Indebtedness (Schedule Of Debt) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Mar. 31, 2012
Debt Instrument [Line Items]
Short-term debt	$ 284,305	$ 388,452
Total long-term debt	2,012,268	1,772,287
Less current portion of long-term debt	(305,342)	(10,385)
Long-term debt, excluding current portion	1,706,926	1,761,902
Total debt	2,296,573	2,160,739
Trade receivables securitization [Member]
Debt Instrument [Line Items]
Total long-term debt	295,000	295,000
Revolving Credit Borrowings US [Member]
Debt Instrument [Line Items]
Total long-term debt	0	0
Revolving Credit Borrowings Multi Currency [Member]
Debt Instrument [Line Items]
Total long-term debt	38,813	43,472
Revolving Credit Borrowings France [Member]
Debt Instrument [Line Items]
Total long-term debt	7,322	6,338
Senior Notes, Net [Member]
Debt Instrument [Line Items]
Total long-term debt	1,452,799	1,205,881
Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	215,446	215,446
Other long-term debt [Member]
Debt Instrument [Line Items]
Total long-term debt	2,888	6,150
Money market loans [Member]
Debt Instrument [Line Items]
Short-term debt	0	0
Commercial paper [Member]
Debt Instrument [Line Items]
Short-term debt	$ 284,305	$ 388,452