| **Debt - Financial Services Operations (Details) (USD $)**                        |                 |                 |               |                 |             |             | 1 Months Ended |             |               |               |            |            |             |             |             |               |            |            |               |               |               | 1 Months Ended |           |           |            |            |             | 1 Months Ended |             |           |           |             |             |        |
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| **Debt Instrument [Line Items]**                                                  |            |            |          |            |        |        |           |        |          |          |       |       |        |        |        |          |       |       |          |          |          |           |      |      |       |       |        |           |        |      |      |        |        |   |   |   |   |
| Loans Payable to Bank                                                             |            |            |          |            |        |        |           |        |          | $ 372,000,000 |       |       |        |        |        |          |       |       | $ 502,000,000 |          |          |           |      |      |       |       |        | $ 200,000,000  |        |      |      |        |        |   |   |   |   |
| Debt Instrument, Face Amount                                                      |            |            |          |            | 750,000,000 | 500,000,000 |           |        |          |          |       |       | 125,000,000 | 100,000,000 |        |          |       |       |          |          |          |           |      |      |       |       |        |           |        |      |      |        |        |   |   |   |   |
| Long-term Debt                                                                    | 4,771,000,000   |            | 1,866,000,000 | 2,876,000,000   |        |        |           | 994,000,000 | 1,664,000,000 |          | 78,000,000 | 70,000,000 |        |        | 763,000,000 | 1,072,000,000 | 31,000,000 | 70,000,000 |          | 1,100,000,000 | 1,700,000,000 |           |      |      |       |       |        |           |        |      |      | 414,000,000 | 348,000,000 |   |   |   |   |
| Pledged Assets, Other, Not Separately Reported on Statement of Financial Position |            |            | 1,300,000,000 | 1,900,000,000   |        |        |           |        |          |          |       |       |        |        |        |          |       |       |          |          |          |           |      |      |       |       |        |           |        |      |      |        |        |   |   |   |   |
| Line Of Credit Facility Term Length                                               |            |            |          |            |        |        | 5              |        |          |          |       |       |        |        |        |          |       |       |          |          |          |           |      |      |       |       |        |           |        |      |      |        |        |   |   |   |   |
| Debt instrument, percentage of borrowings denominated in countries currency       |            |            |          |            |        |        |           |        |          |          |       |       |        |        |        |          |       |       |          |          |          |           |      |      |       |       |        |           |        |      |      |        |        | 20.00% | 21.00% | 80.00% | 79.00% |
| Line Of Credit Facility Term                                                      |            |            |          |            |        |        |           |        |          |          |       |       |        |        |        |          |       |       |          |          |          | 5 years        |      |      |       |       |        |           |        |      |      |        |        |   |   |   |   |
| Line of Credit Facility, Maximum Borrowing Capacity                               |            |            |          |            |        |        | 840,000,000    |        |          |          |       |       |        |        |        |          |       |       |          |          |          | 95,000,000     |      |      |       |       | 500,000,000 |           | 340,000,000 |      |      |        |        |   |   |   |   |
| Commercial Paper                                                                  |            |            |          |            |        |        |           |        |          |          |       |       |        |        |        |          |       |       |          |          |          |           |      |      |       |       |        |           |        |      |      | 31,000,000  | 70,000,000  |   |   |   |   |
| Debt Instrument, Periodic Payment, Principal                                      |            |            |          |            |        |        |           |        |          |          |       |       |        |        |        |          |       |       |          |          |          |           |      |      |       |       |        |           |        | 4,000,000 | 9,000,000 |        |        |   |   |   |   |
| Debt Instrument, Number Of Installment Payments                                   |            |            |          |            |        |        |           |        |          |          |       |       |        |        |        |          |       |       |          |          |          |           |      |      |       |       |        |           |        | 8         | 11        |        |        |   |   |   |   |
| Secured Debt                                                                      |            |            |          |            |        |        |           |        |          |          |       |       |        |        |        |          |       |       |          |          |          |           | 4,000,000 | 6,000,000 | 74,000,000 | 64,000,000 |        |           |        |      |      |        |        |   |   |   |   |
| Loans Pledged as Collateral                                                       |            |            |          |            |        |        |           |        |          |          |       |       |        |        |        |          |       |       |          |          |          |           |      |      | 86,000,000 | 70,000,000 |        |           |        |      |      |        |        |   |   |   |   |
| Debt, Current                                                                     | 1,205,000,000   | 1,379,000,000   | 1,033,000,000 | 1,280,000,000   |        |        |           |        |          |          |       |       |        |        |        |          |       |       |          |          |          |           |      |      |       |       |        |           |        |      |      |        |        |   |   |   |   |
| Long-term Debt and Capital Lease Obligations                                      | $ 3,566,000,000 | $ 3,477,000,000 | $ 833,000,000 | $ 1,596,000,000 |        |        |           |        |          |          |       |       |        |        |        |          |       |       |          |          |          |           |      |      |       |       |        |           |        |      |      |        |        |   |   |   |   |

| X                                                                                                                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Debt Instrument, Number Of Installment Payments
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| - Definition
Debt instrument, borrowings denominated in pesos percentage
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| - Definition
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Line Of Credit Facility Term Length
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying value as of the balance sheet date of the sum of short-term debt and current maturities of long-term debt and capital lease obligations, which are due within one year (or one business cycle if longer).
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of the required periodic payments applied to principal.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.
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| - Definition
Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The carrying amount, as of the date of the latest financial statement presented, of all assets that are pledged as collateral for the payment of the related debt obligation primarily arising from secured borrowings, repurchase agreements or other current or potential obligations, where the secured party does not have the right by contract or custom to sell or re-pledge the collateral and therefore are not reclassified and separately reported in the statement of financial position.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.
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