BUSINESS SEGMENT INFORMATION (Geographic Information) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues	$ 4,287	$ 4,069	$ 4,163	$ 4,041	$ 4,258	$ 3,921	$ 3,889	$ 3,811	$ 16,560	$ 15,879	$ 16,385
Property, Plant and Equipment	4,412				4,417				4,412	4,417
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues									8,188	7,716	8,318
Property, Plant and Equipment	3,681				3,686				3,681	3,686
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues									3,491	3,592	3,930
Property, Plant and Equipment	616				597				616	597
Rest Of World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues									4,142	3,459	3,295
Property, Plant and Equipment	$ 115				$ 134				115	134
Other Region [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues									$ 739	$ 1,112	$ 842