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Fair Value Measurements and Financial Instruments (Details 4) (USD $)
In Millions, unless otherwise specified
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3 Months Ended |
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Mar. 31, 2014
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Mar. 31, 2015
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Dec. 31, 2014
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Dec. 31, 2013
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| Schedule of Available-for-sale Securities [Line Items] |
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|
|
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| Loss (gain) related to the remeasurement of fixed interest rate and devaluation-protected bonds in Venezuela |
$ 276 |
|
|
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| Bonds Issued By Venezuelan Government [Member] |
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Securities |
441 |
431 |
399 |
685 |
| Other Current Assets [Member] |
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Marketable Securities |
|
250 |
200 |
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| Fair Value, Inputs, Level 1 [Member] | Other Current Assets [Member] | Deposits [Member] |
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
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| Marketable Securities |
|
217 |
|
|
| Fair Value, Inputs, Level 2 [Member] | Bonds Issued By Venezuelan Government [Member] |
|
|
|
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| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
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| Fair Value of U.S. dollar-linked, devaluation-protected bonds |
|
72 |
|
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| Fair Value of fixed interest rate bonds |
|
359 |
|
|
| Fair Value, Inputs, Level 2 [Member] | Other Current Assets [Member] | Bonds Issued By Venezuelan Government [Member] |
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
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| Marketable Securities |
|
33 |
|
|
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Other Assets [Member] | Bonds Issued By Venezuelan Government [Member] |
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Securities |
|
$ 398 |
$ 322 |
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