Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Contractual Maturities) (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Vehicle Program Debt Amount Outstanding	$ 9,500
Vehicle backed debt [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Within 1 year	1,476
Between 1 and 2 years	3,155
Between 2 and 3 years	1,210
Between 3 and 4 years	1,688
Between 4 and 5 years	1,438
Thereafter	533
Vehicle Program Debt Amount Outstanding	$ 9,500

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Amount borrowed under the vehicle program as of the balance sheet date.

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No definition available.

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

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