Acquisitions (Narrative) (Detail)	12 Months Ended																			12 Months Ended
	Dec. 31, 2012 USD ($)	Dec. 31, 2012 RUB	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 Customer Relationships [Member] USD ($)	Dec. 31, 2011 Customer Relationships [Member] USD ($)	Dec. 31, 2010 Customer Relationships [Member] USD ($)	Dec. 31, 2012 Trade Names And Trademarks-Indefinite [Member] USD ($)	Dec. 31, 2011 Trade Names And Trademarks-Indefinite [Member] USD ($)	Dec. 31, 2012 Merchant Network [Member] USD ($)	Dec. 31, 2011 Merchant Network [Member] USD ($)	Dec. 31, 2010 Merchant Network [Member] USD ($)	Dec. 31, 2012 Russian Fuel Card Company [Member] USD ($)	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 (£)	Dec. 31, 2011 Allstar Business Solutions Limited [Member] Customer Relationships [Member] USD ($)	Dec. 31, 2011 Allstar Business Solutions Limited [Member] Trade Names And Trademarks-Indefinite [Member] USD ($)	Dec. 31, 2011 Allstar Business Solutions Limited [Member] Merchant Network [Member] USD ($)	Dec. 31, 2011 Mexican Prepaid Fuelcard And Food Voucher Business [Member] Business Shareholder	Dec. 31, 2010 ALL 2010 Acquisitions [Member] USD ($)	Jul. 03, 2012 All 2012 Acquisitions [Member] USD ($)	Dec. 31, 2012 All 2012 Acquisitions [Member] USD ($)
Business Acquisition, Contingent Consideration [Line Items]
Aggregate purchase price	$ 207,400,000		$ 333,800,000	$ 11,200,000											$ 312,000,000	£ 200,000,000						$ 156,000,000
Deferred payment	11,300,000												11,300,000	11,300,000
Contingent earn-out payment	3,900,000	120,600,000
First Payment Related Earn-Out	1,300,000	40,100,000
Purchase price, net of cash and cash equivalents																					1,900,000		1,900,000
Goodwill for tax purposes	238,000,000
Acquisition related costs	2,500,000
Deferred tax liabilities															20,500,000						1,500,000
Intangible assets	109,758,000		168,200,000	13,502,000	77,654,000	141,600,000	11,461,000	16,900,000	18,400,000	4,604,000	8,200,000	2,041,000			168,200,000		141,600,000,000	18,400,000,000	8,200,000,000		13,502,000		109,758,000
Aggregate Carrying amount of customer related intangible assets															86,100,000
Accrued Liabilities acquired															1,300,000
Liabilities acquired															5,500,000
Goodwill															62,800,000
Deferred tax asset															1,700,000
Deferred tax liabilities															$ 19,900,000
Number of businesses served over by acquired entity																				10,000
Number of card holders and beneficiaries hold by businesses																				800,000