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Investments (Detail) ¥ in Thousands, $ in Thousands | Dec. 31, 2015 USD ($) | Dec. 31, 2015 CNY (¥) | Dec. 31, 2014 CNY (¥)
--- | --- | --- | ---
Other Long-term Investments | Equity Investments |  |  |
Amortized cost, Gain (loss) and Fair value on Investments [Line Items] |  |  |
Available-for-sale investments, cost or amortized cost |  | ¥ 322,269 | ¥ 124,000
Available-for-sale investments, gross unrealized gains (losses) |  | (45,304) | (8,079)
Available-for-sale investments noncurrent, fair value | $ 42,756 | 276,965 | 115,921
Other Long-term Investments | Fixed-rate Investments |  |  |
Amortized cost, Gain (loss) and Fair value on Investments [Line Items] |  |  |
Long-term held-to-maturities investments, cost or amortized cost |  | 1,838,953 | 545,930
Held-to-maturity investments, gross unrecognized holding losses |  | (32,507) | (14,612)
Held-to-maturity investments, fair value | 278,867 | 1,806,446 | 531,318
Other Long-term Investments | Debt Investment |  |  |
Amortized cost, Gain (loss) and Fair value on Investments [Line Items] |  |  |
Available-for-sale investments, cost or amortized cost |  |  | 272,680
Available-for-sale investments noncurrent, fair value |  |  | 272,680
Short-term Investments | Equity Investments |  |  |
Amortized cost, Gain (loss) and Fair value on Investments [Line Items] |  |  |
Available-for-sale investments, cost or amortized cost |  | 600,543 | 42,137
Available-for-sale investments, gross unrealized gains (losses) |  | 142,075 | 3,371
Available-for-sale investments current, fair value | 114,640 | 742,618 | 45,508
Short-term Investments | Fixed-rate Investments |  |  |
Amortized cost, Gain (loss) and Fair value on Investments [Line Items] |  |  |
Short-term held-to-maturity investments, cost or amortized cost |  | 36,942,840 | 38,159,394
Held-to-maturity investments, gross unrecognized holding gains |  | 197,848 | 104,718
Held-to-maturity investments, gross unrecognized holding losses |  | (6,592) | (15,389)
Held-to-maturity investments, fair value | 5,732,517 | 37,134,096 | 38,248,723
Available-for-sale investments, cost or amortized cost |  | 6,872,077 | 2,854,682
Available-for-sale investments, gross unrealized gains (losses) |  | 86,322 | 10,414
Available-for-sale investments current, fair value | 1,074,192 | 6,958,399 | 2,865,096
Short-term Investments | Adjustable-rate Debt Investments |  |  |
Amortized cost, Gain (loss) and Fair value on Investments [Line Items] |  |  |
Short-term held-to-maturity investments, cost or amortized cost |  |  | 60,290
Held-to-maturity investments, gross unrecognized holding losses |  |  | (771)
Held-to-maturity investments, fair value |  |  | 59,519
Available-for-sale investments, cost or amortized cost |  | 13,137,500 | 1,568,812
Available-for-sale investments, gross unrealized gains (losses) |  | 187,885 | (269)
Available-for-sale investments current, fair value | $ 2,057,085 | ¥ 13,325,385 | ¥ 1,568,543

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- Definition Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income. + 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 -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26626-111562 + Details
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