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Acquisitions and Significant Accounting Policies (Details) | 3 Months Ended | 6 Months Ended |  | 0 Months Ended | 3 Months Ended | 6 Months Ended |  |  | 0 Months Ended |  | 6 Months Ended
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Sep. 30, 2013 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2013 USD ($) | Dec. 31, 2013 USD ($) | Mar. 07, 2014 2014 Acquisitions Watson Petroleum USD ($) | Mar. 07, 2014 2014 Acquisitions Watson Petroleum GBP (£) | Jun. 30, 2013 2014 Acquisitions Watson Petroleum USD ($) | Jun. 30, 2014 2014 Acquisitions Watson Petroleum USD ($) | Jun. 30, 2013 2014 Acquisitions Watson Petroleum USD ($) | Jun. 30, 2014 2014 Acquisitions Watson Petroleum GBP (£) | Mar. 07, 2014 2014 Acquisitions Watson Petroleum Trademark/Trade name rights USD ($) | Mar. 07, 2014 2014 Acquisitions Watson Petroleum Customer relationships USD ($) | Mar. 07, 2014 2014 Acquisitions Watson Petroleum Other identifiable intangible assets USD ($) | Jun. 30, 2014 2014 Acquisitions Watson Petroleum Land segment USD ($) | Jun. 30, 2014 2013 Acquisitions Land segment Adjustment USD ($) | Jun. 30, 2014 2013 Acquisitions Marine segment Adjustment USD ($)
Acquisitions and Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incorrect cash flow presentation related to an acquisition payment | $ 17,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated purchase price of acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated purchase price |  |  |  |  | 167,038,000 |  |  |  |  |  |  |  |  |  |  |
Less: Cash acquired |  |  |  |  | 11,842,000 |  |  |  |  |  |  |  |  |  |  |
Estimated purchase price, net of cash acquired |  | 164,205,000 | 25,415,000 |  | 155,196,000 |  |  |  |  |  |  |  |  |  |  |
Less: Amounts due to sellers |  |  |  |  | 789,000 |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition of businesses |  |  |  |  | 154,407,000 |  |  |  |  |  |  |  |  |  |  |
Assets acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  | 11,842,000 |  |  |  |  |  |  |  |  |  |  |
Accounts receivable |  |  |  |  | 217,727,000 |  |  |  |  |  |  |  |  |  |  |
Inventories |  |  |  |  | 20,534,000 |  |  |  |  |  |  |  |  |  |  |
Property and equipment |  |  |  |  | 60,358,000 |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets |  |  |  |  | 51,119,000 |  |  |  |  |  | 5,900,000 | 43,600,000 | 1,600,000 |  |  |
Goodwill |  | 577,157,000 |  | 483,591,000 | 92,149,000 |  |  |  |  |  |  |  |  | 92,100,000 | 400,000 |
Other current and long-term assets |  |  |  |  | 12,764,000 |  |  |  |  |  |  |  |  |  |  |
Weighted average amortizable lives of identifiable intangible assets |  |  |  |  |  |  |  |  |  |  |  | 4 years 1 month 6 days | 2 years |  |  |
Increase (decrease) in goodwill due to foreign currency translation adjustments |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 700,000 | 400,000
Liabilities assumed: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable |  |  |  |  | (230,386,000) |  |  |  |  |  |  |  |  |  |  |
Accrued expenses and other current liabilities |  |  |  |  | (47,972,000) |  |  |  |  |  |  |  |  |  |  |
Other long-term liabilities |  |  |  |  | (19,142,000) |  |  |  |  |  |  |  |  |  |  |
Initial noncontrolling interest upon acquisition of joint venture |  |  |  |  | (1,955,000) |  |  |  |  |  |  |  |  |  |  |
Estimate purchase price |  |  |  |  | 167,038,000 |  |  |  |  |  |  |  |  |  |  |
Escrow payment related to an assumed obligation of an acquired business |  | 21,724,000 |  |  | 21,700,000 | 13,000,000 |  |  |  |  |  |  |  |  |  |
Escrow account balance |  |  |  |  |  |  |  | 22,200,000 |  | 13,000,000 |  |  |  |  |  |
Pro forma results |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  | 10,985,812,000 | 22,320,916,000 | 21,705,901,000 |  |  |  |  |  |  |
Net income attributable to World Fuel |  |  |  |  |  |  | $ 54,226,000 | $ 100,902,000 | $ 107,853,000 |  |  |  |  |  |  |
Earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic (in dollars per share) |  |  |  |  |  |  | $ 0.76 | $ 1.43 | $ 1.51 |  |  |  |  |  |  |
Diluted (in dollars per share) |  |  |  |  |  |  | $ 0.75 | $ 1.41 | $ 1.50 |  |  |  |  |  |  |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition The amount of inventory recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
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- Definition Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
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- Definition Amount recognized as of the acquisition date for the assets, including goodwill, in excess of (less than) the aggregate liabilities assumed, less the noncontrolling interest in the acquiree. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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