SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
SUPPLEMENTAL CASH FLOW INFORMATION
Interest paid	$ 312	$ 246	$ 219
Capitalized interest	64	138	180
Continuing operations
SUPPLEMENTAL CASH FLOW INFORMATION
Foreign, state and federal income taxes paid for continuing operations	300	1,000	2,900
Production, property and other taxes paid	$ 343	$ 445	$ 610