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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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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.

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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.

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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.

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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.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Acquisitions and Significant Accounting Policies (Details) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2015 USD ($) $ / shares	Sep. 30, 2014 USD ($) $ / shares	Sep. 30, 2015 USD ($) $ / shares	Sep. 30, 2014 USD ($) $ / shares	Sep. 01, 2015 USD ($)	Dec. 31, 2014 USD ($)	Jul. 29, 2014 location
Assets acquired:
Goodwill	$ 667.9	$ 667.9		$ 667.9			$ 653.3
2015 Acquisitions
Estimated purchase price of acquisition
Estimated purchase price	80.1
Less: Cash acquired	1.2
Estimated purchase price, net of cash acquired	78.9
Less: Amounts due to sellers	0.9
Cash paid for acquisition of businesses	78.0
Assets acquired:
Cash and cash equivalents	1.2	1.2		1.2
Accounts receivable	5.8	5.8		5.8
Inventories	7.4	7.4		7.4
Property and equipment	39.7	39.7		39.7
Identifiable intangible assets	16.6	16.6		16.6
Goodwill	25.4	25.4		25.4
Other current and long-term assets	5.1	5.1		5.1
Liabilities assumed:
Short-term debt	(0.5)	(0.5)		(0.5)
Accounts payable	(9.9)	(9.9)		(9.9)
Accrued expenses and other current liabilities	(3.9)	(3.9)		(3.9)
Other long-term liabilities	(6.8)	(6.8)		(6.8)
Estimated purchase price	80.1	80.1		80.1
Goodwill anticipated to be deductible for tax purposes						$ 2.7
2015 Acquisitions \| Trademark/Trade name rights
Assets acquired:
Identifiable intangible assets	0.9	0.9		0.9
2015 Acquisitions \| Customer relationships
Assets acquired:
Identifiable intangible assets	$ 11.3	11.3		11.3
Liabilities assumed:
Weighted average amortizable lives of identifiable intangible assets	10 years
2015 Acquisitions \| Other
Assets acquired:
Identifiable intangible assets	$ 4.4	4.4		4.4
Liabilities assumed:
Weighted average amortizable lives of identifiable intangible assets	9 years 4 months 24 days
2014 Acquisitions
Pro forma results
Revenue			$ 11,748.5		$ 34,289.2
Net income attributable to World Fuel			$ 56.4		$ 158.8
Earnings per common share:
Basic (in dollars per share) \| $ / shares			$ 0.80		$ 2.24
Diluted (in dollars per share) \| $ / shares			$ 0.79		$ 2.23
Goodwill
Increase (decrease) in goodwill				3.8
2014 Acquisitions \| Land Segment
Goodwill
Increase (decrease) in goodwill				1.0
Increase (decrease) in goodwill due to foreign currency translation adjustments				3.6
2014 Acquisitions \| Aviation Segment
Goodwill
Increase (decrease) in goodwill due to foreign currency translation adjustments				1.9
2014 Acquisitions \| Marine segment
Goodwill
Increase (decrease) in goodwill due to foreign currency translation adjustments				1.7
Colt
Acquisitions
Number of locations \| location								3,000
2015 & 2014 Acquisitions
Pro forma results
Revenue		7,948.7	$ 11,977.6	24,071.1	$ 34,914.2
Net income attributable to World Fuel		$ 52.0	$ 60.0	$ 139.9	$ 164.7
Earnings per common share:
Basic (in dollars per share) \| $ / shares		$ 0.74	$ 0.85	$ 1.98	$ 2.33
Diluted (in dollars per share) \| $ / shares		$ 0.74	$ 0.84	$ 1.97	$ 2.31