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Segment Information (Segment and Geographic Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Total revenues	$ 5,138.9	$ 5,675.9
Operating Income	2,143.1	2,034.0
United States
Segment Reporting Information [Line Items]
Total revenues	1,867.2	1,929.0
Operating Income	998.0	947.9
International Lead Markets
Segment Reporting Information [Line Items]
Total revenues	1,877.5	1,643.5
Operating Income	809.7	666.6
High Growth Markets
Segment Reporting Information [Line Items]
Total revenues	972.2	1,537.2
Operating Income	234.3	300.7
Foundational Markets and Corporate
Segment Reporting Information [Line Items]
Total revenues	422.0	566.2
Operating Income	$ 101.1	$ 118.8

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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).

+ 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)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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