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v3.8.0.1

Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions | Total | Common Stock | Capital in Excess of Par Value | Retained Earnings | Accumulated Other Comprehensive Loss | Total World Fuel Shareholders' Equity | Noncontrolling Interest Equity
--- | --- | --- | --- | --- | --- | --- | ---
Balance as of beginning of period at Dec. 31, 2016 | $ 1,940.0 | $ 0.7 | $ 399.9 | $ 1,679.3 | $ (154.8) | $ 1,925.0 | $ 15.0
Balance (in shares) at Dec. 31, 2016 |  | 69.9 |  |  |  |  |
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |  |
Net income | 31.1 |  |  | 31.3 |  | 31.3 | (0.3)
Cash dividends declared | (4.1) |  |  | (4.1) |  | (4.1) |
Distribution of noncontrolling interest | (0.1) |  |  |  |  |  | (0.1)
Amortization of share-based payment awards | 4.2 |  | 4.2 |  |  | 4.2 |
Purchases of common stock tendered by employees to satisfy the required withholding taxes related to share-based payment awards | (1.2) |  | (1.2) |  |  | (1.2) |
Purchases of common stock | (11.1) |  | (11.1) |  |  | (11.1) |
Purchases of common stock (in shares) |  | (0.3) |  |  |  |  |
Other comprehensive income (loss) | 16.9 |  |  |  | 16.7 | 16.7 | 0.2
Balance as of end of period at Mar. 31, 2017 | 1,975.6 | $ 0.7 | 391.8 | 1,706.5 | (138.1) | 1,960.8 | 14.8
Balance (in shares) at Mar. 31, 2017 |  | 69.6 |  |  |  |  |
Balance as of beginning of period at Dec. 31, 2017 | $ 1,738.0 | $ 0.7 | 354.9 | 1,492.8 | (126.5) | 1,721.9 | 16.0
Balance (in shares) at Dec. 31, 2017 | 67.7 | 67.7 |  |  |  |  |
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |  |
Net income | $ 31.3 |  |  | 31.2 |  | 31.2 | 0.1
Cash dividends declared | (4.0) |  |  | (4.0) |  | (4.0) |
Amortization of share-based payment awards | 4.2 |  | 4.2 |  |  | 4.2 |
Issuance (cancellation) of common stock related to share-based payment awards | (0.3) |  | (0.3) |  |  | (0.3) |
Purchases of common stock tendered by employees to satisfy the required withholding taxes related to share-based payment awards | (0.3) |  | (0.3) |  |  | (0.3) |
Other comprehensive income (loss) | 0.5 |  |  |  | 0.8 | 0.8 | (0.3)
Reclassification of certain tax effects from U.S. Tax Reform | 1.6 |  |  | 1.6 |  | 1.6 |
Balance as of end of period at Mar. 31, 2018 | $ 1,771.0 | $ 0.7 | $ 358.6 | $ 1,521.6 | $ (125.7) | $ 1,755.1 | $ 15.9
Balance (in shares) at Mar. 31, 2018 | 67.7 | 67.7 |  |  |  |  |

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- Definition Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=79507207&loc=d3e4534-113899 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=96864182&loc=d3e11149-113907 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=96864182&loc=d3e11178-113907 + Details
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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