| **Income Taxes (Narrative) (Details) - USD ($) $ in Millions**                                                                           | 12 Months Ended |         |
|------------------------------------------------------------------------------------------------------------------------------------------|-----------------|---------|
||
| **Income Tax Disclosure [Line Items]**                                                                                                   |            |    |   |   |
| Stock Repurchased and Retired During Period, Value                                                                                       | $ 508           | $ 1,018 | $ 337 |   |
| Tax Benefits Allocated Directly to Contributed Capital                                                                                   | 65              | 83      | 22 |   |
| Gross unrecognized tax benefits                                                                                                          | 389             | 331     | $ 254 | $ 232 |
| Amount of unrecognized tax benefits that would affect the effective tax rate                                                             | 362             |    |   |   |
| The total amount of unrecognized tax benefits that, if recognized, would result in adjustments to deferred tax assets with corresponding | 27              |    |   |   |
| Combined amount of accrued interest and penalties related to uncertain tax positions                                                     | 14              | 15      |   |   |
| Amount of unrecognized tax benefits for which it is reasonably possible that there will be a reduction within the next 12 months         | 50              |    |   |   |
| Unremitted earnings of foreign subsidiaries                                                                                              | 70              | 43      |   |   |
| Deferred Tax Assets, Valuation Allowance                                                                                                 | 114             | $ 114   |   |   |
| Internal Revenue Service (IRS) [Member]                                                                                                  |            |    |   |   |
| **Income Tax Disclosure [Line Items]**                                                                                                   |            |    |   |   |
| Tax credit carry forwards                                                                                                                | 362             |    |   |   |
| Foreign Country [Member]                                                                                                                 |            |    |   |   |
| **Income Tax Disclosure [Line Items]**                                                                                                   |            |    |   |   |
| Undistributed Earnings of Foreign Subsidiaries                                                                                           | 1,845           |    |   |   |
| Tax credit carry forwards                                                                                                                | 7               |    |   |   |
| State [Member]                                                                                                                           |            |    |   |   |
| **Income Tax Disclosure [Line Items]**                                                                                                   |            |    |   |   |
| Net operating Loss Carryforwards                                                                                                         | 871             |    |   |   |
| Net operating loss attributable to various acquired companies                                                                            | 99              |    |   |   |
| Tax credit carry forwards                                                                                                                | $ 96            |    |   |   |

| X                                                                                                                                                                                                                                                                                                                                             |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Deferred Tax Liability State Effect On Unremitted Earnings of Foreign Subsidiaries
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Operating Loss Carry Forwards Attributable To Acquisition
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| - Definition
The total amount of unrecognized tax benefits that, if recognized, would result in adjustments to deferred tax assets with corresponding adjustments to the valuation allowance
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No definition available.
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| - Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.
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| - Definition
The sum of the tax effects of all items occurring during the period that have been charged or credited directly to other comprehensive income or to related components of shareholders' equity.
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| - Definition
Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.
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| - Definition
The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).
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| - Definition
The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.
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| - Definition
Amount of unrecognized tax benefits.
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| - Definition
Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.
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| - Definition
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.
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