Weighted Average Assumptions to Determine Benefit Obligations (Detail) |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| U.S. [Member] | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Discount rate | 3.94% | 4.10% |
| Non-U.S. [Member] | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Discount rate | 2.53% | 3.46% |
| Rate of compensation increase | 4.47% | 4.65% |