Commitment With Strategic Partner (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
Apr. 30, 2011	Mar. 31, 2011 years	Dec. 31, 2011
Commitment With Strategic Partner [Abstract]
Remote hosting service support agreement term (in years)		10
Annual payment obligation for data center and hosting services		$ 50
Proceeds from sale of hosting equipment and infrastructure	20
Cost of revenue under the ACS agreement			$ 28

The aggregate cost of goods produced and sold and services rendered during the reporting period.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 2

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Name:	us-gaap_CostOfRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration