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Schedule of Weighted Average Pension Assets Allocations by Category (Detail) | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
United States Pension Plans, Defined Benefit |  |
Defined Benefit Plan Disclosure |  |
Total | 100.00% | 100.00%
United States Pension Plans, Defined Benefit | Fixed income securities |  |
Defined Benefit Plan Disclosure |  |
Total | 88.60% | 83.30%
United States Pension Plans, Defined Benefit | Equity securities |  |
Defined Benefit Plan Disclosure |  |
Total | 9.80% | 15.40%
United States Pension Plans, Defined Benefit | Other than Securities Investment |  |
Defined Benefit Plan Disclosure |  |
Total | 1.60% | 1.30%
Foreign Pension Plans, Defined Benefit |  |
Defined Benefit Plan Disclosure |  |
Total | 100.00% | 100.00%
Foreign Pension Plans, Defined Benefit | Fixed income securities |  |
Defined Benefit Plan Disclosure |  |
Total |  | 77.30%
Foreign Pension Plans, Defined Benefit | Equity securities |  |
Defined Benefit Plan Disclosure |  |
Total |  | 19.00%
Foreign Pension Plans, Defined Benefit | Other than Securities Investment |  |
Defined Benefit Plan Disclosure |  |
Total | 100.00% | 3.70%

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