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Fair Value Disclosure and Measurement (Detail) In Thousands, unless otherwise specified | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |
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Dec. 31, 2013 USD ($) | Dec. 31, 2013 CNY | Dec. 31, 2012 CNY | Dec. 31, 2011 CNY | Dec. 31, 2013 Short-term Investments Fixed-rate Investments USD ($) | Dec. 31, 2013 Short-term Investments Fixed-rate Investments CNY | Dec. 31, 2012 Short-term Investments Fixed-rate Investments CNY | Dec. 31, 2013 Short-term Investments Adjustable-rate Debt Investments USD ($) | Dec. 31, 2013 Short-term Investments Adjustable-rate Debt Investments CNY | Dec. 31, 2012 Short-term Investments Adjustable-rate Debt Investments CNY | Dec. 31, 2013 Short-term Investments Equity Investments USD ($) | Dec. 31, 2013 Short-term Investments Equity Investments CNY | Dec. 31, 2012 Other Long-term Investments Fixed-rate Investments CNY | Dec. 31, 2013 Time Deposits USD ($) | Dec. 31, 2013 Time Deposits CNY | Dec. 31, 2012 Time Deposits CNY | Dec. 31, 2013 Money Market Fund USD ($) | Dec. 31, 2013 Money Market Fund CNY | Dec. 31, 2012 Money Market Fund CNY | Dec. 31, 2013 Fair Value, Inputs, Level 1 CNY | Dec. 31, 2012 Fair Value, Inputs, Level 1 CNY | Dec. 31, 2013 Fair Value, Inputs, Level 1 Money Market Fund CNY | Dec. 31, 2012 Fair Value, Inputs, Level 1 Money Market Fund CNY | Dec. 31, 2013 Fair Value, Inputs, Level 2 CNY | Dec. 31, 2012 Fair Value, Inputs, Level 2 CNY | Dec. 31, 2013 Fair Value, Inputs, Level 2 Short-term Investments Fixed-rate Investments CNY | Dec. 31, 2012 Fair Value, Inputs, Level 2 Short-term Investments Fixed-rate Investments CNY | Dec. 31, 2012 Fair Value, Inputs, Level 2 Other Long-term Investments Fixed-rate Investments CNY | Dec. 31, 2013 Fair Value, Inputs, Level 2 Time Deposits CNY | Dec. 31, 2012 Fair Value, Inputs, Level 2 Time Deposits CNY | Dec. 31, 2013 Fair Value, Inputs, Level 3 CNY | Dec. 31, 2012 Fair Value, Inputs, Level 3 CNY | Dec. 31, 2013 Fair Value, Measurements, Nonrecurring USD ($) | Dec. 31, 2013 Fair Value, Measurements, Nonrecurring CNY | Dec. 31, 2012 Fair Value, Measurements, Nonrecurring CNY | Dec. 31, 2013 Fair Value, Measurements, Nonrecurring Fair Value, Inputs, Level 3 CNY | Dec. 31, 2012 Fair Value, Measurements, Nonrecurring Fair Value, Inputs, Level 3 CNY | Dec. 31, 2013 Fair Value, Measurements, Recurring Short-term Investments Fixed-rate Investments USD ($) | Dec. 31, 2013 Fair Value, Measurements, Recurring Short-term Investments Fixed-rate Investments CNY | Dec. 31, 2012 Fair Value, Measurements, Recurring Short-term Investments Fixed-rate Investments CNY | Dec. 31, 2013 Fair Value, Measurements, Recurring Short-term Investments Adjustable-rate Debt Investments USD ($) | Dec. 31, 2013 Fair Value, Measurements, Recurring Short-term Investments Adjustable-rate Debt Investments CNY | Dec. 31, 2012 Fair Value, Measurements, Recurring Short-term Investments Adjustable-rate Debt Investments CNY | Dec. 31, 2013 Fair Value, Measurements, Recurring Short-term Investments Equity Investments USD ($) | Dec. 31, 2013 Fair Value, Measurements, Recurring Short-term Investments Equity Investments CNY | Dec. 31, 2013 Fair Value, Measurements, Recurring Fair Value, Inputs, Level 1 Short-term Investments Equity Investments CNY | Dec. 31, 2013 Fair Value, Measurements, Recurring Fair Value, Inputs, Level 2 Short-term Investments Fixed-rate Investments CNY | Dec. 31, 2012 Fair Value, Measurements, Recurring Fair Value, Inputs, Level 2 Short-term Investments Fixed-rate Investments CNY | Dec. 31, 2013 Fair Value, Measurements, Recurring Fair Value, Inputs, Level 2 Short-term Investments Adjustable-rate Debt Investments CNY | Dec. 31, 2012 Fair Value, Measurements, Recurring Fair Value, Inputs, Level 2 Short-term Investments Adjustable-rate Debt Investments CNY
Fair value disclosure |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 488,284 | 2,955,924 | 3,034,443 | $ 113,857 | 689,254 | 4,854,278 |  |  | 689,254 | 4,854,278 |  |  |  |  |  | 2,955,924 | 3,034,443 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Held-to-maturity investments |  |  |  |  | 3,199,707 | 19,370,067 | 17,086,252 |  |  |  |  |  | 514,614 |  |  |  |  |  |  |  |  |  |  |  |  | 19,370,067 | 17,086,252 | 514,614 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term notes payable | 2,444,445 | 14,797,937 | 9,420,285 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,797,937 | 9,420,285 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value measurement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale investments |  |  |  |  | 1,260,049 | 7,627,958 | 3,514,399 | 84,978 | 514,433 | 17,073 | 207,001 | 1,253,120 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,260,049 | 7,627,958 | 3,514,399 | 84,978 | 514,433 | 17,073 | 207,001 | 1,253,120 | 1,253,120 | 7,627,958 | 3,514,399 | 514,433 | 17,073
Long-term investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets measured at fair value | 1,552,028 | 9,395,511 | 3,531,472 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,253,120 | 0 |  |  | 8,142,391 | 3,531,472 |  |  |  |  |  | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term investments, losses | (2,890) | (17,520) | (169,180) | (47,890) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (2,894) | (17,521) | (169,180) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets, losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (340) | (2,057) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets, losses | (760) | (4,620) | 0 | (8,040) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (763) | (4,619) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total losses | $ (3,997) | (24,197) | (169,180) | (47,886) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (3,997) | (24,197) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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- Definition Fair value of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 + Details
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 + Details
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- Definition Fair value portion of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph a, f, g -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560 + Details
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- Definition Fair value portion of notes payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 + Details
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