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Stockholders' Equity (Schedule of Components of Other Comprehensive Income (Loss), Net) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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| Stockholders' Equity Note [Abstract] | ||||||||||||||
| Unrealized gain (loss) on marketable securities, gross amount | $ 0 | $ 1 | [1] | $ 0 | $ 1 | [2] | ||||||||
| Unrealized gain (loss) on marketable securities, income tax (provision) benefit | 0 | 0 | 0 | 0 | ||||||||||
| Unrealized gain (loss) on marketable securities, net amount | 0 | 1 | 0 | 1 | ||||||||||
| Foreign currency translation, gross amount | (127) | 44 | (142) | 41 | ||||||||||
| Foreign currency translation, income tax (provision) benefit | 3 | (2) | 1 | (4) | ||||||||||
| Foreign currency translation, net amount | (124) | 42 | (141) | 37 | ||||||||||
| Gain (loss) from cash flow hedges, gross amount | (8) | 2 | [3] | (11) | 7 | |||||||||
| Gain (loss) from cash flow hedges, income tax (provision) benefit | 3 | (1) | 0 | (3) | ||||||||||
| Gain (loss) from cash flow hedges, net amount | (5) | 1 | (11) | 4 | ||||||||||
| Pension and postretirement benefits, gross amount | (16) | 0 | (57) | 0 | [4] | |||||||||
| Pension and postretirement benefits, income tax (provision) benefit | 8 | 0 | 23 | 0 | ||||||||||
| Pension and postretirement benefits, net amount | (8) | 0 | (34) | 0 | ||||||||||
| Total other comprehensive income (loss), gross amount | (151) | 47 | (210) | 49 | ||||||||||
| Total other comprehensive income (loss), income tax (provision) benefit | 14 | (3) | 24 | (7) | ||||||||||
| Total other comprehensive income (loss), net of tax | $ (137) | $ 44 | $ (186) | $ 42 | ||||||||||
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