EXIT COSTS AND RESTRUCTURING RESERVES - Reserve Rollforward (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring Reserve [Roll Forward]
Beginning balance	$ 26us-gaap_RestructuringReserve	$ 30us-gaap_RestructuringReserve	$ 68us-gaap_RestructuringReserve
Additions	124us-gaap_RestructuringCharges	31us-gaap_RestructuringCharges	7us-gaap_RestructuringCharges
Reversals	(10)	(5)	(12)
Utilization	(96)us-gaap_PaymentsForRestructuring	(30)us-gaap_PaymentsForRestructuring	(33)us-gaap_PaymentsForRestructuring
Ending balance	44us-gaap_RestructuringReserve	26us-gaap_RestructuringReserve	30us-gaap_RestructuringReserve
Employee Severance \| Salaries & Employee Benefits
Restructuring Reserve [Roll Forward]
Beginning balance	2	3	9
Additions	43	6	2
Reversals	(1)	(1)	(1)
Utilization	(21)	(6)	(7)
Ending balance	23	2	3
Facility Closing \| Occupancy & Equipment
Restructuring Reserve [Roll Forward]
Beginning balance	24	27	59
Additions	24	22	1
Reversals	(5)	(4)	(11)
Utilization	(25)	(21)	(22)
Ending balance	18	24	27
Other Restructuring \| Other
Restructuring Reserve [Roll Forward]
Beginning balance	0	0	0
Additions	57	3	4
Reversals	(4)	0	0
Utilization	(50)	(3)	(4)
Ending balance	$ 3	$ 0	$ 0

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher SEC

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-Number Topic 5

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

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- Definition

Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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