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Nature of Business, Acquisitions, Significant Accounting Policies and Recent Accounting Pronouncements (Details) (USD $) | 12 Months Ended |  |  |  |  |  |  |  |  |  | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended
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Dec. 31, 2013 item | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Land segment | Dec. 31, 2012 Land segment | Dec. 31, 2011 Land segment | Dec. 31, 2013 Aviation segment | Dec. 31, 2012 Aviation segment | Dec. 31, 2011 Aviation segment | Dec. 31, 2013 Marine segment | Dec. 31, 2012 Marine segment | Dec. 31, 2011 Marine segment | Dec. 31, 2013 2013 Acquisitions Trademark/Trade name rights | Dec. 31, 2013 2013 Acquisitions Customer relationships | Dec. 31, 2013 2013 Acquisitions Land segment item | Dec. 31, 2013 2012 Acquisitions | Dec. 31, 2012 2012 Acquisitions | Dec. 31, 2012 2012 Acquisitions Multi Service Corporation item | Sep. 01, 2012 2012 Acquisitions Carter Energy Corporation item | Dec. 31, 2012 2012 Acquisitions Immaterial Business Acquisitions item | Dec. 31, 2012 2012 Acquisitions Immaterial Business Acquisitions Aviation segment item | Dec. 31, 2012 2011 Acquisitions | Dec. 31, 2011 2011 Acquisitions | Apr. 02, 2011 2011 Acquisitions Ascent Aviation Group, Inc item | Dec. 31, 2011 2011 Acquisitions Immaterial Business Acquisitions Land segment item | Dec. 31, 2011 2011 Acquisitions Immaterial Business Acquisitions Aviation segment item | Dec. 31, 2011 2011 Acquisitions Immaterial Business Acquisitions Marine segment item
Nature of Business, Acquisitions, Significant Accounting Policies and Recent Accounting Pronouncements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of reportable operating business segments | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of businesses acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  | 3 | 2 |  |  |  | 2 | 3 | 1
Minimum number of truck stops for global fuel procurement and commercial payment programs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,500 |  |  |  |  |  |  |  |  |
Minimum number of retail operators, to whom, acquired company distributes gasoline and diesel fuel |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 700 |  |  |  |  | 450 |  |  |
Estimated aggregate purchase price of acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 43,792,000 |  | $ 226,449,000 |  |  |  |  |  | $ 161,736,000 |  |  |  |
Less: Cash acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,335,000 |  | 12,793,000 |  |  |  |  |  | 2,638,000 |  |  |  |
Purchase price, net of cash acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40,457,000 |  | 213,656,000 |  |  |  |  |  | 159,098,000 |  |  |  |
Less: Promissory notes issued | 3,000,000 | 7,200,000 | 9,000,000 |  |  |  |  |  |  |  |  |  |  |  | 3,000,000 |  | 7,214,000 |  |  |  |  |  | 9,028,000 |  |  |  |
Less: Common stock issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 27,491,000 |  |  |  |
Less: Amounts due to sellers |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 124,000 |  | 75,000 |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition of businesses | 76,954,000 | 217,782,000 | 122,702,000 |  |  |  |  |  |  |  |  |  |  |  | 37,333,000 |  | 206,367,000 |  |  |  |  |  | 122,579,000 |  |  |  |
Cash paid on purchase price adjustments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,500,000 |  |  |  |  |  | 700,000 |  |  |  |  |
Assets acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,335,000 |  | 12,793,000 |  |  |  |  |  | 2,638,000 |  |  |  |
Accounts receivable |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 31,287,000 |  | 134,966,000 |  |  |  |  |  | 61,741,000 |  |  |  |
Inventories |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,839,000 |  | 7,311,000 |  |  |  |  |  | 40,246,000 |  |  |  |
Property and equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,917,000 |  | 10,323,000 |  |  |  |  |  | 23,838,000 |  |  |  |
Identifiable intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,068,000 |  | 87,150,000 |  |  |  |  |  | 23,414,000 |  |  |  |
Goodwill | 483,591,000 | 470,506,000 | 346,246,000 | 298,996,000 | 291,243,000 | 173,215,000 | 115,507,000 | 109,332,000 | 102,509,000 | 69,088,000 | 69,931,000 | 70,522,000 |  |  | 16,077,000 |  | 121,188,000 |  |  |  |  |  | 46,282,000 |  |  |  |
Other current and long-term assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,717,000 |  | 4,851,000 |  |  |  |  |  | 15,717,000 |  |  |  |
Liabilities assumed: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (29,631,000) |  | (130,297,000) |  |  |  |  |  | (38,617,000) |  |  |  |
Accrued expenses and other current liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (3,582,000) |  | (18,321,000) |  |  |  |  |  | (8,453,000) |  |  |  |
Other long-term liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (3,235,000) |  | (3,515,000) |  |  |  |  |  | (5,070,000) |  |  |  |
Estimate purchase price |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 43,792,000 |  | 226,449,000 |  |  |  |  |  | 161,736,000 |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill anticipated to be deductible for tax purposes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,100,000 |  |  |  |  |  |  |  |  |  |  |  |
Acquired identifiable finite-lived intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average amortizable lives of identifiable intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 years 1 month 6 days |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired identifiable indefinite-lived intangible assets |  |  |  |  |  |  |  |  |  |  |  |  | 800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other investments | 83,800,000 | 41,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of Liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derecognized vendor liability accruals amount | 8,500,000 | 11,200,000 | 8,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net foreign currency transaction losses | 2,800,000 |  | 2,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net foreign currency transaction gain |  | 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net foreign currency translation adjustment losses | 13,189,000 | 9,606,000 | 11,277,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative foreign currency translation adjustment losses | $ (29,300,000) | $ (16,100,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e681-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32022-110900 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 + Details
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