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Income Taxes - Components of Deferred Tax Assets (Liabilities) (Parenthetical) (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013
Income Tax Disclosure [Abstract] |
Number of common shares | 18
Post-split price of common shares | $ 17.86

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- Definition Post-split price of common shares. + References No definition available. + Details
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- Details
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