EQUITY (Accumulated balances related to each component of other comprehensive income/(loss)) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Derivatives qualifying as cash flow hedges	$ 85	$ 16
Pension and other postretirement benefits	(2,181)	(1,857)
Available-for-sale securities	31	28
Foreign currency translation	(360)	(328)
Accumulated other comprehensive loss	(2,425)	(2,141)
Other Comprehensive Income (Loss), before Tax [Abstract]
Derivatives qualifying as cash flow hedges - Unrealized gains, Pre-tax	139	58	26
Derivatives qualifying as cash flow hedges - Reclassified to net earnings, Pre-tax	(41)	(56)	(56)
Derivatives qualifying as cash flow hedges, Pre-tax	98	2	(30)
Pension and postretirement benefits - Actuarial gains/(losses), Pre-tax	(1,414)	1,475	(432)
Pension and postretirement benefits - Amortization, Pre-tax	104	129	133
Pension and postretirement benefits - Settlements and curtailments, Pre-tax	867	165	159
Pension and other postretirement benefits, Pre-tax	(443)	1,769	(140)
Available-for-sale securities - Unrealized gains/(losses), Pre-tax	10	(35)	20
Available-for-sale securities - Realized gains, Pre-tax	(1)	(8)	(11)
Available-for-sale securities, Pre-tax	9	(43)	9
Foreign currency translation, Pre-tax	(8)	(75)	(15)
Other Comprehensive Income/(Loss), before Tax	(344)	1,653	(176)
Other Comprehensive Income (Loss), Tax, Parenthetical Disclosures [Abstract]
Derivatives qualifying as cash flow hedges - Unrealized gains, Tax	(45)	(17)	(17)
Derivatives qualifying as cash flow hedges - Reclassified to net earnings, Tax	16	22	20
Derivatives qualifying as cash flow hedges, Tax	(29)	5	3
Pension and other postretirement benefits - Actuarial gains/(losses), Tax	464	(504)	121
Pension and other postretirement benefits - Amortization, Tax	(37)	(43)	(43)
Pension and other postretirement benefits - Settlements and curtailments, Tax	(308)	(56)	(56)
Pension and other postretirement benefits, Tax	119	(603)	22
Available-for-sale securities - Unrealized gains/(losses), Tax	(6)	3	(8)
Available-for-sale securities - Realized gains, Tax		3	2
Available-for-sale securities, Tax	(6)	6	(6)
Foreign currency translation Adjustment, Tax	(24)
Other comprehensive income/(loss), Tax	60us-gaap_OtherComprehensiveIncomeLossTax	(592)us-gaap_OtherComprehensiveIncomeLossTax	19us-gaap_OtherComprehensiveIncomeLossTax
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Derivatives qualifying as cash flow hedges - Unrealized holding gains, After tax	94	41	9
Derivatives qualifying as cash flow hedges - Reclassified to net earnings After tax	(25)	(34)	(36)
Derivatives qualifying as cash flow hedges, After tax	69	7	(27)
Pension and other postretirement benefits - Actuarial gains/(losses), After tax	(950)	971	(311)
Pension and other postretirement benefits - Amortization, After tax	67	86	90
Pension and other postretirement benefits - Settlements and curtailments	559	109	103
Pension and other postretirement benefits, After tax	(324)	1,166	(118)
Available for sale securities - Unrealized gains/(losses), After tax	4	(32)	12
Available for sale securities - Realized gains, After tax	(1)	(5)	(9)
Available-for-sale securities, After tax	3	(37)	3
Foreign currency translation, After tax	(32)	(75)	(15)
Total Other Comprehensive Income/(Loss)	$ (284)	$ 1,061	$ (157)

Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

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Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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The total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.

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Amount of tax expense (benefit) related to (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.

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Amount of tax expense (benefit) related to gain (loss) adjustment to other comprehensive income (loss) resulting from settlement or curtailment of pension and other postretirement defined benefit plans.

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Amount before tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount before tax, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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