ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		$ 1	$ 0
Adjustments to pension and other postretirement benefit plans (net of tax of $8, $6) (1) (2)		(12)	(11)
Accumulated Other Comprehensive Income (Loss) [Member]
Balance at beginning of year		(1,320)	(1,228)
Balance at end of period		(1,307)	(1,217)
Accumulated Translation Adjustment [Member]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		1	0
Balance at beginning of year		(62)	(61)
Balance at end of period		(61)	(61)
Accumulated Defined Benefit Plans and Other Post Retirement Adjustment [Member]
Balance at beginning of year		(1,258)	(1,167)
Adjustments to pension and other postretirement benefit plans (net of tax of $8, $6) (1) (2)	[1],[2]	12	11
Adjustments to pension and other postretirement benefit plans, tax	[2]	8	6
Balance at end of period		$ (1,246)	$ (1,156)

[1] Included in "Net periodic benefit cost." See Note 7 for additional information.

[2] Tax amounts are included in "Provision for income taxes" in the consolidated statements of income.