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Stock-Based Compensation (Stock-Based Compensation Allocated To Selling, General And Administrative Expenses) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Stock-based compensation allocated to selling, general, and administrative | $ 43 | $ 44 | $ 85 | $ 86 |
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Operating Expense
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Stock-based compensation allocated to selling, general, and administrative | 7 | 5 | 14 | 13 |
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Selling, General and Administrative Expenses
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Stock-based compensation allocated to selling, general, and administrative | $ 36 | $ 39 | $ 71 | $ 73 |