portion of Gain Recognized in Income $ 2.8 $ 2.9 $ 3.7