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RESERVE ROLLFORWARDS (Tables)

12 Months Ended

Dec. 31, 2015

Valuation and Qualifying Accounts [Abstract]

Schedule of Valuation and Qualifying Accounts

Valuation and Qualifying Accounts



					Additions
	Balance at January 1, 2015				Charges (Credits) to Cost and Expense				Other Accounts				Deductions				Balance at December 31, 2015
Reserve for:
Doubtful accounts and returns	$	10			$	1			$	2			$	—			$	13
LIFO inventory	462				(166		)		—				—				296
Non-environmental asset retirement obligations	44				4				—				2				46
Environmental contingencies	345				9				11				29				336
Deferred tax valuation allowance	264				2				38				50				254
	$	1,125			$	(150	)		$	51			$	81			$	945



					Additions
	Balance at January 1, 2014				Charges (Credits) to Cost and Expense				Other Accounts				Deductions				Balance at December 31, 2014
Reserve for:
Doubtful accounts and returns	$	12			$	1			$	—			$	3			$	10
LIFO inventory	506				(44		)		—				—				462
Non-environmental asset retirement obligations	—				—				44				—				44
Environmental contingencies	368				2				2				27				345
Deferred tax valuation allowance	204				(6		)		66				—				264
	$	1,090			$	(47	)		$	112			$	30			$	1,125



(Dollars in millions)					Additions
	Balance at January 1, 2013				Charges (Credits) to Cost and Expense				Other Accounts				Deductions				Balance at December 31, 2013
Reserve for:
Doubtful accounts and returns	$	8			$	5			$	—			$	1			$	12
LIFO inventory	505				1				—				—				506
Environmental contingencies	394				4				1				31				368
Deferred tax valuation allowance	215				—				—				11				204
	$	1,122			$	10			$	1			$	43			$	1,090