LEASED PROPERTY (Leased Property) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Leases [Abstract]
Operating Leases, Rent Expense, Net	$ 29	$ 27	$ 31
Operating Leases, Future Minimum Payments Due [Abstract]
Future minimum operating lease commitments due during 2016	6
Future minimum operating lease commitments due during 2017	5
Future minimum operating lease commitments due during 2018	5
Future minimum operating lease commitments due during 2019	4
Future minimum operating lease commitments due during 2020	3
Future minimum operating lease commitments due during 2021 and thereafter	10
Total future minimum operating lease commitments	$ 33