Business Segment and Geographic Information (Narrative) (Details) $ in Millions	9 Months Ended	12 Months Ended
Sep. 30, 2016 USD ($) Division Countries Customers	Dec. 31, 2015 USD ($) Countries Customers	Jun. 30, 2016 USD ($)
Concentration Risk [Line Items]
Number of business segments \| Division	2
Maximum Percentage Gross Trade Receivables From One Geographic Segment	10.00%	10.00%
Maximum Percentage Gross Trade Receivables From One Customer	10.00%	10.00%
Number of Countries Exceed Receivables Threshold \| Countries	3	0
Number of Customers Exceed Receivables Threshold \| Customers	0	0
Venezuela trade receivables exchanged for promissory note			$ 200
VENEZUELA
Concentration Risk [Line Items]
Accounts Receivable, Gross	$ 564	$ 704
Accounts Receivable, Gross, Noncurrent	$ 138	$ 175
Accounts Receivable [Member] \| VENEZUELA
Concentration Risk [Line Items]
Concentration Risk, Percentage	13.00%	14.00%
Geographic Concentration Risk [Member] \| UNITED STATES \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	23.00%	26.00%
Geographic Concentration Risk [Member] \| SAUDI ARABIA \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	11.00%

The maximum percentage of gross trade receivables from one customer at balance sheet date.

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- Definition

The maximum percentage of gross trade receivables from one geographic segment at balance sheet date.

+ References

No definition available.

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- Definition

The number of business segments into which the company's operations are divided.

+ References

No definition available.

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- Definition

Number Of Countries Exceed Receivables Threshold of 10%

+ References

No definition available.

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- Definition

Number Of Customers Exceed Receivables Threshold of 10%

+ References

No definition available.

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- Definition

Outstanding Venezuela trade receivables exchanged for interest-bearing promissory note

+ References

No definition available.

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- Definition

For unclassified balance sheet, amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(5))
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Amounts due from customers or clients, more than one year from the balance sheet date, for goods or services that have been delivered or sold in the normal course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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