Revenue from Contracts with Customers Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Other revenues (excluded from ASC 606)	$ 170.6	$ 187.7
Revenue, including assessed tax	9,181.3	8,194.3
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	1,192.7	1,152.3
EMEA
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	1,987.2	1,714.6
LATAM
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	829.7	658.0
North America
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	5,001.2	4,481.7
Aviation segment
Disaggregation of Revenue [Line Items]
Revenue, including assessed tax	4,292.9	3,317.4
Aviation segment \| Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	392.0	258.6
Aviation segment \| EMEA
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	670.0	453.3
Aviation segment \| LATAM
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	490.2	330.9
Aviation segment \| North America
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	2,763.0	2,255.9
Marine segment
Disaggregation of Revenue [Line Items]
Revenue, including assessed tax	2,027.7	2,093.5
Marine segment \| Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	799.6	893.4
Marine segment \| EMEA
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	637.4	659.2
Marine segment \| LATAM
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	155.2	156.1
Marine segment \| North America
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	279.9	230.3
Land segment
Disaggregation of Revenue [Line Items]
Revenue, including assessed tax	2,860.7	2,783.4
Land segment \| Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	1.1	0.3
Land segment \| EMEA
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	679.8	602.2
Land segment \| LATAM
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	184.2	171.0
Land segment \| North America
Disaggregation of Revenue [Line Items]
Revenue, excluding assessed tax	$ 1,958.3	$ 1,995.5

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Amount, after sales adjustments, returns, allowances, and discounts, of revenue classified as other.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a),(d))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 32
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 225
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-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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