MARKETABLE SECURITIES (Details 2) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013
Fair value of available-for-sale investments in debt securities by contractual maturity
1 year or less	$ 23
1-5 years	2
5-10 years	1
Total	$ 26

Amount of debt securities categorized neither as held-to-maturity nor trading.

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