Business and Basis of Presentation (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012 CountryAndTerritory
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Minimum number of countries and territories where services are available through network of agent locations (in countries and territories)	200
Net Assets Subject to Limitations	$ 285

Total assets that cannot be used for operating purposes because of contract or regulatory requirements that are in effect for a period that extends beyond one year.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_OtherRestrictedAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant