Goodwill and Other Intangible Assets (Details) $ in Millions	6 Months Ended
Jun. 30, 2015 USD ($)
Changes in the net carrying amount of goodwill by operating segment (in millions)
Beginning balance	$ 8,860
Goodwill related to current year acquisitions	16
Goodwill related to disposals	(13)
Goodwill related to prior year acquisitions	(1)
Foreign currency translation	(201)
Ending balance	8,661
Risk Solutions [Member]
Changes in the net carrying amount of goodwill by operating segment (in millions)
Beginning balance	5,911
Goodwill related to current year acquisitions	1
Goodwill related to disposals	0
Goodwill related to prior year acquisitions	(1)
Foreign currency translation	(189)
Ending balance	5,722
HR Solutions [Member]
Changes in the net carrying amount of goodwill by operating segment (in millions)
Beginning balance	2,949
Goodwill related to current year acquisitions	15
Goodwill related to disposals	(13)
Goodwill related to prior year acquisitions	0
Foreign currency translation	(12)
Ending balance	$ 2,939

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

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-SubTopic 20

-Section 50

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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.

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

+ References

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