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Cost Reduction Programs and Other Charges - Schedule of Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	$ 506	$ 567	$ 309
Severance costs
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	298	204
Other cost reduction charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	93	100
Merger related and other charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	115	263
Operating Segments | Americas
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	72	90
Operating Segments | Americas | Merger related and other charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	13	34
Operating Segments | EMEA
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	155	142
Operating Segments | EMEA | Merger related and other charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	3	21
Operating Segments | APAC
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	12	122
Operating Segments | APAC | Merger related and other charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	3	72
Operating Segments | Engineering
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	70	4
Operating Segments | Engineering | Merger related and other charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	4	(9)
Operating Segments | Other
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	197	209
Operating Segments | Other | Merger related and other charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	92	145
Cost Reduction Program
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	391	304
Cost Reduction Program | Severance costs
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	298	204
Cost Reduction Program | Other cost reduction charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	93	100
Cost Reduction Program | Operating Segments | Americas
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	59	56
Cost Reduction Program | Operating Segments | Americas | Severance costs
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	35	36
Cost Reduction Program | Operating Segments | Americas | Other cost reduction charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	24	20
Cost Reduction Program | Operating Segments | EMEA
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	152	121
Cost Reduction Program | Operating Segments | EMEA | Severance costs
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	131	105
Cost Reduction Program | Operating Segments | EMEA | Other cost reduction charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	21	16
Cost Reduction Program | Operating Segments | APAC
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	9	50
Cost Reduction Program | Operating Segments | APAC | Severance costs
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	7	40
Cost Reduction Program | Operating Segments | APAC | Other cost reduction charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	2	10
Cost Reduction Program | Operating Segments | Engineering
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	66	13
Cost Reduction Program | Operating Segments | Engineering | Severance costs
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	38	1
Cost Reduction Program | Operating Segments | Engineering | Other cost reduction charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	28	12
Cost Reduction Program | Operating Segments | Other
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	105	64
Cost Reduction Program | Operating Segments | Other | Severance costs
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	87	22
Cost Reduction Program | Operating Segments | Other | Other cost reduction charges
Restructuring Cost and Reserve [Line Items]
Cost reduction programs and other charges	$ 18	$ 42

X

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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