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Post-Employment and Other Long-Term Employees Benefits - Pension Plan Asset Allocation (Detail) | Dec. 31, 2015 | Dec. 31, 2014
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Allocation of pension plan assets | 100.00% | 100.00%
Cash [Member] |  |
Allocation of pension plan assets | 3.00% | 3.00%
Equity Securities [Member] |  |
Allocation of pension plan assets | 27.00% | 28.00%
Bonds Securities Remunerating Interest [Member] |  |
Allocation of pension plan assets | 28.00% | 28.00%
Real Estate [Member] |  |
Allocation of pension plan assets | 2.00% | 2.00%
Investment Funds [Member] |  |
Allocation of pension plan assets | 19.00% | 17.00%
Other [Member] |  |
Allocation of pension plan assets | 21.00% | 22.00%

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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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