EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Basic earnings from continuing and discontinued operations per share:
Income from continuing operations	$ 32,288	$ 106,206	$ 329,510	$ 377,461
Loss from discontinued operations	(7,248)	(4,029)	(25,451)	(13,429)
Net income	25,040	102,177	304,059	364,032
Shares used in computation:
Weighted-average ordinary shares outstanding	658,925,000	710,324,000	666,852,000	726,432,000
Basic earnings from continuing operations per share (in dollars per share)	$ 0.05	$ 0.15	$ 0.49	$ 0.52
Basic loss from discontinued operations per share (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.04)	$ (0.02)
Basic earnings per share	$ 0.04	$ 0.14	$ 0.46	$ 0.50
Diluted earnings from continuing and discontinued operations per share:
Income from continuing operations	32,288	106,206	329,510	377,461
Loss from discontinued operations	(7,248)	(4,029)	(25,451)	(13,429)
Net income	$ 25,040	$ 102,177	$ 304,059	$ 364,032
Shares used in computation:
Weighted-average ordinary shares outstanding	658,925,000	710,324,000	666,852,000	726,432,000
Weighted-average ordinary shares outstanding equivalents from stock options and awards	10,563,000	10,570,000	11,758,000	10,823,000
Weighted-average ordinary shares and ordinary share equivalents outstanding	669,488,000	720,894,000	678,610,000	737,255,000
Diluted earnings from continuing operations per share (in dollars per share)	$ 0.05	$ 0.15	$ 0.49	$ 0.51
Diluted loss from discontinued operations per share (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.04)	$ (0.02)
Diluted earnings per share	$ 0.04	$ 0.14	$ 0.45	$ 0.49
Ordinary share equivalents from share options excluded from the computation of diluted earnings per share	19,700,000	24,800,000	21,000,000	26,200,000