Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Billions	Jun. 25, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated fair values of debt instruments	$ 16.7	$ 16.2
Outstanding principal amount of debt instruments	15.3	15.3
Unamortized discounts and issuance costs	1.0	1.0
Interest rate swaps | Designated as hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate notional amount of derivatives	1.2	1.2
Foreign currency contracts | Designated as hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate notional amount of derivatives	$ 4.6	$ 4.0