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Investments | 12 Months Ended
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Dec. 31, 2012
Investments |
4. | INVESTMENTS
Short-term investments As of December 31, 2012, all of the held-to-maturity securities were time deposits in commercial banks with a maturity of less than one year. The available-for-sale securities are debt securities with a maturity of less than one year purchased from commercial banks and other financial institutions. During the years ended December 31, 2010, 2011 and 2012, the Company recorded interest income, including short-term investment gains, of RMB37.21 million, RMB149.35 million and RMB726.40 million (US$116.60 million) in the consolidated statements of comprehensive income, respectively. Long-term investments The Company’s long-term investments consist of cost method investments, equity method investments and held-to-maturity securities with maturities of greater than 12 months. Cost method investments The carrying amount of Company’s cost method investments was RMB389.63 million and RMB269.42 million (US$43.24 million) as of December 31, 2011 and 2012, respectively. The decrease is primarily due to the impairment provision made to certain investments. Equity method investments As of December 31, 2012, the Company, through Baidu Holdings Limited (“Baidu Holdings”), holds 100% of the ordinary shares of Youa.com, Inc. (“Youa”). The Company has three out of the total seven seats on the board of directors of Youa and accounted for the investment in Youa under the equity method due to the lack of control of its board of directors and certain substantive participating rights provided to the convertible redeemable preferred shares holders. As of December 31, 2012, the Company also holds equity investments in the following investees through its subsidiaries or VIEs, all of which were accounted for under the equity method:
Investee |  | Percentage of ownership of common stock |
Beijing Paibo Times Technology Co., Ltd. |  |  | 32.56 | %
Chongqing Rongdu Technology Co., Ltd. |  |  | 40.00 | %
Henan Feidian Network Technology Co., Ltd. |  |  | 40.00 | %
OPDA Appublish Co., Ltd. |  |  | 15.33 | %
The total impairment charges on long-term investments were nil, RMB47.89 million and RMB169.18 million (US$27.16 million) for the years ended December 31, 2010, 2011 and 2012, respectively. Investments classified as held-to-maturity securities and available-for-sale securities as of December 31, 2011 and 2012 were as follows:
|  | As of December 31, 2011 |
|  | Amortized cost |  |  | Gross un- recognized holding gains |  |  | Gross unrecognized holding losses |  |  | Gross unrealized gains |  |  | Fair value |
|  | RMB |  |  | RMB |  |  | RMB |  |  | RMB |  |  | RMB |
|  | (In thousands) |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Held-to-maturity securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed-rate investments |  |  | 9,848,848 |  |  |  | 10,504 |  |  |  | (25,077 | ) |  |  |  |  |  |  | 9,834,275 |
Adjustable-rate investments |  |  | 100,048 |  |  |  | — |  |  |  | (21 | ) |  |  |  |  |  |  | 100,027 |
Available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjustable-rate investments |  |  | 102,637 |  |  |  |  |  |  |  |  |  |  |  | 45 |  |  |  | 102,682 |
|  | As of December 31, 2012 |
|  | Amortized cost |  |  | Gross un- recognized holding gains |  |  | Gross unrecognized holding losses |  |  | Gross unrealized gains |  |  | Fair value |  |  | Fair value |
|  | RMB |  |  | RMB |  |  | RMB |  |  | RMB |  |  | RMB |  |  | US$ |
|  | (In thousands) |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Held-to-maturity securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed-rate investments |  |  | 17,072,751 |  |  |  | 30,886 |  |  |  | (17,385 | ) |  |  |  |  |  |  | 17,086,252 |  |  |  | 2,742,533 |
Available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed-rate investments |  |  | 3,500,945 |  |  |  |  |  |  |  |  |  |  |  | 13,454 |  |  |  | 3,514,399 |  |  |  | 564,100 |
Adjustable-rate investments |  |  | 17,073 |  |  |  |  |  |  |  |  |  |  |  | — |  |  |  | 17,073 |  |  |  | 2,740 |
Long-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed-rate held-to-maturity investments |  |  | 513,728 |  |  |  | 886 |  |  |  | — |  |  |  |  |  |  |  | 514,614 |  |  |  | 82,601 |
Held-to-maturity securities are stated at amortized cost. The long-term held-to-maturity investments will mature between May 2014 and August 2014 in accordance with their contractual terms. The methodology used in the determination of fair values for held-to-maturity securities and available-for-sale securities were summarized in Note 21.

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- Definition This item represents the disclosure related to cost method investments, equity method investments and investments in held-to-maturity securities, trading securities and available-for-sale securities. + References No definition available. + Details
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Namespace Prefix: | bidu_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration