Segment Information (Segment and Geographic Information) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenue, Major Customer [Line Items]
Total revenues	$ 5,958.9	$ 6,700.3
Operating Income	1,385.5	1,936.0
U.S.
Revenue, Major Customer [Line Items]
Total revenues	1,978.1	2,054.1
Operating Income	731.8	820.8
Europe
Revenue, Major Customer [Line Items]
Total revenues	2,164.2	2,712.2
Operating Income	600.9	752.5
APMEA
Revenue, Major Customer [Line Items]
Total revenues	1,524.7	1,618.8
Operating Income	68.5	345.1
Other Countries & Corporate
Revenue, Major Customer [Line Items]
Total revenues	291.9	315.2
Operating Income	$ (15.7)	$ 17.6