Shareholders' Equity Reclassification Components (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income [Line Items]
Other (income) expense - net									$ (37)	$ (147)	$ (350)
Cost of products sold									57,322	58,727	63,736
Interest expense									330	293	308
Revenues	$ (16,070)	$ (14,827)	$ (14,943)	$ (14,988)	$ (16,501)	$ (15,832)	$ (15,629)	$ (14,384)	(60,828)	(62,346)	(67,702)
Restructuring, Settlement and Impairment Provisions									173	55	200
Loss (Earnings) before Income Taxes									(1,609)	(1,822)	(2,284)
Income Tax Expense (Benefit)									7	534	438
Net Loss (Earnings) Including Noncontrolling Interests									(1,602)	(1,288)	(1,846)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income [Line Items]
Other (income) expense - net									0	(75)	23
Income Tax Expense (Benefit)									0	0	0
Net Loss (Earnings) Including Noncontrolling Interests									0	(75)	23
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income [Line Items]
Other (income) expense - net									(1)	0	0
Restructuring, Settlement and Impairment Provisions									0	6	0
Income Tax Expense (Benefit)									0	0	0
Net Loss (Earnings) Including Noncontrolling Interests									(1)	6	0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax									(57)	(17)	37
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (loss), before Tax									112	44	30
Loss (Earnings) before Income Taxes									55	27	67
Income Tax Expense (Benefit)									(29)	(5)	(44)
Net Loss (Earnings) Including Noncontrolling Interests									26	22	23
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income [Line Items]
Other (income) expense - net									2	18	(29)
Cost of products sold									45	82	25
Interest expense									(1)	2	(1)
Revenues									1	35	(41)
Loss (Earnings) before Income Taxes									47	137	(46)
Income Tax Expense (Benefit)									(18)	(52)	17
Net Loss (Earnings) Including Noncontrolling Interests									$ 29	$ 85	$ (29)