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Subsequent Events - Additional Information (Detail) (2014.1.1-2014.3.28) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 USD ($) | Dec. 31, 2013 CNY
Subsequent Event [Line Items] |  |
Business acquisition cash consideration | $ 64.19 | 388.58

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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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Balance Type: | credit
Period Type: | duration

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- Details
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Period Type: | duration