Goodwill (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Changes in goodwill, net of purchase accounting adjustments
Beginning balance	$ 8,500.0us-gaap_Goodwill	$ 8,381.5us-gaap_Goodwill
Goodwill, acquired during period	404.0us-gaap_GoodwillAcquiredDuringPeriod	118.5us-gaap_GoodwillAcquiredDuringPeriod
Purchase price and foreign currency adjustments	(26.4)	0
Ending balance	8,877.6us-gaap_Goodwill	8,500.0us-gaap_Goodwill
IFS [Member]
Changes in goodwill, net of purchase accounting adjustments
Beginning balance	6,711.6	6,596.0
Goodwill, acquired during period	74.2	115.7
Purchase price and foreign currency adjustments	0	(0.1)
Ending balance	6,785.8	6,711.6
GFS [Member]
Changes in goodwill, net of purchase accounting adjustments
Beginning balance	1,788.4	1,785.5
Goodwill, acquired during period	329.8	2.8
Purchase price and foreign currency adjustments	(26.4)	0.1
Ending balance	$ 2,091.8	$ 1,788.4

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

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-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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-Section 50

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-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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