The term of each of the entity's Exclusive technical consulting and service agreements.

No definition available.

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- Definition

The automatic extension period for the entity's agreements at their expiration.

+ References

No definition available.

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- Definition

Number Of Installment

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No definition available.

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 505

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-Publisher FASB

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-Topic 505

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-Section S99

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-Subparagraph (SX 210.3-04)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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- Definition

The cash inflow associated with the amount received from entity's first offering of stock to the public.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

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- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

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-Publisher FASB

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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- Definition

Number of shares that have been repurchased and retired during the period.

+ References

+ Details

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- Definition

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

+ References

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

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- Definition

The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (bb)

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Organization,Basis of Presentation And Use of Estimates - Additional Information (Detail)	0 Months Ended	12 Months Ended				9 Months Ended						0 Months Ended		0 Months Ended			0 Months Ended
	Nov. 04, 2013 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2013 CNY	Dec. 11, 2013	Dec. 31, 2012	Sep. 30, 2014 Exclusive technical consulting and service agreements [Member]	Sep. 30, 2014 Consolidated VIEs [Member] USD ($)	Sep. 30, 2014 Consolidated VIEs [Member] CNY	Dec. 31, 2013 Consolidated VIEs [Member] USD ($)	Dec. 31, 2013 Consolidated VIEs [Member] CNY	Dec. 31, 2012 Consolidated VIEs [Member] CNY	Dec. 11, 2013 American Depositary Shares [Member] IPO [Member] USD ($)	Dec. 11, 2013 Class A Ordinary Shares [Member]	Dec. 11, 2013 Class A Ordinary Shares [Member] IPO [Member]	Dec. 11, 2013 Class B Ordinary Shares [Member]	Dec. 11, 2013 Class B Ordinary Shares [Member] IPO [Member]	Nov. 04, 2013 Telstra Holdings Pty Ltd. [Member] USD ($)	Dec. 31, 2013 Telstra Holdings Pty Ltd. [Member]	Jun. 27, 2008 Telstra Holdings Pty Ltd. [Member]	Jun. 23, 2008 Telstra Holdings Pty Ltd. [Member]	Jun. 27, 2008 Selling Shareholders of Cheerbright, China Topside and Norstar [Member]	Nov. 04, 2013 West Crest Limited [Member] Installment
Summary of Investment Holdings [Line Items]
Percentage of the Company owned by Telstra																		65.40%	55.00%	100.00%
Percentage of the Company owned by selling shareholders																					45.00%
Ordinary shares purchased																	2,828,147
Ordinary shares purchased, value																	$ 55,000,000
Ordinary shares repurchased and retired	3,856,564
Ordinary shares repurchased and retired, value	75,000,000		457,350,000
Number of installments to be paid in cash																						2
Newly issued shares offered through IPO												8,993,000		8,993,000
Proceeds from issuance of IPO		142,590,000	863,200,000									142,590,000
Ordinary shares outstanding				105,136,436	100,000,000								36,347,496	36,347,496	68,788,940	68,788,940
Inter-company balances between VIE and WFOE and Autohome HK							$ 11,114,000	68,218,000	$ 3,357,000	20,323,000	163,904,000
Term of agreement						30 years
Extension option in agreement term						10 years