The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

Acquisition (Narrative) (Detail)	6 Months Ended	12 Months Ended	6 Months Ended
Acquisition (Narrative) (Detail)	Jun. 30, 2012 USD ($)	Dec. 31, 2011 USD ($)	Jun. 30, 2012 Other Acquisition USD ($)	Jun. 30, 2012 Russian Fuel Card Company [Member] USD ($)	Jun. 15, 2012 Russian Fuel Card Company [Member] Subsequent Event [Member] USD ($)	Dec. 31, 2011 Allstar Business Solutions Limited [Member] USD ($)	Dec. 31, 2011 Allstar Business Solutions Limited [Member] GBP (£)
Business Acquisition, Contingent Consideration [Line Items]
Aggregate purchase price	$ 51,600,000	$ 333,800,000				$ 312,000,000	£ 200,000,000
Deferred payment	11,300,000			11.3	11,250,000
Contingent earn-out payment	$ 4.9		$ 4,900,000
Number of foreign acquisitions		2