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Segment Information (Segment and Geographic Information) (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Revenue, Major Customer [Line Items] |  |  |  |
Total revenues | $ 6,424.1 | $ 6,615.1 | $ 18,593.0 | $ 19,071.7
Operating Income | 2,137.3 | 2,030.3 | 5,775.5 | 5,265.1
U.S. |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Total revenues | 2,072.5 | 2,189.3 | 6,215.2 | 6,341.6
Operating Income | 977.5 | 902.1 | 2,836.6 | 2,559.7
International Lead Markets |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Total revenues | 1,881.2 | 1,971.6 | 5,452.5 | 5,699.3
Operating Income | 754.1 | 739.5 | 2,127.2 | 2,011.6
High Growth Markets |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Total revenues | 1,651.3 | 1,645.2 | 4,644.1 | 4,714.4
Operating Income | 320.1 | 297.3 | 814.7 | 639.3
Foundational Markets and Corporate |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Total revenues | 819.1 | 809.0 | 2,281.2 | 2,316.4
Operating Income | $ 85.6 | $ 91.4 | $ (3.0) | $ 54.5

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