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 |