SEGMENT INFORMATION (Details 2) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 49,019.9	$ 48,964.5
Operating Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	47,442.1	48,080.1
Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,577.8	884.4
Developed Markets | Operating Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	40,580.6	41,182.7
Emerging Markets | Operating Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 6,861.5	$ 6,897.4