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Revenue from Contracts with Customers Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Other revenues (excluded from ASC 606)	$ 109.4	$ 57.3	$ 314.2	$ 359.8
Revenue	9,322.7	10,429.5	27,460.9	29,761.7
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	1,077.8	1,358.9	3,220.4	3,720.0
EMEA
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	2,391.8	2,641.9	6,721.1	7,059.8
LATAM
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	869.2	760.8	2,652.8	2,352.1
North America
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	4,874.5	5,610.7	14,552.4	16,270.1
Aviation
Disaggregation of Revenue [Line Items]
Revenue	4,743.0	5,025.3	13,780.8	14,218.9
Aviation | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	327.0	379.8	1,032.2	1,135.5
Aviation | EMEA
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	1,155.3	1,122.1	2,883.2	2,754.9
Aviation | LATAM
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	579.4	468.0	1,739.7	1,435.5
Aviation | North America
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	2,689.7	3,098.7	8,166.3	9,019.3
Land
Disaggregation of Revenue [Line Items]
Revenue	2,555.8	2,854.4	7,712.4	8,675.3
Land | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	3.8	0.7	12.7	2.6
Land | EMEA
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	580.9	605.1	1,791.1	1,920.6
Land | LATAM
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	153.3	136.1	441.8	476.7
Land | North America
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	1,787.3	2,078.4	5,306.3	6,179.3
Marine
Disaggregation of Revenue [Line Items]
Revenue	2,023.9	2,549.8	5,967.7	6,867.5
Marine | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	747.0	978.3	2,175.4	2,581.9
Marine | EMEA
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	655.7	914.7	2,046.7	2,384.3
Marine | LATAM
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	136.5	156.6	471.3	439.9
Marine | North America
Disaggregation of Revenue [Line Items]
Revenue, ASC 606	$ 397.4	$ 433.6	$ 1,079.8	$ 1,071.5

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Other Revenue

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 280
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