Segment Information (Segment and Geographic Information) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Total revenues	$ 6,049.7	$ 6,265.0	$ 11,725.6	$ 12,168.9
Operating Income	2,295.1	1,857.9	4,329.1	3,638.2
U.S.
Segment Reporting Information [Line Items]
Total revenues	2,048.4	2,122.8	3,977.4	4,142.7
Operating Income	1,072.9	1,018.9	2,020.8	1,859.1
International Lead Markets
Segment Reporting Information [Line Items]
Total revenues	1,813.2	1,842.8	3,456.7	3,571.3
Operating Income	776.0	718.9	1,442.6	1,373.1
High Growth Markets
Segment Reporting Information [Line Items]
Total revenues	1,679.2	1,550.6	3,216.4	2,992.8
Operating Income	349.5	273.7	650.2	494.6
Foundational Markets and Corporate
Segment Reporting Information [Line Items]
Total revenues	508.9	748.8	1,075.1	1,462.1
Operating Income	$ 96.7	$ (153.6)	$ 215.5	$ (88.6)