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Restructuring and other impairment charges - expected costs to be incurred (Details) - USD ($) $ in Millions	Dec. 31, 2016	Apr. 30, 2014
2016 Manufacturing footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	$ 34
2016 Manufacturing footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	44
2014 Manufacturing footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	43	$ 37
2014 Manufacturing footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	48	$ 44
Termination benefits | 2016 Manufacturing footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	14
Termination benefits | 2016 Manufacturing footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	15
Termination benefits | 2014 Manufacturing footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	11
Termination benefits | 2014 Manufacturing footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	12
Facility closure and other exit costs | 2016 Manufacturing footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	2
Facility closure and other exit costs | 2016 Manufacturing footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	3
Facility closure and other exit costs | 2014 Manufacturing footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	1
Facility closure and other exit costs | 2014 Manufacturing footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	2
Accelerated Depreciation Charges | 2016 Manufacturing footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	10
Accelerated Depreciation Charges | 2016 Manufacturing footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	13
Accelerated Depreciation Charges | 2014 Manufacturing footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	10
Accelerated Depreciation Charges | 2014 Manufacturing footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	10
Other | 2016 Manufacturing footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	8
Other | 2016 Manufacturing footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	13
Other | 2014 Manufacturing footprint realignment plan | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	21
Other | 2014 Manufacturing footprint realignment plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	$ 24

X

- Definition

Amount expected to be recognized in earnings for the specified restructuring cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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+ References

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