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Fair Value Disclosure and Measurement (Detail) ¥ in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 USD ($) | Dec. 31, 2017 CNY (¥) | Dec. 31, 2016 CNY (¥) | Dec. 31, 2015 CNY (¥) | Dec. 31, 2017 CNY (¥)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |
Long-term investments | $ (92) | ¥ (597) | ¥ (245) | ¥ (117) |
Fair value disclosure |  |  |  |  |
Intangible assets | (81) | (529) | (213) | 0 |
Total losses | (362) | (2,358) | (421) | ¥ (117) |
Long-term notes payable | 5,524 |  | 33,253 |  | ¥ 35,943
Fair value measurements |  |  |  |  |
Other invested securities | 2,820 |  | 7,748 |  | 18,350
Derivative Instruments | 26 |  |  |  | 168
Total assets measured at fair value | 9,578 |  | 37,639 |  | 62,327
Short-term Investments | Fixed-rate Investments |  |  |  |  |
Fair value disclosure |  |  |  |  |
Fixed-rate held-to-maturity investments | 7,484 |  | 41,868 |  | 48,695
Fair value measurements |  |  |  |  |
Available-for-sale investments, current | 4,614 |  | 14,378 |  | 30,022
Short-term Investments | Adjustable-rate Debt Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Available-for-sale investments, current | 1,643 |  | 14,987 |  | 10,693
Short-term Investments | Equity Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Available-for-sale investments, current |  |  | 29 |  |
Other Long-term Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Investment accounted for at fair value | 49 |  |  |  | 321
Other Long-term Investments | Equity Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Available-for-sale investments, noncurrent | 426 |  | 497 |  | 2,773
Time Deposits |  |  |  |  |
Fair value disclosure |  |  |  |  |
Cash equivalents | 20 |  | 1,674 |  | 130
Money Market Fund |  |  |  |  |
Fair value disclosure |  |  |  |  |
Cash equivalents | 366 |  | 4,419 |  | 2,384
Fair Value, Inputs, Level 3 |  |  |  |  |
Fair value measurements |  |  |  |  |
Total assets measured at fair value |  |  | 3 |  | 800
Fair Value, Inputs, Level 1 |  |  |  |  |
Fair value measurements |  |  |  |  |
Total assets measured at fair value |  |  | 526 |  | 2,773
Fair Value, Inputs, Level 1 | Money Market Fund |  |  |  |  |
Fair value disclosure |  |  |  |  |
Cash equivalents |  |  | 4,419 |  | 2,384
Fair Value, Inputs, Level 2 |  |  |  |  |
Fair value disclosure |  |  |  |  |
Long-term notes payable |  |  | 33,253 |  | 35,943
Fair value measurements |  |  |  |  |
Derivative Instruments |  |  |  |  | 168
Total assets measured at fair value |  |  | 37,113 |  | 59,233
Fair Value, Inputs, Level 2 | Short-term Investments | Fixed-rate Investments |  |  |  |  |
Fair value disclosure |  |  |  |  |
Fixed-rate held-to-maturity investments |  |  | 41,868 |  | 48,695
Fair Value, Inputs, Level 2 | Time Deposits |  |  |  |  |
Fair value disclosure |  |  |  |  |
Cash equivalents |  |  | 1,674 |  | 130
Fair Value, Measurements, Nonrecurring |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |
Long-term investments | (88) | (575) | (151) |  |
Fair value disclosure |  |  |  |  |
Intangible assets | (21) | (139) | (1) |  |
Fixed assets | (11) | (70) |  |  |
Other non-current assets | (6) | (37) |  |  |
Total losses | (126) | ¥ (821) | (152) |  |
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3 |  |  |  |  |
Fair value measurements |  |  |  |  |
Long-term investments |  |  | 3 |  | 203
Intangible assets |  |  | 0 |  | 272
Fixed assets |  |  |  |  | 0
Other non-current assets |  |  |  |  | 4
Fair Value, Measurements, Recurring |  |  |  |  |
Fair value measurements |  |  |  |  |
Other invested securities | 2,820 |  | 7,748 |  | 18,350
Fair Value, Measurements, Recurring | Short-term Investments | Fixed-rate Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Available-for-sale investments, current | 4,614 |  | 14,378 |  | 30,022
Fair Value, Measurements, Recurring | Short-term Investments | Adjustable-rate Debt Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Available-for-sale investments, current | 1,643 |  | 14,987 |  | 10,693
Fair Value, Measurements, Recurring | Short-term Investments | Equity Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Available-for-sale investments, current |  |  | 29 |  |
Fair Value, Measurements, Recurring | Other Long-term Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Investment accounted for at fair value | 49 |  |  |  | 321
Fair Value, Measurements, Recurring | Other Long-term Investments | Equity Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Available-for-sale investments, noncurrent | $ 426 |  | 497 |  | 2,773
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Other Long-term Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Investment accounted for at fair value |  |  |  |  | 321
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Short-term Investments | Equity Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Available-for-sale investments, current |  |  | 29 |  |
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Other Long-term Investments | Equity Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Available-for-sale investments, noncurrent |  |  | 497 |  | 2,773
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 |  |  |  |  |
Fair value measurements |  |  |  |  |
Other invested securities |  |  | 7,748 |  | 18,350
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Short-term Investments | Fixed-rate Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Available-for-sale investments, current |  |  | 14,378 |  | 30,022
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Short-term Investments | Adjustable-rate Debt Investments |  |  |  |  |
Fair value measurements |  |  |  |  |
Available-for-sale investments, current |  |  | ¥ 14,987 |  | ¥ 10,693

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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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=66048111&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=75030427&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=82896770&loc=d3e26626-111562 + Details
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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 -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82896770&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 No definition available. + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611 + 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=82897076&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=82897076&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=82897076&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=66006027&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=66048111&loc=d3e19190-110258 + Details
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- Definition Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=63488139&loc=d3e12121-115841 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12.Column C.3,4) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611133-123010 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14.Column E.2,3) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C.Column C.7) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 5 -Subparagraph (SX 210.12-13.Column C.6) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611282-123010 + Details
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- Definition The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2921-110230 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -URI http://asc.fasb.org/extlink&oid=82897076&loc=SL6284393-111563 + 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=66048111&loc=d3e19190-110258 + Details
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- Definition The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2921-110230 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 + Details
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