| **Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares** | 3 Months Ended |
|----------------------------------------------------------------------------------|----------------|
||
| **Statement of Stockholders' Equity [Abstract]**                                 |           |   |   |   |   |   |
| Purchase of treasury shares (in shares)                                          | 448,889,000    | 469,604,000 | 147,784,000 | 76,724,000 | 127,297,000 | 27,347,000 |
| Dividends declared (in dollars per share)                                        | $ 0.51         | $ 0.51 | $ 0.51 | $ 0.39 | $ 0.39 | $ 0.39 |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Aggregate dividends declared during the period for each share of common stock outstanding.
+ References
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| X                                                                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of shares that have been repurchased during the period and are being held in treasury.
+ References
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