Acquisitions (Pro-Forma Information) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Business Combinations [Abstract]
Revenue	$ 3,215	$ 3,302
Income from continuing operations	498	460
Net income attributable to the Company	$ 482	$ 445
Basic net income per share:
Basic net income per share - Continuing operations (in dollars per share)	$ 0.90	$ 0.81
Basic net income per share - Net income attributable to the Company (in dollars per share)	$ 0.89	$ 0.81
Diluted net income per share:
Diluted net income per share - Continuing operations (in dollars per share)	$ 0.89	$ 0.80
Diluted net income per share - Net income attributable to the Company (in dollars per share)	$ 0.88	$ 0.80

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

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