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Components of Income Tax (Detail) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 USD ($) | Dec. 31, 2013 CNY | Dec. 31, 2012 CNY | Dec. 31, 2011 CNY
Income Tax Disclosure [Abstract] |  |  |  |
Current income tax | $ 331,530 | 2,006,980 | 1,888,378 | 1,337,469
Income tax refund due to reduced tax rate | (84,029) | (508,686) | (255,189) | (83,907)
Adjustments of deferred tax assets due to reduced tax rates | 3,564 | 21,573 | 0 | 18,216
Deferred income tax (benefit) expense | 51,053 | 309,063 | (59,030) | (82,917)
Taxation for the year | $ 302,118 | 1,828,930 | 1,574,159 | 1,188,861

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