- DefinitionNumber of share options (or share units) exercised during the current period.
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| Name: | us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised | 
| Namespace Prefix: | us-gaap_ | 
| Data Type: | xbrli:sharesItemType | 
| Balance Type: | na | 
| Period Type: | duration |