Indebtedness (Schedule Of Long-Term Debt Maturities) (Details) (USD $)	9 Months Ended
	Dec. 31, 2013
Maturities of Long-term Debt [Abstract]
December 31, 2014	$ 400,376,000	[1]
March 31, 2015	216,000	[1]
March 31, 2016	250,266,000	[1]
March 31, 2017	605,497,000	[1]
March 31, 2018	325,095,000	[1]
Thereafter	525,000,000	[1]
Total maturities of long-term debt	2,106,450,000	[1]
Trade receivables securitization [Member]
Maturities of Long-term Debt [Abstract]
Accounts Receivable Securitization, Expiration Date	December 5, 2016
Senior Notes, Net [Member]
Maturities of Long-term Debt [Abstract]
Unamortized Discounts	$ 1,300,000

[1] Outstanding borrowings under the Securitization Agreement at December 31, 2013 are reflected as maturing at the agreement’s expiration on December 5, 2016.The Senior Notes are reflected in the debt maturity schedule at their maturity values rather than their carrying values, which are net of aggregate discounts of $1.3 million at December 31, 2013.