CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2013
Current assets:
Cash (including cash equivalent investments of $802,784 at September 30, 2013 and $867,112 at March 31, 2013)	$ 920,454	$ 935,675
Marketable securities	757,357	739,198
Accounts receivable, less allowance for doubtful accounts of $2,027 at September 30, 2013 and $2,003 at March 31, 2013	431,344	478,032
Inventories, net	487,793	393,901
Deferred income taxes	274,919	266,455
Other current assets	130,194	134,525
Total current assets	3,002,061	2,947,786
Non-current assets:
Marketable securities and investments	1,423,394	1,349,424
Property, plant and equipment	758,659	739,702
Less: accumulated depreciation	374,238	362,742
Property, plant and equipment, net	384,421	376,960
Goodwill	713,091	713,091
License agreements, product rights and other intangibles, less accumulated amortization of $389,989 at September 30, 2013 and $322,689 at March 31, 2013	2,107,049	2,127,639
Other assets	106,950	114,682
Total assets	7,736,966	7,629,582
Current liabilities:
Accounts payable	66,573	157,349
Accrued expenses and other liabilities	926,492	840,342
Total current liabilities	993,065	997,691
Long-term liabilities:
Income tax liabilities	523,740	567,311
Deferred tax liabilities	264,413	283,245
Other long-term liabilities	39,365	36,080
Total liabilities	1,820,583	1,884,327
Contingencies (Note 11)
Stockholders' equity:
Preferred stock, $1.00 par; shares authorized 1,000; no shares issued or outstanding
Common stock, $.10 par; shares authorized 1,000,000; issued 432,925 shares at September 30, 2013 and 430,385 shares at March 31, 2013	43,293	43,039
Additional paid-in capital	1,888,980	1,799,071
Retained earnings	9,148,609	9,055,344
Accumulated other comprehensive income	672	10,116
Treasury stock, at cost (163,957 shares at September 30, 2013 and 163,886 shares at March 31, 2013)	(5,165,171)	(5,162,315)
Total stockholders' equity	5,916,383	5,745,255
Total liabilities and stockholders' equity	$ 7,736,966	$ 7,629,582