Income Taxes (Schedule Of Reconciliation Of Beginning And Ending Amount Of Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Income Taxes [Abstract]
Balance, beginning of fiscal year	$ 134,627	$ 129,888
Additions based on tax position related to the current year	25,113	12,443
Additions for tax positions of prior years	25,719	25,572
Reductions for tax positions of prior years	(18,257)	(35,090)
Reductions related to lapse of applicable statute of limitations	(788)	(2,342)
Settlements	(1,386)	(1,187)
Other	1,404	5,343
Balance, end of fiscal year	$ 166,432	$ 134,627