Shareholders' Equity Reclassification Components (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income [Line Items]
Cost of products sold									$ 59,902	$ 60,509	$ 60,160
Interest expense									339	402	364
Revenues	$ (17,978)	$ (15,126)	$ (16,281)	$ (14,970)	$ (16,329)	$ (16,726)	$ (16,297)	$ (15,304)	(64,355)	(64,656)	(64,341)
Restructuring, Settlement and Impairment Provisions									80	303	171
Loss (Earnings) before Income Taxes									(1,883)	(1,588)	(2,060)
Income Tax Expense (Benefit)									101	209	245
Net Loss (Earnings) Including Noncontrolling Interests									(1,782)	(1,379)	(1,815)
Other Nonoperating Income (Expense)									278	(7)	(101)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)									0	0	0
Net Loss (Earnings) Including Noncontrolling Interests									0	7	(1)
Other Nonoperating Income (Expense)									0	(7)	1
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)									0	0	0
Net Loss (Earnings) Including Noncontrolling Interests									0	(1)	(2)
Other Nonoperating Income (Expense)									0	1	2
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									7	(9)	32
Income Tax Expense (Benefit)									(11)	18	(8)
Net Loss (Earnings) Including Noncontrolling Interests									(4)	9	24
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]
Cost of products sold									(27)	11	113
Interest expense									2	(1)	(1)
Revenues									68	44	0
Loss (Earnings) before Income Taxes									45	100	76
Income Tax Expense (Benefit)									7	(13)	(18)
Net Loss (Earnings) Including Noncontrolling Interests									52	87	58
Other Nonoperating Income (Expense)									(2)	(46)	36
Nonoperating Income (Expense) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent
Accumulated Other Comprehensive Income [Line Items]
Other Nonoperating Income (Expense)									32	26	33
Nonoperating Income (Expense) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent
Accumulated Other Comprehensive Income [Line Items]
Other Nonoperating Income (Expense)									$ 39	$ 17	$ 65