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Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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| Income Tax Disclosure [Abstract] | ||
| Effective Income Tax Rate Reconciliation, Percent | 32.00% | 28.00% |
| Tax benefit recognized related to CA apportionment rules | $ (76) | |
| Unrecognized Tax Benefits, Period Increase (Decrease) | 47 | |
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate, Period Increase (Decrease) | 45 | |
| Increase (decrease) In Unrecognized Tax Benefits, Penalties On Income Taxes Accrued | $ 2 | $ 2 |
| X | ||||||||||
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- Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The net amount of all increases and decreases in unrecognized tax benefits for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Tax benefit recognized in the period as result of new guidance issued by the State of California regarding apportionment rules for years prior to fiscal 2012. No definition available.
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| X | ||||||||||
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- Definition
Increase/decrease in unrecognized tax benefits penalties on income taxes accrued No definition available.
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| X | ||||||||||
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- Definition
The Increase (Decrease) In the total amount of unrecognized tax benefits that, if regognized, would affect the effective tax rate. No definition available.
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