Annual report pursuant to Section 13 and 15(d)

SHAREOWNERS' EQUITY SHAREOWNERS' EQUITY - Reclassification from AOCI (Details)

v3.6.0.2
SHAREOWNERS' EQUITY SHAREOWNERS' EQUITY - Reclassification from AOCI (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Accumulated Net Unrealized Investment Gain (Loss) [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax $ 0 $ 0 $ 0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax 0 0 (1)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax (236) (165) 60
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax 142 99 (35)
Accumulated Defined Benefit Plans Adjustment [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Reclassification to earnings (net of tax effect of $67, $1,876 and $378) 1,783 195 1,462
Tax | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax (142) (99) 35
Tax | Accumulated Defined Benefit Plans Adjustment [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Tax 1,040 97 870
Net Income [Member] [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Total amount reclassified for the period (1,547) (30) (1,521)
Net Income [Member] [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax 0 0 1
Net Income [Member] [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax 236 165 (60)
Net Income [Member] [Member] | Accumulated Defined Benefit Plans Adjustment [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Reclassification to earnings (net of tax effect of $67, $1,876 and $378) (1,783) (195) (1,462)
Labor and Related Expense [Member] | Accumulated Defined Benefit Plans Adjustment [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax (172) (174) (170)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax 0 0 (356)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax (2,651) (118) (1,806)
Investment Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax 0 0 1
Interest Expense [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax 0 0 0
Interest rate contracts | Interest Expense [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax (26) (24) (23)
Foreign exchange contracts | Interest Expense [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax 0 (25) (48)
Foreign exchange contracts | Revenue [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax $ 404 $ 313 $ (24)