|
Fair Value Measurements Fair Values And Related Carrying Values of Financial Instruments (Details) (USD $)
In Millions, unless otherwise specified
|
Sep. 30, 2012
|
Dec. 31, 2011
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Accounts receivable, net |
$ 5,437 |
$ 5,793 |
|
Carrying Amount [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Notes receivable, net |
650 |
792 |
| Debt, excluding capital lease obligations |
(10,988) |
(12,136) |
| Accounts payable |
(9,152) |
(8,406) |
| Residual value and credit guarantees |
(3) |
(8) |
| Contingent repurchase commitments |
(5) |
(7) |
|
Fair Value [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Accounts receivable, net |
5,454 |
5,690 |
| Notes receivable, net |
710 |
836 |
| Debt, excluding capital lease obligations |
(13,258) |
(14,099) |
| Accounts payable |
(9,148) |
(8,396) |
| Residual value and credit guarantees |
(2) |
(9) |
| Contingent repurchase commitments |
(7) |
(4) |
|
Level 2 [Member] | Fair Value [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Accounts receivable, net |
5,454 |
|
| Notes receivable, net |
710 |
|
| Debt, excluding capital lease obligations |
(13,189) |
|
| Accounts payable |
(9,148) |
|
|
Level 3 [Member] | Fair Value [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Debt, excluding capital lease obligations |
(69) |
|
| Residual value and credit guarantees |
(2) |
|
| Contingent repurchase commitments |
$ (7) |
|