Shareholders' Equity Reclassification Components (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income [Line Items]
Other (income) expense - net									$ 101	$ (10)	$ (149)
Cost of products sold									60,160	57,310	58,728
Interest expense									364	330	293
Revenues	$ (15,947)	$ (15,800)	$ (17,068)	$ (15,526)	$ (16,070)	$ (14,827)	$ (14,943)	$ (14,988)	(64,341)	(60,828)	(62,346)
Restructuring, Settlement and Impairment Provisions									171	173	55
Loss (Earnings) before Income Taxes									(2,060)	(1,609)	(1,822)
Income Tax Expense (Benefit)									245	7	534
Net Loss (Earnings) Including Noncontrolling Interests									(1,815)	(1,602)	(1,288)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income [Line Items]
Other (income) expense - net									(1)	0	(75)
Income Tax Expense (Benefit)									0	0	0
Net Loss (Earnings) Including Noncontrolling Interests									(1)	0	(75)
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									(2)	(1)	0
Restructuring, Settlement and Impairment Provisions									0	0	6
Income Tax Expense (Benefit)									0	0	0
Net Loss (Earnings) Including Noncontrolling Interests									(2)	(1)	6
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income [Line Items]
Loss (Earnings) before Income Taxes									32	55	27
Income Tax Expense (Benefit)									(8)	(29)	(5)
Net Loss (Earnings) Including Noncontrolling Interests									24	26	22
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									(36)	2	18
Cost of products sold									113	45	82
Interest expense									(1)	(1)	2
Revenues									0	1	35
Loss (Earnings) before Income Taxes									76	47	137
Income Tax Expense (Benefit)									(18)	(18)	(52)
Net Loss (Earnings) Including Noncontrolling Interests									58	29	85
Nonoperating Income (Expense) [Member] | 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									(33)	(57)	(17)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (loss), before Tax									$ 65	$ 112	$ 44