ACCOUNTS RECEIVABLE AND OTHER (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
ACCOUNTS RECEIVABLE AND OTHER
Trade accounts receivable, net of allowance of nil	$ 31	$ 30
Accounts receivable from affiliates		1
Other	4	4
Accounts receivable and other	35	35
Trade accounts receivable, allowance	$ 0	$ 0