NET INCOME PER SHARE (Schedule Computations of Basic and Diluted Earnings Per Share) (Details) (USD $) In Millions, except Per Share data	3 Months Ended
Jun. 30, 2011	Jun. 30, 2010
NET INCOME PER SHARE
Net income	$ 221	$ 96
Weighted-average common stock outstanding - basic	331	328
Dilutive potential common shares	6	4
Weighted-average common stock outstanding - diluted	337	332
Basic net income per share	$ 0.67	$ 0.29
Diluted net income per share	$ 0.66	$ 0.29

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6519514

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-Name Emerging Issues Task Force (EITF)
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=6518256

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-Name Regulation S-X (SX)
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-Section 03
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Name Regulation S-X (SX)
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-Paragraph 20
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+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References+ Details

- Definition

This element represents the weighted average total number of shares issued throughout the period including the first (beginning balance outstanding) and last (ending balance outstanding) day of the period before considering any reductions (for instance, shares held in treasury) to arrive at the weighted average number of shares outstanding. Weighted average relates to the portion of time within a reporting period that common shares have been issued and outstanding to the total time in that period. Such concept is used in determining the weighted average number of shares outstanding for purposes of calculating earnings per share (basic).

+ References

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+ Details