Background and Basis of Presentation Expected Impact of Adopting ASU 2017-07 on Statements of Income (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2017	Oct. 02, 2016	Sep. 30, 2017	Oct. 02, 2016	Dec. 31, 2016
Cost of products sold	$ 4,000	$ 4,049	$ 12,059	$ 12,503
Selling, general and administrative expenses	653	805	2,163	2,565
Operating income	1,661	1,413	5,133	4,562
New accounting pronouncement, not yet adopted, effect \| Pro forma
Cost of products sold	109	81	455	259	$ 373
Selling, general and administrative expenses	14	14	63	66	93
Operating income	$ (123)	$ (95)	$ (518)	$ (325)	$ (466)

Total costs related to goods produced and sold during the reporting period.

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The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

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- Definition

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311

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