PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Increase in fair value of pension assets	$ 57
Percentage increase in fair value of pension assets	1.00%
Increase in projected benefit obligation	$ 25
Percentage increase in projected benefit obligation (less than)	1.00%
Net effect increase in the funded status	$ 32
U.S. Qualified Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to benefit plans during 2015			$ 0
Registered Canadian Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to benefit plans during 2015			38
Non Registered Canadian Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to benefit plans during 2015			3
U.S. Non-Qualified Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to benefit plans during 2015			19
U.S. and Canadian Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Recognized gain for plan amendment	$ 0	$ (45)	0	$ (90)
Expected contribution to benefit plans during 2015			$ 25