EMPLOYEE BENEFITS (FV, Assets Measured on Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, at the beginning of the period	$ 85	$ 74
Realized gains (losses)	2	0
Net unrealized gains (losses) related to assets still held at the end of the year	(1)	10
Purchases	4	5
Settlements, net	(4)	(4)
Fair Value, at the end of the period	86	85
Real estate property [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, at the beginning of the period	35	28
Realized gains (losses)	2	2
Net unrealized gains (losses) related to assets still held at the end of the year	4	5
Purchases	0	0
Settlements, net	0	0
Fair Value, at the end of the period	41	35
Private equity investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, at the beginning of the period	50	46
Realized gains (losses)	0	(2)
Net unrealized gains (losses) related to assets still held at the end of the year	(5)	5
Purchases	4	5
Settlements, net	(4)	(4)
Fair Value, at the end of the period	$ 45	$ 50