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Stockholders' Equity Accumulated Other Comprehensive Income (Details) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2013
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Sep. 30, 2012
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| Foreign currency translation | $ (114) | $ (107) |
| Noncredit other-than-temporary impairment losses and subsequent changes in fair value related to certain available-for-sale debt securities, net of income taxes | 25 | 29 |
| Net unrealized gains on other available-for-sale securities, net of income taxes | 1,083 | 942 |
| Net unrealized gains on derivative instruments, net of income taxes | 27 | 2 |
| Total accumulated other comprehensive income | 1,021 | 866 |
| Other-than-temporary losses on certain available-for-sale debt securities related to factors other than credit, net of income taxes | $ 2 | $ 7 |
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- Definition
The cumulative after-tax amount of other than temporary impairment (OTTI) losses related to factors other than credit losses, combined with subsequent changes in fair value, for a debt security, categorized as either Available-for-sale or Held-to-maturity, when the entity does not intend to sell the security and it is not more likely than not that the entity will be required to sell the security before recovery of its amortized cost basis. This amount, net of applicable taxes, is the portion attributable to the parent. No definition available.
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- Definition
Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as available-for-sale that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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