RETIREMENT-RELATED BENEFITS - Net Funded Status (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Net funded status recognized in the Consolidated Statement of Financial Position
Prepaid pension assets	$ 3,034	$ 1,734
Current liabilities - compensation and benefits	(3,577)	(3,560)
Noncurrent liabilities - retirement and nonpension postretirement benefit obligations	(17,070)	(16,504)
U.S. Pension Plans
Net funded status recognized in the Consolidated Statement of Financial Position
Prepaid pension assets	1,002	429
Current liabilities - compensation and benefits	(118)	(116)
Noncurrent liabilities - retirement and nonpension postretirement benefit obligations	(1,698)	(1,718)
Funded Status	(814)	(1,405)
Non-US Pension Plans
Net funded status recognized in the Consolidated Statement of Financial Position
Prepaid pension assets	2,032	1,304
Current liabilities - compensation and benefits	(303)	(297)
Noncurrent liabilities - retirement and nonpension postretirement benefit obligations	(10,689)	(9,976)
Funded Status	(8,960)	(8,969)
U.S. Nonpension Postretirement Benefit Plans
Net funded status recognized in the Consolidated Statement of Financial Position
Prepaid pension assets	0	0
Current liabilities - compensation and benefits	(368)	(320)
Noncurrent liabilities - retirement and nonpension postretirement benefit obligations	(4,076)	(4,262)
Funded Status	(4,444)	(4,582)
Non-U.S. Nonpension Postretirement Benefit Plans
Net funded status recognized in the Consolidated Statement of Financial Position
Prepaid pension assets	0	0
Current liabilities - compensation and benefits	(15)	(11)
Noncurrent liabilities - retirement and nonpension postretirement benefit obligations	(607)	(547)
Funded Status	$ (622)	$ (558)

The aggregate net amount recognized in the balance sheet associated with the defined benefit plan(s). Will normally be the same as the Defined Benefit Plan, Funded Status of Plan, Total.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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- References

No definition available.

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- Definition

Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2417-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.24)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2410-114920

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- Definition

Cumulative employer's contributions in excess of net pension cost recognized, before the adoption of the recognition provisions of FAS 158. Under FAS 158, prepaid pension costs are no longer recognized in the statement of financial position. Note that there is a separate concept for noncurrent assets relating to defined benefit pension and other defined benefit postretirement plans for use under the recognition provisions of FAS 158.

+ References

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