XML 153 R51.htm IDEA: XBRL DOCUMENT v2.4.0.6

Estimated Useful lives Of Fixed Assets (Detail)	12 Months Ended
	Dec. 31, 2011 Year
Office building
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, minimum (in years)	45
Office building related facility, machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, minimum (in years)	15
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, minimum (in years)	3
Property, plant and equipment, useful life, maximum (in years)	5
Internal use software development costs
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, minimum (in years)	3
Office equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, minimum (in years)	3
Property, plant and equipment, useful life, maximum (in years)	5
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, minimum (in years)	5
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	Over the shorter of lease terms or estimated useful lives of the assets

X

- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-URI http://asc.fasb.org/subtopic&trid=2155824

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The maximum useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLifeMaximum
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The minimum useful life of long lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLifeMinimum
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration