EMPLOYEE BENEFITS (FV, Assets Measured on Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, at the beginning of the period	$ 74	$ 65
Realized gains (losses)	0	2
Net unrealized gains related to assets still held at the end of the year	10	3
Purchases	5	7
Settlements, net	(4)	(3)
Fair Value, at the end of the period	85	74
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	28	25
Realized gains (losses)	2	2
Net unrealized gains related to assets still held at the end of the year	5	1
Purchases	0	0
Settlements, net	0	0
Fair Value, at the end of the period	35	28
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	46	40
Realized gains (losses)	(2)	0
Net unrealized gains related to assets still held at the end of the year	5	2
Purchases	5	7
Settlements, net	(4)	(3)
Fair Value, at the end of the period	$ 50	$ 46