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FINANCIAL INSTRUMENTS (Fair Value of Short-Term Investments By Stated Maturity Date Schedule) (Details) (USD $)
In Millions
Jun. 30, 2011
Mar. 31, 2011
Short-term investments $ 503 $ 497 [1]
Short-term Investments [Member]
   
Due in 1 year or less 221 214
Due in 1-2 years 184 156
Due in 2-3 years 95 126
Due in 1 year or less 222 214
Due in 1-2 years 186 157
Due in 2-3 years 95 126
Short-term investments, adjusted cost 500 496
Short-term investments $ 503 $ 497
[1] Derived from audited consolidated financial statements.