RETIREMENT AND POSTRETIREMENT BENEFIT PLANS (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net periodic benefit costs:
Employer contributions	$ 3,000,000	$ 0		$ 0
Pension Benefit
Net periodic benefit costs:
Service cost	1,000,000	1,000,000	$ 2,000,000	2,000,000
Interest cost	1,000,000	1,000,000	2,000,000	2,000,000
Expected return on plan assets	(1,000,000)	(1,000,000)	(2,000,000)	(3,000,000)
Recognized actuarial loss	1,000,000	1,000,000	1,000,000	1,000,000
Settlements	8,000,000		8,000,000
Net periodic benefit cost	10,000,000	2,000,000	11,000,000	2,000,000
Postretirement Benefit
Net periodic benefit costs:
Service cost	1,000,000	1,000,000	2,000,000	2,000,000
Interest cost	1,000,000	1,000,000	2,000,000	2,000,000
Net periodic benefit cost	$ 2,000,000	$ 2,000,000	$ 4,000,000	$ 4,000,000