OTHER LIABILITIES, INCLUDING EMPLOYEE BENEFITS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Employee Benefits [Line Items]
Defined Benefit Plan, Vesting Period	5 years
Pension, postretirement, postemployment and other employment benefits	$ 1,225	[1]	$ 1,340	[1]
Commodity derivative contracts	320		20
Reserve for uncertain tax benefits	87		107
Other	263		197
Total other liabilities	1,690		1,644
Number of years Mercer Pension Discount Curve consists of spot interest rates at half-year increments	30 years
Years of service required for annuity to equal percentage of executive's highest average compensation for any consecutive three-year period during the preceeding five years before retirement	25 years
Estimated future average expected rate of return per annum on pension assets	7.50%
Estimated future average expected rate of return on passively managed pension assets	7.00%
Estimated future average expected premium on actively managed pension assets	0.50%
Accumulated benefit obligations in excess of plan assets [Abstract]
Projected benefit obligation	2,180		2,247
Accumulated benefit obligation	1,933		2,031
Fair value of plan assets	1,490		1,443
Balance of unfunded defined contribution plan	65		59
Costs charged to operations for employee savings plans and defined contribution plans	66		43		35
Costs capitalized to oil and gas properties for employee savings plans and defined benefit contribution plans	5
Other Liabilities [Member]
Employee Benefits [Line Items]
Commodity derivative contracts	$ 115		$ 0

[1] Refer to Note 7 for current portion.