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Income Taxes - Additional Information (Detail) (USD $) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 BusinessTaxProvision | Sep. 30, 2013 | Dec. 31, 2012 | Dec. 31, 2013
Income Tax Contingency [Line Items] |  |  |  |  |  |
Effective tax rate | 60.30% | 41.30% | 76.00% | 63.70% |  |
U.S federal statutory rate | 35.00% | 35.00% | 35.00% | 35.00% |  |
Discrete income tax charge |  |  | $ 56,000,000 |  |  |
Operational losses in certain foreign jurisdictions | 8,000,000 | 6,000,000 | 44,000,000 |  |  |
Income tax benefit recognized | 199,000,000 | 31,000,000 | 200,000,000 | 116,000,000 |  |
Discrete income tax benefit | 9,000,000 |  |  |  |  |
Nondeductible charges |  |  |  | 103,000,000 |  |
Number of specific temporary business tax provisions expired during the period |  |  | 2 |  |  |
Tax provision due to two specific temporary business tax provision that expired in 2011 |  |  |  |  | 19,000,000 |
Foreign tax credits carry forward period |  |  | 10 years |  |  |
Noncontrolling interest | 2,739,000,000 |  | 2,739,000,000 |  |  | 2,929,000,000
Maximum [Member] |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Percentage of tax rate decreased |  |  | 34.00% |  |  |
Minimum [Member] |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Percentage of tax rate decreased |  |  | 15.00% |  |  |
Brazil [Member] |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Discrete income tax charge | 56,000,000 |  |  |  |  |
Italy [Member] |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Income tax benefit recognized | 0 |  |  | 0 |  |
Foreign Jurisdictions [Member] |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Income tax benefit recognized | 0 | 0 | 0 |  |  |
Spain and Australia Authority [Member] |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Discrete income tax charge |  |  |  | 10,000,000 |  |
U.S. [Member] |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Discrete income tax benefit |  |  |  | 19,000,000 |  |
Foreign Tax Authority [Member] |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Decrease to the net deferred tax asset and noncash charge to earnings |  |  | 56,000,000 |  |  |
Noncontrolling interest | $ 34,000,000 |  | $ 34,000,000 |  |  |

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