Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012		Mar. 31, 2011
Consolidated Balance Sheets [Abstract]
Allowance for doubtful accounts	$ 39,279	[1],[2]	$ 13,388	[1],[2]
Ordinary shares, no par value
Ordinary shares, issued	733,979,527		830,745,010
Ordinary shares, outstanding	683,740,173		756,993,938
Treasury stock, shares	50,239,355		73,751,072

[1] Deductions/write-offs amount for fiscal year 2012 includes $3.9 million, which was previously reservedand the underlying accounts receivable balance wasreclassified to non-current assets in fiscal year 2012, which is carried net of its specific reserve.

[2] Included in amounts charged to costs and expenses in fiscal 2012 is an amount of $28.0 million related to a distressed customer. Refer to note 19 "Subsequent Event" for further details.