Financial Instruments - Additional Information (Detail) - USD ($) $ in Billions		Mar. 24, 2018	Dec. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Debt Instrument, Fair Value Disclosure		$ 44.0	$ 41.0
Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	[1]	0.9	0.9
Foreign Exchange Contract
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	[1]	1.7	1.6
Interest rate derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	[1]	$ 14.2	$ 14.2
Interest rate derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate		48.00%	43.00%
Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	[1]	$ 1.5	$ 1.5

[1] In billions.