Commitments and Contingencies Disclosure [Line Items]

No definition available.

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- Definition

Fair value portion of guarantee, including, but not limited to, financial standby letter of credit, fair value guarantee, guarantee of collection of scheduled contractual cash flows from financial assets, and contracts that contingently require the guarantor to make payments or perform services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12201-110248

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717

+ Details

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- Definition

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

+ References

No definition available.

+ Details

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- Details

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Commitment and Contingencies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2017 CNY (¥)	Dec. 31, 2016 CNY (¥)	Dec. 31, 2015 CNY (¥)	Dec. 31, 2017 CNY (¥)
Network Infrastructure and Buildings
Commitments and Contingencies Disclosure [Line Items]
Capital commitments contracted not yet reflected in financial statements	$ 84,000,000				¥ 547,000,000
Office
Commitments and Contingencies Disclosure [Line Items]
Total operating lease expense	78,000,000	¥ 507,000,000	¥ 494,000,000	¥ 647,000,000
IDC Facilities
Commitments and Contingencies Disclosure [Line Items]
Total operating lease expense	854,000,000	¥ 5,600,000,000	4,700,000,000	¥ 3,700,000,000
Obligations related to the entity's directors and officers
Commitments and Contingencies Disclosure [Line Items]
Fair value of indemnification obligations related to the entity's directors and officers	$ 0		¥ 0		¥ 0