Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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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.

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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.

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Fair value of investments in debt securities classified as held-to-maturity.

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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.

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Fair value portion of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Fair value portion of notes payable.

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The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

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Fair Value Disclosure and Measurement (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2015 CNY (¥)	Dec. 31, 2014 CNY (¥)	Dec. 31, 2013 CNY (¥)	Dec. 31, 2015 CNY (¥)
Fair value disclosure
Long-term notes payable	$ 4,741,515		¥ 21,811,666		¥ 30,714,586
Fair value measurement
Total assets measured at fair value	3,288,673		4,867,748		21,303,367
Long-term investments, losses	(18,060)	¥ (116,980)	(93,420)	¥ (17,520)
Intangible assets, losses		0	(1,630)	(4,620)
Total losses	(18,058)	(116,978)	(95,049)	¥ (24,197)
Short-term Investments \| Fixed-rate Investments
Fair value disclosure
Held-to-maturity investments	5,732,517		38,248,723		37,134,096
Fair value measurement
Available-for-sale investments, current	1,074,192		2,865,096		6,958,399
Short-term Investments \| Adjustable-rate Debt Investments
Fair value disclosure
Held-to-maturity investments			59,519
Fair value measurement
Available-for-sale investments, current	2,057,085		1,568,543		13,325,385
Short-term Investments \| Equity Investments
Fair value measurement
Available-for-sale investments, current	114,640		45,508		742,618
Other Long-term Investments \| Fixed-rate Investments
Fair value disclosure
Held-to-maturity investments	278,867		531,318		1,806,446
Other Long-term Investments \| Equity Investments
Fair value measurement
Available-for-sale investments, noncurrent	42,756		115,921		276,965
Other Long-term Investments \| Debt Investment
Fair value measurement
Available-for-sale investments, noncurrent			272,680
Time Deposits
Fair value disclosure
Cash equivalents	104,665		1,746,888		678,000
Money Market Fund
Fair value disclosure
Cash equivalents	93,914		755,095		608,353
Fair Value, Inputs, Level 1
Fair value disclosure
Long-term notes payable			21,811,666		30,714,586
Fair value measurement
Total assets measured at fair value			161,429		1,019,583
Fair Value, Inputs, Level 1 \| Money Market Fund
Fair value disclosure
Cash equivalents			755,095		608,353
Fair Value, Inputs, Level 2
Fair value measurement
Total assets measured at fair value			4,433,639		20,283,784
Fair Value, Inputs, Level 2 \| Short-term Investments \| Fixed-rate Investments
Fair value disclosure
Held-to-maturity investments			38,248,723		37,134,096
Fair Value, Inputs, Level 2 \| Short-term Investments \| Adjustable-rate Debt Investments
Fair value disclosure
Held-to-maturity investments			59,519
Fair Value, Inputs, Level 2 \| Other Long-term Investments \| Fixed-rate Investments
Fair value disclosure
Held-to-maturity investments			531,318		1,806,446
Fair Value, Inputs, Level 2 \| Time Deposits
Fair value disclosure
Cash equivalents			1,746,888		678,000
Fair Value, Inputs, Level 3
Fair value measurement
Total assets measured at fair value			272,680
Fair Value, Measurements, Nonrecurring
Fair value measurement
Long-term investments	0		0		0
Intangible assets	0		0		0
Long-term investments, losses	(18,058)	(116,978)	(93,424)
Intangible assets, losses			(1,625)
Total losses	(18,058)	¥ (116,978)	(95,049)
Fair Value, Measurements, Nonrecurring \| Fair Value, Inputs, Level 1
Fair value measurement
Long-term investments			0		0
Intangible assets			0		0
Fair Value, Measurements, Nonrecurring \| Fair Value, Inputs, Level 2
Fair value measurement
Long-term investments			0		0
Intangible assets			0		0
Fair Value, Measurements, Nonrecurring \| Fair Value, Inputs, Level 3
Fair value measurement
Long-term investments			0		0
Intangible assets			0		0
Fair Value, Measurements, Recurring \| Short-term Investments \| Fixed-rate Investments
Fair value measurement
Available-for-sale investments, current	1,074,192		2,865,096		6,958,399
Fair Value, Measurements, Recurring \| Short-term Investments \| Adjustable-rate Debt Investments
Fair value measurement
Available-for-sale investments, current	2,057,085		1,568,543		13,325,385
Fair Value, Measurements, Recurring \| Short-term Investments \| Equity Investments
Fair value measurement
Available-for-sale investments, current	114,640		45,508		742,618
Fair Value, Measurements, Recurring \| Other Long-term Investments \| Equity Investments
Fair value measurement
Available-for-sale investments, noncurrent	$ 42,756		115,921		276,965
Fair Value, Measurements, Recurring \| Other Long-term Investments \| Debt Investment
Fair value measurement
Available-for-sale investments, noncurrent			272,680
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1 \| Short-term Investments \| Equity Investments
Fair value measurement
Available-for-sale investments, current			45,508		742,618
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1 \| Other Long-term Investments \| Equity Investments
Fair value measurement
Available-for-sale investments, noncurrent			115,921		276,965
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2 \| Short-term Investments \| Fixed-rate Investments
Fair value measurement
Available-for-sale investments, current			2,865,096		6,958,399
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2 \| Short-term Investments \| Adjustable-rate Debt Investments
Fair value measurement
Available-for-sale investments, current			1,568,543		¥ 13,325,385
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3 \| Other Long-term Investments \| Debt Investment
Fair value measurement
Available-for-sale investments, noncurrent			¥ 272,680