Stockholders' Equity (Deficit) (Narrative) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Noncontrolling Interest
Repurchased shares	1.1
Repurchased shares, total cost	$ 150
Israel
Noncontrolling Interest
Noncontrolling interest acquired		49.90%
Payment to acquired noncontrolling interest		$ 151
Turkey
Noncontrolling Interest
Noncontrolling interest acquired		49.90%

Stockholders' Equity, Ownership Percentage by Noncontrolling Owners Prior to Acquisition

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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.

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- Definition

The cash outflow associated with the purchase of noncontrolling interest during the period.

+ References

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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