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Share-based Compensation And Incentive Plans (Summary Of Share-Based Compensation) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Breakdown of share based compensation expense [Line Items]
Share-based compensation	$ 18	$ 22	$ 16
Total income tax benefit recognized in net income for share-based compensation arrangements	7	8	6
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost	2	$ 2	$ 1
Cost of Sales [Member]
Breakdown of share based compensation expense [Line Items]
Share-based compensation	9
Selling, General and Administrative Expenses [Member]
Breakdown of share based compensation expense [Line Items]
Share-based compensation	$ 9

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- Definition

[Line Items] for Breakdown of share based compensation expense [Table]

+ References

No definition available.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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- Definition

An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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