Debt (Schedule Of Short-Term Debt And Current Portion Of Long-Term Debt) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Disclosure [Abstract]
Unsecured debt securities	$ 755us-gaap_UnsecuredDebtCurrent	$ 1,370us-gaap_UnsecuredDebtCurrent
Non-recourse debt and notes	38us-gaap_SecuredDebtCurrent	32us-gaap_SecuredDebtCurrent
Capital Lease Obligations	64us-gaap_CapitalLeaseObligationsCurrent	68us-gaap_CapitalLeaseObligationsCurrent
Other notes	72us-gaap_OtherNotesPayableCurrent	93us-gaap_OtherNotesPayableCurrent
Short-term debt and current portion of long-term debt	$ 929us-gaap_DebtCurrent	$ 1,563us-gaap_DebtCurrent

Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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- Definition

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Carrying value of the current portion of notes payable which were initially due after one year or beyond the normal operating cycle, if longer, and which are not otherwise defined in the taxonomy.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Carrying value as of the balance sheet date of the portion of long-term, collateralized debt obligations due within one year or the operating cycle, if longer. Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

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

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- Definition

Carrying value as of the balance sheet date of the portion of long-term, uncollateralized debt obligations due within one year or the normal operating cycle, if longer.

+ References

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

-Publisher FASB

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