SHORT-TERM INVESTMENTS: (Tables)
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12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2012
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SHORT-TERM INVESTMENTS: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule of short-term investments | Short-term investments were as follows ($ in millions):
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Summary of activities in short-term investments | The following table summarizes the activity of these investments by category (in millions):
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Schedule of contractual maturities of the Company's available for sale debt securities | At December 31, 2012 and 2011, contractual maturities of the available-for-sale debt securities are as follows (in millions):
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