Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Dec. 31, 2012		Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 114,234		$ 70,927
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	32,418		31,496
Amortization	1,278		1,277
Provisions for losses on advances and guaranteed loans to suppliers	2,834		10,432
Foreign currency remeasurement loss (gain), net	(10,433)		4,812
Equity in net loss (income) of unconsolidated affiliates, net of dividends	(181)		18,769
Gain on fire loss insurance settlement	0		(9,592)
Gain on sale of property in Brazil	0		(11,111)
Restructuring costs	3,687	[1]	10,220	[1]
Charge for European Commission fine in Italy	0	[1]	49,091	[1]
Other, net	13,467		16,289
Changes in operating assets and liabilities, net	44,405		(132,623)
Net cash provided by operating activities	201,709		59,987
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property, plant and equipment	(23,596)		(30,251)
Proceeds from sale of property, plant and equipment	3,363		18,650
Proceeds from fire loss insurance settlement	0		9,933
Other	1,004		0
Net cash used by investing activities	(19,229)		(1,668)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance (repayment) of short-term debt, net	(36,878)		(11,336)
Issuance of long-term obligations	0		100,000
Repayment of long-term obligations	(13,750)		(95,000)
Dividends paid to noncontrolling interests	(1,945)		(94)
Issuance of common stock	493		134
Repurchase of common stock	(5,053)		(4,004)
Dividends paid on convertible perpetual preferred stock	(11,137)		(11,137)
Dividends paid on common stock	(34,334)		(33,320)
Proceeds from termination of interest rate swap agreements	0		13,388
Other	0		3,539
Net cash used by financing activities	(102,604)		(44,908)
Effect of exchange rate changes on cash	(3)		(2,050)
Net increase in cash and cash equivalents	79,873		11,361
Cash and cash equivalents at beginning of year	261,699		141,007
Cash and cash equivalents at end of period	$ 341,572		$ 152,368

[1] Item is not included in segment operating income, but is included in consolidated operating income.