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Related Party Transactions - Summary of Related Party Payables Outstanding (Detail)
In Thousands, unless otherwise specified
Dec. 31, 2013
USD ($)
Dec. 31, 2013
CNY
Dec. 31, 2012
CNY
Dec. 31, 2013
Telstra International Limited [Member]
USD ($)
Dec. 31, 2013
Telstra International Limited [Member]
CNY
Dec. 31, 2012
Telstra International Limited [Member]
CNY
Dec. 31, 2013
Beijing Australian Telecommunications Technical Consulting Limited [Member]
USD ($)
Dec. 31, 2013
Beijing Australian Telecommunications Technical Consulting Limited [Member]
CNY
Dec. 31, 2012
Beijing Australian Telecommunications Technical Consulting Limited [Member]
CNY
Related Party Transaction [Line Items]                  
Related party payables outstanding $ 94 567    $ 69 418    $ 25 149