Restructuring, Impairment and Other Charges and Credits (Restructuring, Impairment, and Other Charges and Credits) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Severance charges	$ 58	$ 7	$ 135	$ 7
Asset impairment	195		195		$ 369
Capacity realignment	60	61	149	61
Other charges and credits	24	(1)	83	6
Total restructuring, impairment and other charges and credits	337	67	562	74
Gross Margin [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges	24	1	76	1
Capacity realignment	60	61	148	61
Other charges and credits	14	33	35	33
Total restructuring, impairment and other charges and credits	98	95	259	95
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges	18	6	31	6
Other charges and credits	4		39
Total restructuring, impairment and other charges and credits	22	6	70	6
Research, Development And Engineering Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges	16		28
Asset impairment	195		195
Capacity realignment			1
Other charges and credits	1		1
Total restructuring, impairment and other charges and credits	212		225
Other [Member]
Restructuring Cost and Reserve [Line Items]
Other charges and credits	5	(34)	8	(27)
Total restructuring, impairment and other charges and credits	$ 5	$ (34)	$ 8	$ (27)